[info] Using makefile-style concurrent boot in runlevel 2. [ 51.313262][ T26] audit: type=1800 audit(1568325650.892:21): pid=8986 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 51.360324][ T26] audit: type=1800 audit(1568325650.892:22): pid=8986 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 '10.128.0.206' (ECDSA) to the list of known hosts. syzkaller login: [ 242.360032][ T9136] IPVS: ftp: loaded support on port[0] = 21 [ 242.397338][ T9136] chnl_net:caif_netlink_parms(): no params data found [ 242.417621][ T9136] bridge0: port 1(bridge_slave_0) entered blocking state [ 242.424793][ T9136] bridge0: port 1(bridge_slave_0) entered disabled state [ 242.432454][ T9136] device bridge_slave_0 entered promiscuous mode [ 242.439745][ T9136] bridge0: port 2(bridge_slave_1) entered blocking state [ 242.446804][ T9136] bridge0: port 2(bridge_slave_1) entered disabled state [ 242.454304][ T9136] device bridge_slave_1 entered promiscuous mode [ 242.466025][ T9136] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 242.476257][ T9136] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 242.490961][ T9136] team0: Port device team_slave_0 added [ 242.497197][ T9136] team0: Port device team_slave_1 added [ 242.579184][ T9136] device hsr_slave_0 entered promiscuous mode [ 242.618089][ T9136] device hsr_slave_1 entered promiscuous mode [ 242.702238][ T9136] bridge0: port 2(bridge_slave_1) entered blocking state [ 242.709326][ T9136] bridge0: port 2(bridge_slave_1) entered forwarding state [ 242.716614][ T9136] bridge0: port 1(bridge_slave_0) entered blocking state [ 242.723684][ T9136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 242.744588][ T9136] 8021q: adding VLAN 0 to HW filter on device bond0 [ 242.753764][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 242.772664][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 242.780365][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 242.787783][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 242.797455][ T9136] 8021q: adding VLAN 0 to HW filter on device team0 [ 242.806076][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 242.814391][ T22] bridge0: port 1(bridge_slave_0) entered blocking state [ 242.821472][ T22] bridge0: port 1(bridge_slave_0) entered forwarding state [ 242.830833][ T3618] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 242.839240][ T3618] bridge0: port 2(bridge_slave_1) entered blocking state [ 242.846250][ T3618] bridge0: port 2(bridge_slave_1) entered forwarding state [ 242.861390][ T9136] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 242.872350][ T9136] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 242.884112][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 242.892552][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 242.900734][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 242.908792][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 242.916823][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 242.924270][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 242.937338][ T9136] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 347.967851][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 347.974622][ C1] rcu: 1-...!: (10499 ticks this GP) idle=8f2/1/0x4000000000000002 softirq=8966/8966 fqs=7 [ 347.984918][ C1] (t=10501 jiffies g=6633 q=89) [ 347.989876][ C1] rcu: rcu_preempt kthread starved for 10488 jiffies! g6633 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 348.001128][ C1] rcu: RCU grace-period kthread stack dump: [ 348.007092][ C1] rcu_preempt I29128 10 2 0x80004000 [ 348.013411][ C1] Call Trace: [ 348.016817][ C1] __schedule+0x877/0xc50 [ 348.021136][ C1] schedule+0x131/0x1e0 [ 348.025281][ C1] schedule_timeout+0x14f/0x240 [ 348.030170][ C1] ? run_local_timers+0x120/0x120 [ 348.035200][ C1] rcu_gp_kthread+0xef8/0x1790 [ 348.040092][ C1] kthread+0x332/0x350 [ 348.044146][ C1] ? rcu_report_qs_rsp+0x150/0x150 [ 348.049239][ C1] ? kthread_blkcg+0xe0/0xe0 [ 348.053852][ C1] ret_from_fork+0x24/0x30 [ 348.058284][ C1] NMI backtrace for cpu 1 [ 348.062632][ C1] CPU: 1 PID: 22 Comm: kworker/1:1 Not tainted 5.3.0-rc8+ #0 [ 348.069980][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 348.080080][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 348.086040][ C1] Call Trace: [ 348.089345][ C1] [ 348.092255][ C1] dump_stack+0x1d8/0x2f8 [ 348.096573][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 348.101405][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 348.107623][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 348.113706][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 348.119706][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 348.125582][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 348.130691][ C1] rcu_sched_clock_irq+0xb95/0x16d0 [ 348.135905][ C1] ? trace_hardirqs_off+0x74/0x80 [ 348.141000][ C1] update_process_times+0x134/0x190 [ 348.146219][ C1] tick_sched_timer+0x263/0x420 [ 348.151095][ C1] ? tick_setup_sched_timer+0x2c0/0x2c0 [ 348.156622][ C1] __hrtimer_run_queues+0x403/0x850 [ 348.161807][ C1] hrtimer_interrupt+0x38c/0xda0 [ 348.166768][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 348.172333][ C1] apic_timer_interrupt+0xf/0x20 [ 348.177302][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 [ 348.183474][ C1] Code: 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d 54 69 4a 07 48 89 de e8 84 89 38 00 5b 5d c3 90 <48> 8b 04 24 65 48 8b 0c 25 c0 fd 01 00 65 8b 15 98 70 8e 7e f7 c2 [ 348.203182][ C1] RSP: 0018:ffff8880aeb08ff0 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 [ 348.211574][ C1] RAX: ffff8880a9a345c0 RBX: 0000000000000000 RCX: 0000000000000302 [ 348.219616][ C1] RDX: 0000000000000302 RSI: 0000000000000000 RDI: 0000000000000001 [ 348.227725][ C1] RBP: ffff8880aeb090a0 R08: ffffffff860c5d6a R09: 0000000000000000 [ 348.235691][ C1] R10: fffffbfff117be8d R11: 0000000000000000 R12: dffffc0000000000 [ 348.243657][ C1] R13: ffff888098641b40 R14: ffff888098641e28 R15: ffff888098641ed0 [ 348.251632][ C1] ? apic_timer_interrupt+0xa/0x20 [ 348.256815][ C1] ? hhf_dequeue+0x15a/0xaa0 [ 348.261481][ C1] ? hhf_dequeue+0x282/0xaa0 [ 348.266057][ C1] ? hhf_enqueue+0x19dc/0x2110 [ 348.270919][ C1] __qdisc_run+0x217/0x1b30 [ 348.275578][ C1] ? dev_queue_xmit+0x17/0x20 [ 348.280250][ C1] __dev_queue_xmit+0x1161/0x3020 [ 348.285254][ C1] ? _raw_spin_unlock_irqrestore+0xbc/0xe0 [ 348.291050][ C1] dev_queue_xmit+0x17/0x20 [ 348.295642][ C1] br_dev_queue_push_xmit+0x551/0x650 [ 348.301021][ C1] br_nf_dev_queue_xmit+0x312/0x1590 [ 348.306313][ C1] br_nf_post_routing+0xa5f/0xea0 [ 348.311323][ C1] ? br_nf_forward_arp+0xab0/0xab0 [ 348.316476][ C1] nf_hook_slow+0xc8/0x210 [ 348.320875][ C1] nf_hook+0x23a/0x310 [ 348.324930][ C1] ? fdb_add_hw_addr+0x220/0x220 [ 348.329856][ C1] br_forward_finish+0x7a/0xc0 [ 348.334607][ C1] ? fdb_add_hw_addr+0x220/0x220 [ 348.339531][ C1] br_nf_forward_finish+0x8f4/0xc80 [ 348.344712][ C1] ? rcu_lock_release+0x26/0x30 [ 348.349547][ C1] ? br_dev_queue_push_xmit+0x650/0x650 [ 348.355232][ C1] br_nf_forward_ip+0xed4/0x13f0 [ 348.360247][ C1] ? br_nf_pre_routing+0x1380/0x1380 [ 348.365526][ C1] nf_hook_slow+0xc8/0x210 [ 348.369927][ C1] nf_hook+0x23a/0x310 [ 348.373982][ C1] ? br_dev_queue_push_xmit+0x650/0x650 [ 348.379540][ C1] __br_forward+0x39e/0x720 [ 348.384023][ C1] ? br_dev_queue_push_xmit+0x650/0x650 [ 348.389586][ C1] br_flood+0x7af/0x840 [ 348.393729][ C1] br_handle_frame_finish+0xf37/0x1370 [ 348.399168][ C1] ? nf_hook_slow+0x17d/0x210 [ 348.403832][ C1] br_nf_hook_thresh+0x306/0x390 [ 348.408751][ C1] ? brport_get_ownership+0x80/0x80 [ 348.413930][ C1] br_nf_pre_routing_finish_ipv6+0x8ac/0xb30 [ 348.419894][ C1] ? brport_get_ownership+0x80/0x80 [ 348.425076][ C1] br_nf_pre_routing_ipv6+0x2ab/0x350 [ 348.430429][ C1] br_nf_pre_routing+0x6ca/0x1380 [ 348.435436][ C1] ? brnf_device_event+0x1f0/0x1f0 [ 348.440532][ C1] br_handle_frame+0x7d9/0xeb0 [ 348.445334][ C1] ? file_free_rcu+0xa0/0xd0 [ 348.449908][ C1] ? rcu_core+0x892/0xf10 [ 348.454220][ C1] ? brport_get_ownership+0x80/0x80 [ 348.459399][ C1] ? br_pass_frame_up+0x4c0/0x4c0 [ 348.464535][ C1] __netif_receive_skb_core+0x1a7d/0x3470 [ 348.470273][ C1] ? debug_check_no_obj_freed+0x505/0x5b0 [ 348.475983][ C1] __netif_receive_skb+0xc5/0x370 [ 348.480992][ C1] process_backlog+0x4d8/0x910 [ 348.485745][ C1] net_rx_action+0x5ef/0xfd0 [ 348.490323][ C1] __do_softirq+0x333/0x7c4 [ 348.494809][ C1] ? do_softirq_own_stack+0x2a/0x40 [ 348.499992][ C1] do_softirq_own_stack+0x2a/0x40 [ 348.504998][ C1] [ 348.508000][ C1] do_softirq+0xfd/0x190 [ 348.512229][ C1] ? local_bh_enable+0x9/0x30 [ 348.516889][ C1] __local_bh_enable_ip+0x194/0x240 [ 348.522070][ C1] local_bh_enable+0x1f/0x30 [ 348.526639][ C1] ip6_finish_output2+0x109f/0x13d0 [ 348.531864][ C1] __ip6_finish_output+0x693/0x910 [ 348.536960][ C1] ip6_finish_output+0x52/0x1e0 [ 348.541829][ C1] ? ip6_output+0x25a/0x390 [ 348.546315][ C1] ip6_output+0x26f/0x390 [ 348.550706][ C1] ndisc_send_skb+0xa35/0xe40 [ 348.555371][ C1] ndisc_send_ns+0x5ce/0x7b0 [ 348.559954][ C1] addrconf_dad_work+0xe40/0x1c20 [ 348.564965][ C1] process_one_work+0x7ef/0x10e0 [ 348.569921][ C1] worker_thread+0xc01/0x1630 [ 348.574617][ C1] kthread+0x332/0x350 [ 348.578679][ C1] ? rcu_lock_release+0x30/0x30 [ 348.583525][ C1] ? kthread_blkcg+0xe0/0xe0 [ 348.588141][ C1] ret_from_fork+0x24/0x30