[info] Using makefile-style concurrent boot in runlevel 2. [ 51.092308][ T26] audit: type=1800 audit(1568260717.367:21): pid=8984 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 51.139399][ T26] audit: type=1800 audit(1568260717.367:22): pid=8984 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.234' (ECDSA) to the list of known hosts. syzkaller login: [ 156.836903][ T9136] IPVS: ftp: loaded support on port[0] = 21 [ 156.874310][ T9136] chnl_net:caif_netlink_parms(): no params data found [ 156.893445][ T9136] bridge0: port 1(bridge_slave_0) entered blocking state [ 156.900788][ T9136] bridge0: port 1(bridge_slave_0) entered disabled state [ 156.908560][ T9136] device bridge_slave_0 entered promiscuous mode [ 156.915739][ T9136] bridge0: port 2(bridge_slave_1) entered blocking state [ 156.922797][ T9136] bridge0: port 2(bridge_slave_1) entered disabled state [ 156.930284][ T9136] device bridge_slave_1 entered promiscuous mode [ 156.942070][ T9136] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 156.952196][ T9136] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 156.966702][ T9136] team0: Port device team_slave_0 added [ 156.972958][ T9136] team0: Port device team_slave_1 added [ 157.026920][ T9136] device hsr_slave_0 entered promiscuous mode [ 157.065929][ T9136] device hsr_slave_1 entered promiscuous mode [ 157.110506][ T9136] bridge0: port 2(bridge_slave_1) entered blocking state [ 157.117719][ T9136] bridge0: port 2(bridge_slave_1) entered forwarding state [ 157.124977][ T9136] bridge0: port 1(bridge_slave_0) entered blocking state [ 157.132045][ T9136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 157.153051][ T9136] 8021q: adding VLAN 0 to HW filter on device bond0 [ 157.162354][ T2621] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 157.181040][ T2621] bridge0: port 1(bridge_slave_0) entered disabled state [ 157.188927][ T2621] bridge0: port 2(bridge_slave_1) entered disabled state [ 157.196917][ T2621] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 157.206306][ T9136] 8021q: adding VLAN 0 to HW filter on device team0 [ 157.216066][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 157.224278][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 157.231338][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 157.238980][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 157.247399][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 157.254414][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 157.269927][ T9136] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 157.280495][ T9136] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 157.293012][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 157.301430][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 157.310244][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 157.318355][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 157.326449][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 157.333878][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 157.346965][ T9136] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 262.475465][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 262.482131][ C0] rcu: 0-...!: (1 GPs behind) idle=0ea/1/0x4000000000000002 softirq=8787/8788 fqs=18 [ 262.491735][ C0] (t=10501 jiffies g=6657 q=46) [ 262.497522][ C0] rcu: rcu_preempt kthread starved for 10466 jiffies! g6657 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 262.508772][ C0] rcu: RCU grace-period kthread stack dump: [ 262.514679][ C0] rcu_preempt I28896 10 2 0x80004000 [ 262.521010][ C0] Call Trace: [ 262.524399][ C0] __schedule+0x877/0xc50 [ 262.528709][ C0] schedule+0x131/0x1e0 [ 262.532837][ C0] schedule_timeout+0x14f/0x240 [ 262.537747][ C0] ? run_local_timers+0x120/0x120 [ 262.542791][ C0] rcu_gp_kthread+0xef8/0x1790 [ 262.547556][ C0] kthread+0x332/0x350 [ 262.551598][ C0] ? rcu_report_qs_rsp+0x150/0x150 [ 262.556683][ C0] ? kthread_blkcg+0xe0/0xe0 [ 262.561272][ C0] ret_from_fork+0x24/0x30 [ 262.565688][ C0] NMI backtrace for cpu 0 [ 262.570022][ C0] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.3.0-rc8+ #0 [ 262.577358][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 262.587467][ C0] Workqueue: ipv6_addrconf addrconf_dad_work [ 262.593417][ C0] Call Trace: [ 262.596679][ C0] [ 262.599542][ C0] dump_stack+0x1d8/0x2f8 [ 262.603857][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 262.608689][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 262.614869][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 262.620911][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 262.626864][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 262.632744][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 262.637830][ C0] rcu_sched_clock_irq+0xb95/0x16d0 [ 262.643096][ C0] ? trace_hardirqs_off+0x74/0x80 [ 262.648099][ C0] update_process_times+0x134/0x190 [ 262.653295][ C0] tick_sched_timer+0x263/0x420 [ 262.658124][ C0] ? tick_setup_sched_timer+0x2c0/0x2c0 [ 262.663655][ C0] __hrtimer_run_queues+0x403/0x850 [ 262.668844][ C0] hrtimer_interrupt+0x38c/0xda0 [ 262.673762][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 262.679292][ C0] apic_timer_interrupt+0xf/0x20 [ 262.684259][ C0] RIP: 0010:__list_add_valid+0x4e/0xc0 [ 262.689693][ C0] Code: 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 26 c5 58 fe 48 8b 13 4c 39 e2 75 4f 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 <74> 08 4c 89 e7 e8 08 c5 58 fe 49 8b 14 24 4c 39 f2 75 46 4d 39 e7 [ 262.709283][ C0] RSP: 0018:ffff8880aea08fc0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 262.717678][ C0] RAX: 1ffff11011e7c872 RBX: ffff88808f3e4398 RCX: ffff8880a98a4300 [ 262.725624][ C0] RDX: ffff88808f3e4390 RSI: ffff88808f3e4390 RDI: ffff88808f3e42f8 [ 262.733578][ C0] RBP: ffff8880aea08fe8 R08: ffffffff860c5d6a R09: 0000000000000000 [ 262.741539][ C0] R10: fffffbfff117be8d R11: 0000000000000000 R12: ffff88808f3e4390 [ 262.749498][ C0] R13: dffffc0000000000 R14: ffff88808f3e4390 R15: ffff88808f3e42f8 [ 262.757483][ C0] ? apic_timer_interrupt+0xa/0x20 [ 262.762659][ C0] ? hhf_dequeue+0x15a/0xaa0 [ 262.767255][ C0] hhf_dequeue+0x535/0xaa0 [ 262.771649][ C0] ? hhf_enqueue+0x19dc/0x2110 [ 262.776426][ C0] __qdisc_run+0x217/0x1b30 [ 262.780937][ C0] ? dev_queue_xmit+0x17/0x20 [ 262.785589][ C0] __dev_queue_xmit+0x1161/0x3020 [ 262.790585][ C0] ? _raw_spin_unlock_irqrestore+0xbc/0xe0 [ 262.796378][ C0] dev_queue_xmit+0x17/0x20 [ 262.800889][ C0] br_dev_queue_push_xmit+0x551/0x650 [ 262.806254][ C0] br_nf_dev_queue_xmit+0x312/0x1590 [ 262.811537][ C0] br_nf_post_routing+0xa5f/0xea0 [ 262.816540][ C0] ? br_nf_forward_arp+0xab0/0xab0 [ 262.821644][ C0] nf_hook_slow+0xc8/0x210 [ 262.826039][ C0] nf_hook+0x23a/0x310 [ 262.830082][ C0] ? fdb_add_hw_addr+0x220/0x220 [ 262.834999][ C0] br_forward_finish+0x7a/0xc0 [ 262.839744][ C0] ? fdb_add_hw_addr+0x220/0x220 [ 262.844658][ C0] br_nf_forward_finish+0x8f4/0xc80 [ 262.849845][ C0] ? rcu_lock_release+0x26/0x30 [ 262.854675][ C0] ? br_dev_queue_push_xmit+0x650/0x650 [ 262.860202][ C0] br_nf_forward_ip+0xed4/0x13f0 [ 262.865117][ C0] ? br_nf_pre_routing+0x1380/0x1380 [ 262.870380][ C0] nf_hook_slow+0xc8/0x210 [ 262.874896][ C0] nf_hook+0x23a/0x310 [ 262.878960][ C0] ? br_dev_queue_push_xmit+0x650/0x650 [ 262.884488][ C0] __br_forward+0x39e/0x720 [ 262.888989][ C0] ? br_dev_queue_push_xmit+0x650/0x650 [ 262.894530][ C0] br_flood+0x7af/0x840 [ 262.898671][ C0] br_handle_frame_finish+0xf37/0x1370 [ 262.904120][ C0] ? nf_hook_slow+0x17d/0x210 [ 262.908774][ C0] br_nf_hook_thresh+0x306/0x390 [ 262.913694][ C0] ? brport_get_ownership+0x80/0x80 [ 262.918864][ C0] br_nf_pre_routing_finish_ipv6+0x8ac/0xb30 [ 262.924826][ C0] ? brport_get_ownership+0x80/0x80 [ 262.930003][ C0] br_nf_pre_routing_ipv6+0x2ab/0x350 [ 262.935347][ C0] br_nf_pre_routing+0x6ca/0x1380 [ 262.940351][ C0] ? brnf_device_event+0x1f0/0x1f0 [ 262.945446][ C0] br_handle_frame+0x7d9/0xeb0 [ 262.950258][ C0] ? trace_pelt_se_tp+0x160/0x1d0 [ 262.955265][ C0] ? brport_get_ownership+0x80/0x80 [ 262.960444][ C0] ? br_pass_frame_up+0x4c0/0x4c0 [ 262.965480][ C0] __netif_receive_skb_core+0x1a7d/0x3470 [ 262.971180][ C0] __netif_receive_skb+0xc5/0x370 [ 262.976180][ C0] process_backlog+0x4d8/0x910 [ 262.980920][ C0] net_rx_action+0x5ef/0xfd0 [ 262.985838][ C0] __do_softirq+0x333/0x7c4 [ 262.990326][ C0] ? do_softirq_own_stack+0x2a/0x40 [ 262.995499][ C0] do_softirq_own_stack+0x2a/0x40 [ 263.000501][ C0] [ 263.003993][ C0] do_softirq+0xfd/0x190 [ 263.008225][ C0] ? local_bh_enable+0x9/0x30 [ 263.012875][ C0] __local_bh_enable_ip+0x194/0x240 [ 263.018047][ C0] local_bh_enable+0x1f/0x30 [ 263.022619][ C0] ip6_finish_output2+0x109f/0x13d0 [ 263.027795][ C0] __ip6_finish_output+0x693/0x910 [ 263.032880][ C0] ip6_finish_output+0x52/0x1e0 [ 263.037703][ C0] ? ip6_output+0x25a/0x390 [ 263.042203][ C0] ip6_output+0x26f/0x390 [ 263.046581][ C0] ndisc_send_skb+0xa35/0xe40 [ 263.051248][ C0] ndisc_send_ns+0x5ce/0x7b0 [ 263.055823][ C0] addrconf_dad_work+0xe40/0x1c20 [ 263.060838][ C0] process_one_work+0x7ef/0x10e0 [ 263.065757][ C0] worker_thread+0xc01/0x1630 [ 263.070415][ C0] kthread+0x332/0x350 [ 263.074455][ C0] ? rcu_lock_release+0x30/0x30 [ 263.079279][ C0] ? kthread_blkcg+0xe0/0xe0 [ 263.083842][ C0] ret_from_fork+0x24/0x30