[info] Using makefile-style concurrent boot in runlevel 2. [ 51.994562][ T26] audit: type=1800 audit(1568473985.754:21): pid=9104 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 52.041459][ T26] audit: type=1800 audit(1568473985.754:22): pid=9104 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 '10.128.0.94' (ECDSA) to the list of known hosts. syzkaller login: [ 87.857293][ T9254] IPVS: ftp: loaded support on port[0] = 21 [ 87.892168][ T9254] chnl_net:caif_netlink_parms(): no params data found [ 87.911064][ T9254] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.918378][ T9254] bridge0: port 1(bridge_slave_0) entered disabled state [ 87.925762][ T9254] device bridge_slave_0 entered promiscuous mode [ 87.933002][ T9254] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.940342][ T9254] bridge0: port 2(bridge_slave_1) entered disabled state [ 87.947982][ T9254] device bridge_slave_1 entered promiscuous mode [ 87.960509][ T9254] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 87.970862][ T9254] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 87.984762][ T9254] team0: Port device team_slave_0 added [ 87.991730][ T9254] team0: Port device team_slave_1 added [ 88.047824][ T9254] device hsr_slave_0 entered promiscuous mode [ 88.116531][ T9254] device hsr_slave_1 entered promiscuous mode [ 88.170608][ T9254] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.177714][ T9254] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.184958][ T9254] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.192034][ T9254] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.212757][ T9254] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.222009][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 88.242087][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.249634][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.257673][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 88.267049][ T9254] 8021q: adding VLAN 0 to HW filter on device team0 [ 88.287149][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 88.295444][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.302512][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.310161][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 88.318610][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.325630][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.340799][ T9254] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 88.351953][ T9254] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 88.363900][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 88.372465][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 88.380951][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 88.389910][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 88.398044][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 88.405511][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 88.418038][ T9254] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 193.446282][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 193.452928][ C0] rcu: 0-...!: (1 GPs behind) idle=eaa/0/0x3 softirq=7994/7995 fqs=22 [ 193.461241][ C0] (t=10500 jiffies g=6973 q=145) [ 193.466238][ C0] rcu: rcu_preempt kthread starved for 10456 jiffies! g6973 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 193.477477][ C0] rcu: RCU grace-period kthread stack dump: [ 193.483338][ C0] rcu_preempt I28896 10 2 0x80004000 [ 193.489655][ C0] Call Trace: [ 193.492938][ C0] __schedule+0x877/0xc50 [ 193.497252][ C0] schedule+0x131/0x1e0 [ 193.501379][ C0] schedule_timeout+0x14f/0x240 [ 193.506205][ C0] ? run_local_timers+0x120/0x120 [ 193.511201][ C0] rcu_gp_kthread+0xef8/0x1790 [ 193.515949][ C0] kthread+0x332/0x350 [ 193.520000][ C0] ? rcu_report_qs_rsp+0x150/0x150 [ 193.525081][ C0] ? kthread_blkcg+0xe0/0xe0 [ 193.529643][ C0] ret_from_fork+0x24/0x30 [ 193.534063][ C0] NMI backtrace for cpu 0 [ 193.538371][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc8+ #0 [ 193.545453][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 193.555480][ C0] Call Trace: [ 193.558739][ C0] [ 193.561567][ C0] dump_stack+0x1d8/0x2f8 [ 193.565871][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 193.570696][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 193.576822][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 193.582860][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 193.588810][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 193.594674][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 193.599759][ C0] rcu_sched_clock_irq+0xb95/0x16d0 [ 193.604931][ C0] ? trace_hardirqs_off+0x74/0x80 [ 193.609932][ C0] update_process_times+0x134/0x190 [ 193.615110][ C0] tick_sched_timer+0x263/0x420 [ 193.619939][ C0] ? tick_setup_sched_timer+0x2c0/0x2c0 [ 193.625456][ C0] __hrtimer_run_queues+0x403/0x850 [ 193.630653][ C0] hrtimer_interrupt+0x38c/0xda0 [ 193.635565][ C0] ? hrtimer_interrupt+0xba4/0xda0 [ 193.640673][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 193.646205][ C0] apic_timer_interrupt+0xf/0x20 [ 193.651261][ C0] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x4/0x90 [ 193.658006][ C0] Code: c1 e0 03 48 83 c8 18 49 89 14 02 4d 89 44 f2 18 49 ff c1 4d 89 0a c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 4c 8b 04 24 <65> 48 8b 04 25 c0 fd 01 00 65 8b 0d 08 6d 8e 7e f7 c1 00 01 1f 00 [ 193.677591][ C0] RSP: 0018:ffff8880aea09398 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 193.685983][ C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888095625e48 [ 193.693930][ C0] RDX: 0000000000000702 RSI: 0000000000000000 RDI: 0000000000000001 [ 193.701875][ C0] RBP: ffff8880aea09448 R08: ffffffff860c5d6a R09: 0000000000000000 [ 193.709832][ C0] R10: fffffbfff117be8d R11: 0000000000000000 R12: dffffc0000000000 [ 193.717777][ C0] R13: ffff888095625b40 R14: ffff888095625e28 R15: ffff888095625ed0 [ 193.725730][ C0] ? apic_timer_interrupt+0xa/0x20 [ 193.730819][ C0] ? hhf_dequeue+0x15a/0xaa0 [ 193.735384][ C0] ? hhf_dequeue+0x15a/0xaa0 [ 193.739950][ C0] __qdisc_run+0x217/0x1b30 [ 193.744431][ C0] ? dev_queue_xmit+0x17/0x20 [ 193.749089][ C0] __dev_queue_xmit+0x1161/0x3020 [ 193.754093][ C0] dev_queue_xmit+0x17/0x20 [ 193.758569][ C0] br_dev_queue_push_xmit+0x551/0x650 [ 193.763915][ C0] ? fdb_add_hw_addr+0x220/0x220 [ 193.768825][ C0] __br_forward+0x439/0x720 [ 193.773303][ C0] br_flood+0x52e/0x840 [ 193.777437][ C0] br_dev_xmit+0xcb6/0x1100 [ 193.781915][ C0] dev_hard_start_xmit+0x1c1/0x3f0 [ 193.786999][ C0] __dev_queue_xmit+0x1e86/0x3020 [ 193.791999][ C0] ? ip6_finish_output2+0xc95/0x13d0 [ 193.797268][ C0] ? ip6_finish_output2+0xdc6/0x13d0 [ 193.802526][ C0] dev_queue_xmit+0x17/0x20 [ 193.806999][ C0] ip6_finish_output2+0xff2/0x13d0 [ 193.812085][ C0] __ip6_finish_output+0x693/0x910 [ 193.817168][ C0] ip6_finish_output+0x52/0x1e0 [ 193.821991][ C0] ? ip6_output+0x25a/0x390 [ 193.826467][ C0] ip6_output+0x26f/0x390 [ 193.830771][ C0] mld_sendpack+0x770/0xb90 [ 193.835256][ C0] mld_ifc_timer_expire+0x820/0xb70 [ 193.840428][ C0] ? mld_gq_timer_expire+0x80/0x80 [ 193.845522][ C0] call_timer_fn+0x95/0x170 [ 193.850016][ C0] ? mld_gq_timer_expire+0x80/0x80 [ 193.855100][ C0] __run_timers+0x79e/0x970 [ 193.859578][ C0] ? check_preemption_disabled+0x47/0x2a0 [ 193.865376][ C0] ? check_preemption_disabled+0x47/0x2a0 [ 193.871067][ C0] run_timer_softirq+0x4a/0x90 [ 193.875803][ C0] __do_softirq+0x333/0x7c4 [ 193.880285][ C0] ? irq_exit+0x227/0x230 [ 193.884600][ C0] irq_exit+0x227/0x230 [ 193.888734][ C0] smp_apic_timer_interrupt+0x113/0x280 [ 193.894252][ C0] apic_timer_interrupt+0xf/0x20 [ 193.899168][ C0] [ 193.902082][ C0] RIP: 0010:native_safe_halt+0xe/0x10 [ 193.907431][ C0] Code: 30 fa eb ae 89 d9 80 e1 07 80 c1 03 38 c1 7c ba 48 89 df e8 44 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 [ 193.927014][ C0] RSP: 0018:ffffffff88807dc0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 193.935396][ C0] RAX: 1ffffffff11150f3 RBX: ffffffff88875a00 RCX: dffffc0000000000 [ 193.943716][ C0] RDX: 0000000000000000 RSI: ffffffff812b7a1a RDI: ffffffff877be46a [ 193.951676][ C0] RBP: ffffffff88807dc8 R08: ffffffff81790e44 R09: fffffbfff110eb41 [ 193.959622][ C0] R10: fffffbfff110eb41 R11: 0000000000000000 R12: dffffc0000000000 [ 193.967577][ C0] R13: 1ffffffff110eb40 R14: dffffc0000000000 R15: 0000000000000000 [ 193.975531][ C0] ? trace_hardirqs_on+0x34/0x80 [ 193.980442][ C0] ? arch_cpu_idle+0xa/0x10 [ 193.984942][ C0] ? default_idle+0x1a/0x70 [ 193.989430][ C0] ? default_idle+0x50/0x70 [ 193.993904][ C0] arch_cpu_idle+0xa/0x10 [ 193.998205][ C0] default_idle_call+0x59/0xa0 [ 194.002943][ C0] do_idle+0x140/0x6d0 [ 194.006998][ C0] ? debug_smp_processor_id+0x1c/0x20 [ 194.012342][ C0] cpu_startup_entry+0x25/0x30 [ 194.017081][ C0] rest_init+0x29d/0x2b0 [ 194.021298][ C0] arch_call_rest_init+0xe/0x10 [ 194.026119][ C0] start_kernel+0x6f5/0x7f6 [ 194.030596][ C0] x86_64_start_reservations+0x18/0x2e [ 194.036027][ C0] x86_64_start_kernel+0x7a/0x7d [ 194.040938][ C0] secondary_startup_64+0xa4/0xb0