[info] Using makefile-style concurrent boot in runlevel 2. [ 59.812751][ T26] audit: type=1800 audit(1568168723.273:21): pid=9495 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 59.845918][ T26] audit: type=1800 audit(1568168723.273:22): pid=9495 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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 '10.128.0.176' (ECDSA) to the list of known hosts. syzkaller login: [ 152.233323][ T9647] IPVS: ftp: loaded support on port[0] = 21 [ 152.275481][ T9647] chnl_net:caif_netlink_parms(): no params data found [ 152.296561][ T9647] bridge0: port 1(bridge_slave_0) entered blocking state [ 152.303892][ T9647] bridge0: port 1(bridge_slave_0) entered disabled state [ 152.311436][ T9647] device bridge_slave_0 entered promiscuous mode [ 152.318450][ T9647] bridge0: port 2(bridge_slave_1) entered blocking state [ 152.325553][ T9647] bridge0: port 2(bridge_slave_1) entered disabled state [ 152.332968][ T9647] device bridge_slave_1 entered promiscuous mode [ 152.346036][ T9647] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 152.356350][ T9647] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 152.371856][ T9647] team0: Port device team_slave_0 added [ 152.378127][ T9647] team0: Port device team_slave_1 added [ 152.431582][ T9647] device hsr_slave_0 entered promiscuous mode [ 152.470315][ T9647] device hsr_slave_1 entered promiscuous mode [ 152.514993][ T9647] bridge0: port 2(bridge_slave_1) entered blocking state [ 152.522063][ T9647] bridge0: port 2(bridge_slave_1) entered forwarding state [ 152.529302][ T9647] bridge0: port 1(bridge_slave_0) entered blocking state [ 152.536363][ T9647] bridge0: port 1(bridge_slave_0) entered forwarding state [ 152.559748][ T9647] 8021q: adding VLAN 0 to HW filter on device bond0 [ 152.569319][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 152.588543][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 152.595984][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 152.604489][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 152.613854][ T9647] 8021q: adding VLAN 0 to HW filter on device team0 [ 152.622708][ T2858] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 152.631043][ T2858] bridge0: port 1(bridge_slave_0) entered blocking state [ 152.638062][ T2858] bridge0: port 1(bridge_slave_0) entered forwarding state [ 152.656382][ T9647] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 152.666946][ T9647] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 152.679289][ T9651] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 152.687779][ T9651] bridge0: port 2(bridge_slave_1) entered blocking state [ 152.694880][ T9651] bridge0: port 2(bridge_slave_1) entered forwarding state [ 152.703668][ T9651] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready executing program [ 152.711967][ T9651] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 152.720222][ T9651] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 152.728296][ T9651] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 152.737130][ T2858] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 152.744654][ T2858] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 152.757924][ T9647] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 257.790138][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 257.796848][ C0] rcu: 0-...!: (1 GPs behind) idle=596/1/0x4000000000000002 softirq=8725/8726 fqs=2 [ 257.806365][ C0] (t=10501 jiffies g=8713 q=78) [ 257.811283][ C0] rcu: rcu_preempt kthread starved for 10498 jiffies! g8713 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 257.822355][ C0] rcu: RCU grace-period kthread stack dump: [ 257.828220][ C0] rcu_preempt R running task 29520 10 2 0x80004000 [ 257.836094][ C0] Call Trace: [ 257.839474][ C0] __schedule+0x755/0x1580 [ 257.843878][ C0] ? __sched_text_start+0x8/0x8 [ 257.848709][ C0] schedule+0xd9/0x260 [ 257.852759][ C0] schedule_timeout+0x486/0xc50 [ 257.857648][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 257.862564][ C0] ? usleep_range+0x170/0x170 [ 257.867243][ C0] ? trace_hardirqs_on+0x67/0x240 [ 257.872290][ C0] ? __kasan_check_read+0x11/0x20 [ 257.877321][ C0] ? __next_timer_interrupt+0x1a0/0x1a0 [ 257.882901][ C0] ? swake_up_one+0x60/0x60 [ 257.887417][ C0] rcu_gp_kthread+0x9b2/0x18c0 [ 257.892172][ C0] ? rcu_barrier+0x310/0x310 [ 257.896740][ C0] ? trace_hardirqs_on+0x67/0x240 [ 257.901746][ C0] ? __kasan_check_read+0x11/0x20 [ 257.906804][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 257.913065][ C0] ? __kthread_parkme+0x108/0x1c0 [ 257.918070][ C0] ? __kasan_check_read+0x11/0x20 [ 257.923076][ C0] kthread+0x361/0x430 [ 257.927123][ C0] ? rcu_barrier+0x310/0x310 [ 257.931689][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 257.937908][ C0] ret_from_fork+0x24/0x30 [ 257.942307][ C0] NMI backtrace for cpu 0 [ 257.946668][ C0] CPU: 0 PID: 2858 Comm: kworker/0:2 Not tainted 5.3.0-rc8+ #0 [ 257.954182][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 257.964286][ C0] Workqueue: ipv6_addrconf addrconf_dad_work [ 257.970238][ C0] Call Trace: [ 257.973498][ C0] [ 257.976352][ C0] dump_stack+0x172/0x1f0 [ 257.980660][ C0] nmi_cpu_backtrace.cold+0x70/0xb2 [ 257.985844][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 257.992114][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 257.997723][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 258.003684][ C0] arch_trigger_cpumask_backtrace+0x14/0x20 [ 258.009555][ C0] rcu_dump_cpu_stacks+0x183/0x1cf [ 258.014645][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 258.020199][ C0] ? raise_softirq+0x138/0x340 [ 258.024944][ C0] update_process_times+0x32/0x80 [ 258.029963][ C0] tick_sched_handle+0xa2/0x190 [ 258.034793][ C0] tick_sched_timer+0x53/0x140 [ 258.039537][ C0] __hrtimer_run_queues+0x364/0xe40 [ 258.044725][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 258.049990][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 258.055610][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 258.061305][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 258.067347][ C0] hrtimer_interrupt+0x314/0x770 [ 258.072301][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 258.077833][ C0] apic_timer_interrupt+0xf/0x20 [ 258.082745][ C0] [ 258.085664][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 [ 258.091730][ C0] Code: 89 25 34 4d 19 09 41 bc f4 ff ff ff e8 6d 9f e9 ff 48 c7 05 1e 4d 19 09 00 00 00 00 e9 77 e9 ff ff 90 90 90 90 90 90 90 90 90 <55> 48 89 e5 65 48 8b 04 25 40 fe 01 00 65 8b 15 04 89 8f 7e 81 e2 [ 258.111310][ C0] RSP: 0018:ffff8880a0ff73f0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 258.119698][ C0] RAX: 0000000000000000 RBX: ffff8880a74b14f8 RCX: ffffffff85c65b39 [ 258.127654][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 [ 258.135610][ C0] RBP: ffff8880a0ff7448 R08: ffff8880a0806440 R09: 0000000000000000 [ 258.143559][ C0] R10: fffffbfff134afaf R11: ffff8880a0806440 R12: dffffc0000000000 [ 258.151507][ C0] R13: ffff8880a74b1200 R14: ffff8880a74b1590 R15: 0000000000000000 [ 258.159515][ C0] ? hhf_dequeue+0xb9/0xa20 [ 258.163998][ C0] ? hhf_dequeue+0x537/0xa20 [ 258.168605][ C0] __qdisc_run+0x1e7/0x19d0 [ 258.173125][ C0] ? dev_queue_xmit+0x18/0x20 [ 258.177790][ C0] __dev_queue_xmit+0x16f1/0x3650 [ 258.182814][ C0] ? ndisc_constructor+0x1a5/0xb40 [ 258.187903][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 258.193170][ C0] ? ip6_finish_output2+0x1034/0x2520 [ 258.198518][ C0] ? __kasan_check_read+0x11/0x20 [ 258.203525][ C0] ? lock_downgrade+0x920/0x920 [ 258.208358][ C0] dev_queue_xmit+0x18/0x20 [ 258.212836][ C0] ? dev_queue_xmit+0x18/0x20 [ 258.217518][ C0] neigh_resolve_output+0x5a5/0x970 [ 258.222697][ C0] ip6_finish_output2+0x1034/0x2520 [ 258.227871][ C0] ? ip6_mtu+0x2e6/0x460 [ 258.232092][ C0] ? ip6_forward_finish+0x530/0x530 [ 258.237266][ C0] ? lock_downgrade+0x920/0x920 [ 258.242093][ C0] ? ip6_mtu+0x16f/0x460 [ 258.246314][ C0] __ip6_finish_output+0x444/0xa50 [ 258.251399][ C0] ? __ip6_finish_output+0x444/0xa50 [ 258.256660][ C0] ip6_finish_output+0x38/0x1f0 [ 258.261485][ C0] ip6_output+0x235/0x7c0 [ 258.265800][ C0] ? ip6_finish_output+0x1f0/0x1f0 [ 258.270887][ C0] ? __ip6_finish_output+0xa50/0xa50 [ 258.276145][ C0] ? ndisc_send_skb+0x803/0x1450 [ 258.281062][ C0] ndisc_send_skb+0xf29/0x1450 [ 258.285806][ C0] ? nf_hook.constprop.0+0x560/0x560 [ 258.291106][ C0] ? skb_set_owner_w+0x21b/0x320 [ 258.296022][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 258.301725][ C0] ndisc_send_ns+0x3a9/0x850 [ 258.306306][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 258.312523][ C0] ? ndisc_netdev_event+0x4e0/0x4e0 [ 258.317696][ C0] ? addrconf_dad_work+0xac4/0x1150 [ 258.322871][ C0] ? trace_hardirqs_on+0x67/0x240 [ 258.327875][ C0] ? addrconf_dad_work+0xac4/0x1150 [ 258.333054][ C0] addrconf_dad_work+0xb88/0x1150 [ 258.338065][ C0] ? addrconf_dad_completed+0xbb0/0xbb0 [ 258.343584][ C0] ? lock_acquire+0x190/0x410 [ 258.348237][ C0] ? trace_hardirqs_on+0x67/0x240 [ 258.353281][ C0] process_one_work+0x9af/0x1740 [ 258.358211][ C0] ? pwq_dec_nr_in_flight+0x320/0x320 [ 258.363561][ C0] ? lock_acquire+0x190/0x410 [ 258.368218][ C0] worker_thread+0x98/0xe40 [ 258.372695][ C0] ? trace_hardirqs_on+0x67/0x240 [ 258.377697][ C0] kthread+0x361/0x430 [ 258.381744][ C0] ? process_one_work+0x1740/0x1740 [ 258.386918][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 258.393134][ C0] ret_from_fork+0x24/0x30