[info] Using makefile-style concurrent boot in runlevel 2. [ 58.366911][ T26] audit: type=1800 audit(1568488240.764:21): pid=9471 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 58.419666][ T26] audit: type=1800 audit(1568488240.764:22): pid=9471 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 '10.128.0.118' (ECDSA) to the list of known hosts. syzkaller login: [ 270.846398][ T9623] IPVS: ftp: loaded support on port[0] = 21 [ 270.892297][ T9623] chnl_net:caif_netlink_parms(): no params data found [ 270.913355][ T9623] bridge0: port 1(bridge_slave_0) entered blocking state [ 270.921126][ T9623] bridge0: port 1(bridge_slave_0) entered disabled state [ 270.928865][ T9623] device bridge_slave_0 entered promiscuous mode [ 270.936060][ T9623] bridge0: port 2(bridge_slave_1) entered blocking state [ 270.943235][ T9623] bridge0: port 2(bridge_slave_1) entered disabled state [ 270.950807][ T9623] device bridge_slave_1 entered promiscuous mode [ 270.964236][ T9623] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 270.974251][ T9623] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 270.989315][ T9623] team0: Port device team_slave_0 added [ 270.996157][ T9623] team0: Port device team_slave_1 added [ 271.055343][ T9623] device hsr_slave_0 entered promiscuous mode [ 271.093806][ T9623] device hsr_slave_1 entered promiscuous mode [ 271.158552][ T9623] bridge0: port 2(bridge_slave_1) entered blocking state [ 271.165628][ T9623] bridge0: port 2(bridge_slave_1) entered forwarding state [ 271.172890][ T9623] bridge0: port 1(bridge_slave_0) entered blocking state [ 271.179967][ T9623] bridge0: port 1(bridge_slave_0) entered forwarding state [ 271.204238][ T9623] 8021q: adding VLAN 0 to HW filter on device bond0 [ 271.214205][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 271.232203][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 271.240283][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 271.248214][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 271.257745][ T9623] 8021q: adding VLAN 0 to HW filter on device team0 [ 271.266513][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 271.274858][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 271.281877][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 271.291107][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 271.299913][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 271.306969][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 271.320064][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 271.328367][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 271.337939][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 271.348185][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 271.358040][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 271.368072][ T9623] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 271.381852][ T9623] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 376.453488][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 376.460116][ C1] rcu: 1-...!: (1 GPs behind) idle=2b6/1/0x4000000000000002 softirq=9569/9570 fqs=30 [ 376.469813][ C1] (t=10501 jiffies g=8609 q=69) [ 376.474738][ C1] rcu: rcu_preempt kthread starved for 10442 jiffies! g8609 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 376.485993][ C1] rcu: RCU grace-period kthread stack dump: [ 376.491864][ C1] rcu_preempt I29328 10 2 0x80004000 [ 376.498178][ C1] Call Trace: [ 376.501571][ C1] __schedule+0x755/0x1580 [ 376.505974][ C1] ? __sched_text_start+0x8/0x8 [ 376.510805][ C1] schedule+0xd9/0x260 [ 376.514851][ C1] schedule_timeout+0x486/0xc50 [ 376.519727][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 376.524642][ C1] ? usleep_range+0x170/0x170 [ 376.529327][ C1] ? trace_hardirqs_on+0x67/0x240 [ 376.534382][ C1] ? __kasan_check_read+0x11/0x20 [ 376.539416][ C1] ? __next_timer_interrupt+0x1a0/0x1a0 [ 376.544962][ C1] ? swake_up_one+0x60/0x60 [ 376.549476][ C1] rcu_gp_kthread+0x9b2/0x18c0 [ 376.554222][ C1] ? rcu_barrier+0x310/0x310 [ 376.558792][ C1] ? trace_hardirqs_on+0x67/0x240 [ 376.563804][ C1] ? __kasan_check_read+0x11/0x20 [ 376.568846][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 376.575086][ C1] ? __kthread_parkme+0x108/0x1c0 [ 376.580086][ C1] ? __kasan_check_read+0x11/0x20 [ 376.585091][ C1] kthread+0x361/0x430 [ 376.589136][ C1] ? rcu_barrier+0x310/0x310 [ 376.593702][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 376.599922][ C1] ret_from_fork+0x24/0x30 [ 376.604450][ C1] NMI backtrace for cpu 1 [ 376.608763][ C1] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.3.0-rc8+ #0 [ 376.616104][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 376.626232][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 376.632184][ C1] Call Trace: [ 376.635443][ C1] [ 376.638297][ C1] dump_stack+0x172/0x1f0 [ 376.642606][ C1] nmi_cpu_backtrace.cold+0x70/0xb2 [ 376.647786][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 376.654046][ C1] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 376.659657][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 376.665615][ C1] arch_trigger_cpumask_backtrace+0x14/0x20 [ 376.671487][ C1] rcu_dump_cpu_stacks+0x183/0x1cf [ 376.676580][ C1] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 376.682139][ C1] ? raise_softirq+0x138/0x340 [ 376.686887][ C1] update_process_times+0x32/0x80 [ 376.691910][ C1] tick_sched_handle+0xa2/0x190 [ 376.696739][ C1] tick_sched_timer+0x53/0x140 [ 376.701488][ C1] __hrtimer_run_queues+0x364/0xe40 [ 376.706662][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 376.711928][ C1] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 376.717449][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 376.723141][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 376.729184][ C1] hrtimer_interrupt+0x314/0x770 [ 376.734140][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 376.739663][ C1] apic_timer_interrupt+0xf/0x20 [ 376.744569][ C1] [ 376.747548][ C1] RIP: 0010:__list_add_valid+0x0/0xa0 [ 376.752902][ C1] Code: 8b 75 08 48 c7 c7 40 28 c6 87 e8 3f d8 1d fe e8 36 47 f9 03 e9 87 fe ff ff e8 fc 46 6e fe eb 9e 90 90 90 90 90 90 90 90 90 90 <48> b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 55 49 89 fd 48 8d 7a [ 376.772482][ C1] RSP: 0018:ffff8880a9916d50 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 376.780870][ C1] RAX: 1ffff11012bd5103 RBX: ffff888095ea8778 RCX: ffffffff85c67051 [ 376.788817][ C1] RDX: ffff888095ea8810 RSI: ffff888095ea8810 RDI: ffff888095ea8778 [ 376.796772][ C1] RBP: ffff8880a9916da8 R08: ffff8880a9906480 R09: 0000000000000000 [ 376.804722][ C1] R10: fffffbfff134afaf R11: ffff8880a9906480 R12: dffffc0000000000 [ 376.812677][ C1] R13: ffff888095ea8480 R14: ffff888095ea8818 R15: ffff888095ea8810 [ 376.820694][ C1] ? hhf_dequeue+0x5d1/0xa20 [ 376.825264][ C1] ? hhf_dequeue+0x66d/0xa20 [ 376.829873][ C1] __qdisc_run+0x1e7/0x19d0 [ 376.834436][ C1] ? dev_queue_xmit+0x18/0x20 [ 376.839097][ C1] __dev_queue_xmit+0x16f1/0x3650 [ 376.844100][ C1] ? __local_bh_enable_ip+0x15a/0x270 [ 376.849464][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 376.854749][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 376.861045][ C1] ? br_nf_post_routing+0xd73/0x1d30 [ 376.866335][ C1] ? br_forward_finish+0x235/0x400 [ 376.871428][ C1] ? __kasan_check_read+0x11/0x20 [ 376.876433][ C1] ? __dev_queue_xmit+0x2b15/0x3650 [ 376.881613][ C1] dev_queue_xmit+0x18/0x20 [ 376.886095][ C1] ? dev_queue_xmit+0x18/0x20 [ 376.890753][ C1] br_dev_queue_push_xmit+0x3f3/0x5c0 [ 376.896146][ C1] ? nf_hook_slow+0xf0/0x1e0 [ 376.900716][ C1] br_forward_finish+0xfa/0x400 [ 376.905548][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 376.911071][ C1] ? br_fdb_add.cold+0x8c/0x8c [ 376.915817][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 376.921511][ C1] ? nf_hook_slow+0xf0/0x1e0 [ 376.926081][ C1] __br_forward+0x641/0xb00 [ 376.930560][ C1] ? br_forward_finish+0x400/0x400 [ 376.935648][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 376.941170][ C1] deliver_clone+0x61/0xc0 [ 376.945560][ C1] maybe_deliver+0x2c7/0x390 [ 376.950127][ C1] br_flood+0x13a/0x3d0 [ 376.954297][ C1] br_dev_xmit+0x98c/0x15a0 [ 376.958785][ C1] ? br_poll_controller+0x10/0x10 [ 376.963788][ C1] ? netif_skb_features+0x6c2/0xb90 [ 376.968991][ C1] ? netdev_set_sb_channel+0xe0/0xe0 [ 376.974256][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 376.980494][ C1] ? validate_xmit_xfrm+0x43c/0xf10 [ 376.985669][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 376.990614][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 376.996851][ C1] dev_hard_start_xmit+0x1a3/0x9c0 [ 377.001954][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 377.008180][ C1] __dev_queue_xmit+0x2b15/0x3650 [ 377.013249][ C1] ? ndisc_constructor+0x1a5/0xb40 [ 377.018354][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 377.023618][ C1] ? ip6_finish_output2+0x1034/0x2520 [ 377.028969][ C1] ? __kasan_check_read+0x11/0x20 [ 377.033975][ C1] ? lock_downgrade+0x920/0x920 [ 377.038803][ C1] dev_queue_xmit+0x18/0x20 [ 377.043283][ C1] ? dev_queue_xmit+0x18/0x20 [ 377.047978][ C1] neigh_resolve_output+0x5a5/0x970 [ 377.053170][ C1] ip6_finish_output2+0x1034/0x2520 [ 377.058350][ C1] ? ip6_forward_finish+0x530/0x530 [ 377.063526][ C1] ? lock_downgrade+0x920/0x920 [ 377.068352][ C1] ? ip6_mtu+0x16f/0x460 [ 377.072575][ C1] __ip6_finish_output+0x444/0xa50 [ 377.077661][ C1] ? __ip6_finish_output+0x444/0xa50 [ 377.082923][ C1] ip6_finish_output+0x38/0x1f0 [ 377.087754][ C1] ip6_output+0x235/0x7c0 [ 377.092061][ C1] ? ip6_finish_output+0x1f0/0x1f0 [ 377.097150][ C1] ? __ip6_finish_output+0xa50/0xa50 [ 377.102416][ C1] ? ndisc_send_skb+0x803/0x1450 [ 377.107334][ C1] ndisc_send_skb+0xf29/0x1450 [ 377.112081][ C1] ? nf_hook.constprop.0+0x560/0x560 [ 377.117385][ C1] ? skb_set_owner_w+0x21b/0x320 [ 377.122306][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 377.128022][ C1] ndisc_send_ns+0x3a9/0x850 [ 377.132600][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 377.138829][ C1] ? ndisc_netdev_event+0x4e0/0x4e0 [ 377.144012][ C1] ? addrconf_dad_work+0xac4/0x1150 [ 377.149185][ C1] ? trace_hardirqs_on+0x67/0x240 [ 377.154190][ C1] ? addrconf_dad_work+0xac4/0x1150 [ 377.159376][ C1] addrconf_dad_work+0xb88/0x1150 [ 377.164379][ C1] ? addrconf_dad_completed+0xbb0/0xbb0 [ 377.169898][ C1] ? lock_acquire+0x190/0x410 [ 377.174551][ C1] ? trace_hardirqs_on+0x67/0x240 [ 377.179596][ C1] process_one_work+0x9af/0x1740 [ 377.184516][ C1] ? pwq_dec_nr_in_flight+0x320/0x320 [ 377.189865][ C1] ? lock_acquire+0x190/0x410 [ 377.194525][ C1] worker_thread+0x98/0xe40 [ 377.199007][ C1] kthread+0x361/0x430 [ 377.203052][ C1] ? process_one_work+0x1740/0x1740 [ 377.208227][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 377.214452][ C1] ret_from_fork+0x24/0x30