[ 51.465275][ T26] audit: type=1800 audit(1568306978.637:21): pid=9068 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 51.489072][ T26] audit: type=1800 audit(1568306978.637:22): pid=9068 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[ 51.953123][ T9091] rsyslogd (9091) used greatest stack depth: 24584 bytes left [?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 '10.128.0.104' (ECDSA) to the list of known hosts. syzkaller login: [ 341.165914][ T9218] IPVS: ftp: loaded support on port[0] = 21 [ 341.205355][ T9218] chnl_net:caif_netlink_parms(): no params data found [ 341.224121][ T9218] bridge0: port 1(bridge_slave_0) entered blocking state [ 341.231467][ T9218] bridge0: port 1(bridge_slave_0) entered disabled state [ 341.238922][ T9218] device bridge_slave_0 entered promiscuous mode [ 341.246068][ T9218] bridge0: port 2(bridge_slave_1) entered blocking state [ 341.253164][ T9218] bridge0: port 2(bridge_slave_1) entered disabled state [ 341.260566][ T9218] device bridge_slave_1 entered promiscuous mode [ 341.272795][ T9218] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 341.283413][ T9218] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 341.298017][ T9218] team0: Port device team_slave_0 added [ 341.304590][ T9218] team0: Port device team_slave_1 added [ 341.370503][ T9218] device hsr_slave_0 entered promiscuous mode [ 341.409520][ T9218] device hsr_slave_1 entered promiscuous mode [ 341.473349][ T9218] bridge0: port 2(bridge_slave_1) entered blocking state [ 341.480459][ T9218] bridge0: port 2(bridge_slave_1) entered forwarding state [ 341.487744][ T9218] bridge0: port 1(bridge_slave_0) entered blocking state [ 341.494827][ T9218] bridge0: port 1(bridge_slave_0) entered forwarding state [ 341.514952][ T9218] 8021q: adding VLAN 0 to HW filter on device bond0 [ 341.525342][ T9220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 341.543529][ T9220] bridge0: port 1(bridge_slave_0) entered disabled state [ 341.551138][ T9220] bridge0: port 2(bridge_slave_1) entered disabled state [ 341.558566][ T9220] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 341.568000][ T9218] 8021q: adding VLAN 0 to HW filter on device team0 [ 341.576924][ T3636] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 341.585396][ T3636] bridge0: port 1(bridge_slave_0) entered blocking state [ 341.592462][ T3636] bridge0: port 1(bridge_slave_0) entered forwarding state [ 341.608758][ T9218] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 341.619531][ T9218] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 341.631002][ T2829] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 341.639642][ T2829] bridge0: port 2(bridge_slave_1) entered blocking state [ 341.646716][ T2829] bridge0: port 2(bridge_slave_1) entered forwarding state [ 341.655093][ T2829] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 341.663633][ T2829] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready executing program [ 341.671813][ T2829] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 341.680010][ T2829] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 341.688008][ T2829] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 341.695535][ T2829] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 341.707419][ T9218] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 446.729018][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 446.735885][ C0] rcu: 0-...!: (10500 ticks this GP) idle=a72/0/0x3 softirq=7648/7648 fqs=0 [ 446.744719][ C0] (t=10501 jiffies g=7041 q=155) [ 446.749737][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g7041 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 446.761112][ C0] rcu: RCU grace-period kthread stack dump: [ 446.767414][ C0] rcu_preempt I29080 10 2 0x80004000 [ 446.773781][ C0] Call Trace: [ 446.777435][ C0] __schedule+0x877/0xc50 [ 446.781763][ C0] schedule+0x131/0x1e0 [ 446.786070][ C0] schedule_timeout+0x14f/0x240 [ 446.791039][ C0] ? run_local_timers+0x120/0x120 [ 446.796078][ C0] rcu_gp_kthread+0xef8/0x1790 [ 446.800948][ C0] kthread+0x332/0x350 [ 446.805007][ C0] ? rcu_report_qs_rsp+0x150/0x150 [ 446.810220][ C0] ? kthread_blkcg+0xe0/0xe0 [ 446.815255][ C0] ret_from_fork+0x24/0x30 [ 446.819832][ C0] NMI backtrace for cpu 0 [ 446.824197][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc8+ #0 [ 446.831999][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 446.842210][ C0] Call Trace: [ 446.845491][ C0] [ 446.848422][ C0] dump_stack+0x1d8/0x2f8 [ 446.852933][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 446.857774][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 446.864405][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 446.870644][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 446.876627][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 446.882508][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 446.887678][ C0] rcu_sched_clock_irq+0xb95/0x16d0 [ 446.892927][ C0] ? trace_hardirqs_off+0x74/0x80 [ 446.897941][ C0] update_process_times+0x134/0x190 [ 446.903166][ C0] tick_sched_timer+0x263/0x420 [ 446.908118][ C0] ? tick_setup_sched_timer+0x2c0/0x2c0 [ 446.913706][ C0] __hrtimer_run_queues+0x403/0x850 [ 446.918900][ C0] hrtimer_interrupt+0x38c/0xda0 [ 446.923836][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 446.929515][ C0] apic_timer_interrupt+0xf/0x20 [ 446.934608][ C0] RIP: 0010:hhf_dequeue+0x4c8/0xaa0 [ 446.939798][ C0] Code: 20 00 4c 8b 7d a0 74 05 e8 b5 27 a0 fb 4c 8b 73 08 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 9b 27 a0 fb 48 8b 1b <48> 8d 7b 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 21 28 a0 [ 446.959668][ C0] RSP: 0018:ffff8880aea096a8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 446.968434][ C0] RAX: 1ffff110142a2337 RBX: ffff8880a1511a50 RCX: ffffffff88875a00 [ 446.976482][ C0] RDX: 0000000000000502 RSI: 0000000000000000 RDI: ffff8880a15119c0 [ 446.984447][ C0] RBP: ffff8880aea09750 R08: ffffffff860c5d6a R09: 0000000000000000 [ 446.992808][ C0] R10: fffffbfff117be8d R11: 0000000000000000 R12: dffffc0000000000 [ 447.000777][ C0] R13: ffff8880a15116c0 R14: ffff8880a1511a50 R15: ffff8880a1511a40 [ 447.008946][ C0] ? apic_timer_interrupt+0xa/0x20 [ 447.014061][ C0] ? hhf_dequeue+0x15a/0xaa0 [ 447.018901][ C0] ? hhf_dequeue+0x490/0xaa0 [ 447.023542][ C0] ? hhf_enqueue+0x19dc/0x2110 [ 447.028574][ C0] __qdisc_run+0x217/0x1b30 [ 447.033116][ C0] ? dev_queue_xmit+0x17/0x20 [ 447.038046][ C0] __dev_queue_xmit+0x1161/0x3020 [ 447.043123][ C0] dev_queue_xmit+0x17/0x20 [ 447.048119][ C0] neigh_resolve_output+0x60c/0x6b0 [ 447.053551][ C0] ip6_finish_output2+0x102c/0x13d0 [ 447.058895][ C0] __ip6_finish_output+0x693/0x910 [ 447.064013][ C0] ip6_finish_output+0x52/0x1e0 [ 447.069233][ C0] ? ip6_output+0x25a/0x390 [ 447.073730][ C0] ip6_output+0x26f/0x390 [ 447.078241][ C0] mld_sendpack+0x770/0xb90 [ 447.082752][ C0] mld_ifc_timer_expire+0x820/0xb70 [ 447.088126][ C0] ? mld_gq_timer_expire+0x80/0x80 [ 447.093239][ C0] call_timer_fn+0x95/0x170 [ 447.097735][ C0] ? mld_gq_timer_expire+0x80/0x80 [ 447.102924][ C0] __run_timers+0x79e/0x970 [ 447.107470][ C0] ? check_preemption_disabled+0x47/0x2a0 [ 447.113269][ C0] ? check_preemption_disabled+0x47/0x2a0 [ 447.118988][ C0] run_timer_softirq+0x4a/0x90 [ 447.123784][ C0] __do_softirq+0x333/0x7c4 [ 447.128414][ C0] ? irq_exit+0x227/0x230 [ 447.133222][ C0] irq_exit+0x227/0x230 [ 447.137410][ C0] smp_apic_timer_interrupt+0x113/0x280 [ 447.143070][ C0] apic_timer_interrupt+0xf/0x20 [ 447.148031][ C0] [ 447.150948][ C0] RIP: 0010:native_safe_halt+0xe/0x10 [ 447.156313][ C0] Code: 30 fa eb ae 89 d9 80 e1 07 80 c1 03 38 c1 7c ba 48 89 df e8 54 a1 30 fa eb b0 90 90 e9 07 00 00 00 0f 00 2d 96 a0 46 00 fb f4 90 e9 07 00 00 00 0f 00 2d 86 a0 46 00 f4 c3 90 90 55 48 89 e5 [ 447.176262][ C0] RSP: 0018:ffffffff88807dc0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 447.185312][ C0] RAX: 1ffffffff11150f3 RBX: ffffffff88875a00 RCX: dffffc0000000000 [ 447.193429][ C0] RDX: 0000000000000000 RSI: ffffffff812b7a1a RDI: ffffffff877be46a [ 447.201481][ C0] RBP: ffffffff88807dc8 R08: ffffffff81790e54 R09: fffffbfff110eb41 [ 447.209490][ C0] R10: fffffbfff110eb41 R11: 0000000000000000 R12: dffffc0000000000 [ 447.218028][ C0] R13: 1ffffffff110eb40 R14: dffffc0000000000 R15: 0000000000000000 [ 447.226837][ C0] ? trace_hardirqs_on+0x34/0x80 [ 447.232595][ C0] ? arch_cpu_idle+0xa/0x10 [ 447.237211][ C0] ? default_idle+0x1a/0x70 [ 447.241710][ C0] ? default_idle+0x50/0x70 [ 447.246268][ C0] arch_cpu_idle+0xa/0x10 [ 447.250595][ C0] default_idle_call+0x59/0xa0 [ 447.255750][ C0] do_idle+0x140/0x6d0 [ 447.259956][ C0] ? debug_smp_processor_id+0x1c/0x20 [ 447.265875][ C0] cpu_startup_entry+0x25/0x30 [ 447.270847][ C0] rest_init+0x29d/0x2b0 [ 447.275202][ C0] arch_call_rest_init+0xe/0x10 [ 447.280047][ C0] start_kernel+0x6f5/0x7f6 [ 447.284774][ C0] x86_64_start_reservations+0x18/0x2e [ 447.290302][ C0] x86_64_start_kernel+0x7a/0x7d [ 447.295412][ C0] secondary_startup_64+0xa4/0xb0 [ 447.300440][ C0] Sending NMI from CPU 0 to CPUs 1: [ 447.306454][ C1] NMI backtrace for cpu 1 [ 447.306458][ C1] CPU: 1 PID: 9222 Comm: kworker/1:0 Not tainted 5.3.0-rc8+ #0 [ 447.306462][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 447.306464][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 447.306468][ C1] RIP: 0010:native_queued_spin_lock_slowpath+0x92/0x9e0 [ 447.306475][ C1] Code: 84 c0 74 54 44 89 f9 80 e1 07 80 c1 03 38 c1 7c 47 4c 89 ff e8 7f f4 51 00 eb 3d 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 f3 90 <4c> 89 ff be 04 00 00 00 e8 91 c5 51 00 42 0f b6 04 2b 84 c0 74 18 [ 447.306477][ C1] RSP: 0018:ffff88808713f268 EFLAGS: 00000202 [ 447.306481][ C1] RAX: 0000000000000000 RBX: 1ffff110142a22f5 RCX: ffffffff815a93ef [ 447.306483][ C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880a15117a8 [ 447.306486][ C1] RBP: ffff88808713f2e0 R08: dffffc0000000000 R09: ffffed10142a22f6 [ 447.306489][ C1] R10: ffffed10142a22f6 R11: 0000000000000000 R12: ffff8880a15117b0 [ 447.306492][ C1] R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8880a15117a8 [ 447.306495][ C1] FS: 0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 447.306497][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 447.306500][ C1] CR2: 0000000020000610 CR3: 000000000886d000 CR4: 00000000001406e0 [ 447.306503][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 447.306505][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 447.306507][ C1] Call Trace: [ 447.306509][ C1] ? trace_lock_acquire+0x159/0x1d0 [ 447.306511][ C1] do_raw_spin_lock+0x1d6/0x2d0 [ 447.306513][ C1] _raw_spin_lock+0x39/0x40 [ 447.306515][ C1] __dev_queue_xmit+0xde0/0x3020 [ 447.306517][ C1] dev_queue_xmit+0x17/0x20 [ 447.306519][ C1] br_dev_queue_push_xmit+0x551/0x650 [ 447.306521][ C1] ? fdb_add_hw_addr+0x220/0x220 [ 447.306536][ C1] __br_forward+0x439/0x720 [ 447.306537][ C1] br_flood+0x52e/0x840 [ 447.306539][ C1] br_dev_xmit+0xcb6/0x1100 [ 447.306541][ C1] dev_hard_start_xmit+0x1c1/0x3f0 [ 447.306543][ C1] __dev_queue_xmit+0x1e86/0x3020 [ 447.306544][ C1] dev_queue_xmit+0x17/0x20 [ 447.306546][ C1] neigh_resolve_output+0x60c/0x6b0 [ 447.306548][ C1] ip6_finish_output2+0x102c/0x13d0 [ 447.306550][ C1] __ip6_finish_output+0x693/0x910 [ 447.306552][ C1] ip6_finish_output+0x52/0x1e0 [ 447.306554][ C1] ? ip6_output+0x25a/0x390 [ 447.306555][ C1] ip6_output+0x26f/0x390 [ 447.306557][ C1] ndisc_send_skb+0xa35/0xe40 [ 447.306559][ C1] ndisc_send_ns+0x5ce/0x7b0 [ 447.306561][ C1] addrconf_dad_work+0xe40/0x1c20 [ 447.306563][ C1] process_one_work+0x7ef/0x10e0 [ 447.306564][ C1] worker_thread+0xc01/0x1630 [ 447.306566][ C1] ? trace_irq_enable_rcuidle+0x23/0x1e0 [ 447.306568][ C1] kthread+0x332/0x350 [ 447.306570][ C1] ? rcu_lock_release+0x30/0x30 [ 447.306572][ C1] ? kthread_blkcg+0xe0/0xe0 [ 447.306574][ C1] ret_from_fork+0x24/0x30