[info] Using makefile-style concurrent boot in runlevel 2. [ 57.114887][ T26] audit: type=1800 audit(1568467191.480:21): pid=9309 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 57.162424][ T26] audit: type=1800 audit(1568467191.490:22): pid=9309 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 '10.128.0.159' (ECDSA) to the list of known hosts. syzkaller login: [ 259.520227][ T9459] IPVS: ftp: loaded support on port[0] = 21 [ 259.554138][ T9459] chnl_net:caif_netlink_parms(): no params data found [ 259.572997][ T9459] bridge0: port 1(bridge_slave_0) entered blocking state [ 259.580340][ T9459] bridge0: port 1(bridge_slave_0) entered disabled state [ 259.587887][ T9459] device bridge_slave_0 entered promiscuous mode [ 259.594856][ T9459] bridge0: port 2(bridge_slave_1) entered blocking state [ 259.602007][ T9459] bridge0: port 2(bridge_slave_1) entered disabled state [ 259.609426][ T9459] device bridge_slave_1 entered promiscuous mode [ 259.621616][ T9459] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 259.631674][ T9459] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 259.645596][ T9459] team0: Port device team_slave_0 added [ 259.652160][ T9459] team0: Port device team_slave_1 added [ 259.719393][ T9459] device hsr_slave_0 entered promiscuous mode [ 259.777955][ T9459] device hsr_slave_1 entered promiscuous mode [ 259.845979][ T9459] bridge0: port 2(bridge_slave_1) entered blocking state [ 259.853197][ T9459] bridge0: port 2(bridge_slave_1) entered forwarding state [ 259.860680][ T9459] bridge0: port 1(bridge_slave_0) entered blocking state [ 259.867787][ T9459] bridge0: port 1(bridge_slave_0) entered forwarding state [ 259.891110][ T9459] 8021q: adding VLAN 0 to HW filter on device bond0 [ 259.903063][ T3021] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 259.921911][ T3021] bridge0: port 1(bridge_slave_0) entered disabled state [ 259.929898][ T3021] bridge0: port 2(bridge_slave_1) entered disabled state [ 259.937435][ T3021] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 259.947563][ T9459] 8021q: adding VLAN 0 to HW filter on device team0 [ 259.956821][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 259.965311][ T22] bridge0: port 1(bridge_slave_0) entered blocking state [ 259.972581][ T22] bridge0: port 1(bridge_slave_0) entered forwarding state [ 259.982605][ T3021] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 259.991457][ T3021] bridge0: port 2(bridge_slave_1) entered blocking state [ 259.998579][ T3021] bridge0: port 2(bridge_slave_1) entered forwarding state [ 260.017146][ T9459] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 260.027668][ T9459] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 260.039379][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 260.048136][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 260.056406][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 260.064711][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 260.073415][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 260.081053][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program executing program executing program executing program executing program executing program [ 260.094502][ T9459] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 365.137688][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 365.144606][ C0] rcu: 0-...!: (1 GPs behind) idle=9aa/1/0x4000000000000002 softirq=9203/9208 fqs=15 [ 365.154242][ C0] (t=10500 jiffies g=7709 q=142) [ 365.159244][ C0] rcu: rcu_preempt kthread starved for 10469 jiffies! g7709 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 365.170597][ C0] rcu: RCU grace-period kthread stack dump: [ 365.176498][ C0] rcu_preempt I29080 10 2 0x80004000 [ 365.182901][ C0] Call Trace: [ 365.186297][ C0] __schedule+0x877/0xc50 [ 365.190617][ C0] schedule+0x131/0x1e0 [ 365.194764][ C0] schedule_timeout+0x14f/0x240 [ 365.199681][ C0] ? run_local_timers+0x120/0x120 [ 365.204717][ C0] rcu_gp_kthread+0xef8/0x1790 [ 365.209512][ C0] kthread+0x332/0x350 [ 365.213580][ C0] ? rcu_report_qs_rsp+0x150/0x150 [ 365.218674][ C0] ? kthread_blkcg+0xe0/0xe0 [ 365.223293][ C0] ret_from_fork+0x24/0x30 [ 365.227718][ C0] NMI backtrace for cpu 0 [ 365.232034][ C0] CPU: 0 PID: 3021 Comm: kworker/0:2 Not tainted 5.3.0-rc8+ #0 [ 365.239550][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 365.249675][ C0] Workqueue: ipv6_addrconf addrconf_dad_work [ 365.255758][ C0] Call Trace: [ 365.259037][ C0] [ 365.261933][ C0] dump_stack+0x1d8/0x2f8 [ 365.266254][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 365.271079][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 365.277261][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 365.283397][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 365.289368][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 365.295281][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 365.300407][ C0] rcu_sched_clock_irq+0xb95/0x16d0 [ 365.305677][ C0] ? trace_hardirqs_off+0x74/0x80 [ 365.310719][ C0] update_process_times+0x134/0x190 [ 365.315957][ C0] tick_sched_timer+0x263/0x420 [ 365.320802][ C0] ? tick_setup_sched_timer+0x2c0/0x2c0 [ 365.326349][ C0] __hrtimer_run_queues+0x403/0x850 [ 365.331533][ C0] hrtimer_interrupt+0x38c/0xda0 [ 365.336457][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 365.342099][ C0] apic_timer_interrupt+0xf/0x20 [ 365.347192][ C0] [ 365.350216][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x48/0x50 [ 365.356807][ C0] Code: f0 12 00 00 83 fa 02 75 21 48 8b 91 f8 12 00 00 48 8b 32 48 8d 7e 01 8b 89 f4 12 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89 3a 0f 1f 80 00 00 00 00 4c 8b 04 24 65 48 8b 04 25 c0 fd 01 00 65 [ 365.376405][ C0] RSP: 0018:ffff88809f67f590 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 365.385003][ C0] RAX: ffffffff860c5e92 RBX: 0000000000000000 RCX: ffff88809f66a180 [ 365.392970][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 365.400922][ C0] RBP: ffff88809f67f640 R08: ffffffff860c5d6a R09: 0000000000000000 [ 365.408886][ C0] R10: fffffbfff117be8d R11: 0000000000000000 R12: dffffc0000000000 [ 365.416840][ C0] R13: ffff8880991f4480 R14: ffff8880991f4768 R15: ffff8880991f4810 [ 365.424905][ C0] ? hhf_dequeue+0x15a/0xaa0 [ 365.429491][ C0] ? hhf_dequeue+0x282/0xaa0 [ 365.434076][ C0] ? hhf_dequeue+0x282/0xaa0 [ 365.438662][ C0] ? hhf_enqueue+0x19dc/0x2110 [ 365.443449][ C0] __qdisc_run+0x217/0x1b30 [ 365.447970][ C0] ? dev_queue_xmit+0x17/0x20 [ 365.452627][ C0] __dev_queue_xmit+0x1161/0x3020 [ 365.457638][ C0] dev_queue_xmit+0x17/0x20 [ 365.462191][ C0] neigh_resolve_output+0x60c/0x6b0 [ 365.467375][ C0] ip6_finish_output2+0x102c/0x13d0 [ 365.472567][ C0] __ip6_finish_output+0x693/0x910 [ 365.477657][ C0] ip6_finish_output+0x52/0x1e0 [ 365.482498][ C0] ? ip6_output+0x25a/0x390 [ 365.486997][ C0] ip6_output+0x26f/0x390 [ 365.491344][ C0] ndisc_send_skb+0xa35/0xe40 [ 365.496019][ C0] ndisc_send_ns+0x5ce/0x7b0 [ 365.500604][ C0] addrconf_dad_work+0xe40/0x1c20 [ 365.505607][ C0] process_one_work+0x7ef/0x10e0 [ 365.510539][ C0] worker_thread+0xc01/0x1630 [ 365.515219][ C0] kthread+0x332/0x350 [ 365.519262][ C0] ? rcu_lock_release+0x30/0x30 [ 365.524087][ C0] ? kthread_blkcg+0xe0/0xe0 [ 365.528657][ C0] ret_from_fork+0x24/0x30