[info] Using makefile-style concurrent boot in runlevel 2. [ 55.999874][ T26] audit: type=1800 audit(1568503710.210:21): pid=9265 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 56.047627][ T26] audit: type=1800 audit(1568503710.210:22): pid=9265 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 '10.128.1.28' (ECDSA) to the list of known hosts. syzkaller login: [ 264.864816][ T9417] IPVS: ftp: loaded support on port[0] = 21 [ 264.907035][ T9417] chnl_net:caif_netlink_parms(): no params data found [ 264.928274][ T9417] bridge0: port 1(bridge_slave_0) entered blocking state [ 264.935690][ T9417] bridge0: port 1(bridge_slave_0) entered disabled state [ 264.943249][ T9417] device bridge_slave_0 entered promiscuous mode [ 264.950415][ T9417] bridge0: port 2(bridge_slave_1) entered blocking state [ 264.957444][ T9417] bridge0: port 2(bridge_slave_1) entered disabled state [ 264.964952][ T9417] device bridge_slave_1 entered promiscuous mode [ 264.977037][ T9417] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 264.987302][ T9417] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 265.002710][ T9417] team0: Port device team_slave_0 added [ 265.009414][ T9417] team0: Port device team_slave_1 added [ 265.089925][ T9417] device hsr_slave_0 entered promiscuous mode [ 265.138865][ T9417] device hsr_slave_1 entered promiscuous mode [ 265.213213][ T9417] bridge0: port 2(bridge_slave_1) entered blocking state [ 265.220398][ T9417] bridge0: port 2(bridge_slave_1) entered forwarding state [ 265.227617][ T9417] bridge0: port 1(bridge_slave_0) entered blocking state [ 265.234655][ T9417] bridge0: port 1(bridge_slave_0) entered forwarding state [ 265.257144][ T9417] 8021q: adding VLAN 0 to HW filter on device bond0 [ 265.266290][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 265.285638][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 265.293025][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 265.300854][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 265.310468][ T9417] 8021q: adding VLAN 0 to HW filter on device team0 [ 265.319228][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 265.327351][ T3516] bridge0: port 1(bridge_slave_0) entered blocking state [ 265.334381][ T3516] bridge0: port 1(bridge_slave_0) entered forwarding state [ 265.351077][ T9417] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 265.361529][ T9417] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 265.373719][ T9421] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 265.382329][ T9421] bridge0: port 2(bridge_slave_1) entered blocking state [ 265.389381][ T9421] bridge0: port 2(bridge_slave_1) entered forwarding state [ 265.397354][ T9421] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 265.406463][ T9421] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready executing program [ 265.414598][ T9421] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 265.422682][ T9421] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 265.434266][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 265.441700][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 265.452428][ T9417] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 370.548551][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 370.555275][ C0] rcu: 0-...!: (10499 ticks this GP) idle=cf6/1/0x4000000000000002 softirq=8359/8359 fqs=3 [ 370.565387][ C0] (t=10500 jiffies g=8089 q=64) [ 370.570295][ C0] rcu: rcu_preempt kthread starved for 10494 jiffies! g8089 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 370.581537][ C0] rcu: RCU grace-period kthread stack dump: [ 370.587397][ C0] rcu_preempt I29328 10 2 0x80004000 [ 370.593709][ C0] Call Trace: [ 370.597038][ C0] __schedule+0x755/0x1580 [ 370.601434][ C0] ? __sched_text_start+0x8/0x8 [ 370.606261][ C0] schedule+0xd9/0x260 [ 370.610301][ C0] schedule_timeout+0x486/0xc50 [ 370.615121][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 370.620032][ C0] ? usleep_range+0x170/0x170 [ 370.624680][ C0] ? trace_hardirqs_on+0x67/0x240 [ 370.629678][ C0] ? __kasan_check_read+0x11/0x20 [ 370.634697][ C0] ? __next_timer_interrupt+0x1a0/0x1a0 [ 370.640214][ C0] ? swake_up_one+0x60/0x60 [ 370.644694][ C0] rcu_gp_kthread+0x9b2/0x18c0 [ 370.649435][ C0] ? rcu_barrier+0x310/0x310 [ 370.653997][ C0] ? trace_hardirqs_on+0x67/0x240 [ 370.659001][ C0] ? __kasan_check_read+0x11/0x20 [ 370.664093][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 370.670307][ C0] ? __kthread_parkme+0x108/0x1c0 [ 370.675303][ C0] ? __kasan_check_read+0x11/0x20 [ 370.680301][ C0] kthread+0x361/0x430 [ 370.684340][ C0] ? rcu_barrier+0x310/0x310 [ 370.688909][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 370.695138][ C0] ret_from_fork+0x24/0x30 [ 370.699556][ C0] NMI backtrace for cpu 0 [ 370.703863][ C0] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.3.0-rc8+ #0 [ 370.711116][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 370.721200][ C0] Workqueue: ipv6_addrconf addrconf_dad_work [ 370.727148][ C0] Call Trace: [ 370.730401][ C0] [ 370.733255][ C0] dump_stack+0x172/0x1f0 [ 370.737558][ C0] nmi_cpu_backtrace.cold+0x70/0xb2 [ 370.742727][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 370.748958][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 370.754565][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 370.760517][ C0] arch_trigger_cpumask_backtrace+0x14/0x20 [ 370.766381][ C0] rcu_dump_cpu_stacks+0x183/0x1cf [ 370.771469][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 370.776992][ C0] ? raise_softirq+0x138/0x340 [ 370.781730][ C0] update_process_times+0x32/0x80 [ 370.786725][ C0] tick_sched_handle+0xa2/0x190 [ 370.791548][ C0] tick_sched_timer+0x53/0x140 [ 370.796287][ C0] __hrtimer_run_queues+0x364/0xe40 [ 370.801473][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 370.806731][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 370.812247][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 370.817934][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 370.823974][ C0] hrtimer_interrupt+0x314/0x770 [ 370.828922][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 370.834473][ C0] apic_timer_interrupt+0xf/0x20 [ 370.839377][ C0] [ 370.842299][ C0] RIP: 0010:__list_add_valid+0xb/0xa0 [ 370.847647][ C0] Code: 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 08 41 54 49 89 d4 48 89 fa 48 83 [ 370.867221][ C0] RSP: 0018:ffff8880a9886d48 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 370.875604][ C0] RAX: dffffc0000000000 RBX: ffff8880968cf4f8 RCX: ffffffff85c67051 [ 370.883560][ C0] RDX: ffff8880968cf590 RSI: ffff8880968cf590 RDI: ffff8880968cf4f8 [ 370.891505][ C0] RBP: ffff8880a9886da8 R08: ffff8880a9876140 R09: 0000000000000000 [ 370.899452][ C0] R10: fffffbfff134afaf R11: ffff8880a9876140 R12: dffffc0000000000 [ 370.907403][ C0] R13: ffff8880968cf200 R14: ffff8880968cf598 R15: ffff8880968cf590 [ 370.915387][ C0] ? hhf_dequeue+0x5d1/0xa20 [ 370.919956][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 370.926166][ C0] ? hhf_dequeue+0x66d/0xa20 [ 370.930759][ C0] __qdisc_run+0x1e7/0x19d0 [ 370.935245][ C0] ? dev_queue_xmit+0x18/0x20 [ 370.939909][ C0] __dev_queue_xmit+0x16f1/0x3650 [ 370.944904][ C0] ? __local_bh_enable_ip+0x15a/0x270 [ 370.950258][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 370.955514][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 370.961739][ C0] ? br_nf_post_routing+0xd73/0x1d30 [ 370.967010][ C0] ? br_forward_finish+0x235/0x400 [ 370.972092][ C0] ? __kasan_check_read+0x11/0x20 [ 370.977083][ C0] ? __dev_queue_xmit+0x2b15/0x3650 [ 370.982248][ C0] dev_queue_xmit+0x18/0x20 [ 370.986727][ C0] ? dev_queue_xmit+0x18/0x20 [ 370.991386][ C0] br_dev_queue_push_xmit+0x3f3/0x5c0 [ 370.996753][ C0] ? nf_hook_slow+0xf0/0x1e0 [ 371.001314][ C0] br_forward_finish+0xfa/0x400 [ 371.006138][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 371.011654][ C0] ? br_fdb_add.cold+0x8c/0x8c [ 371.016409][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 371.022101][ C0] ? nf_hook_slow+0xf0/0x1e0 [ 371.026664][ C0] __br_forward+0x641/0xb00 [ 371.031148][ C0] ? br_forward_finish+0x400/0x400 [ 371.036230][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 371.041758][ C0] deliver_clone+0x61/0xc0 [ 371.046142][ C0] maybe_deliver+0x2c7/0x390 [ 371.050702][ C0] br_flood+0x13a/0x3d0 [ 371.054863][ C0] br_dev_xmit+0x98c/0x15a0 [ 371.059342][ C0] ? br_poll_controller+0x10/0x10 [ 371.064337][ C0] ? netif_skb_features+0x6c2/0xb90 [ 371.069540][ C0] ? netdev_set_sb_channel+0xe0/0xe0 [ 371.074797][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 371.081122][ C0] ? validate_xmit_xfrm+0x43c/0xf10 [ 371.086292][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 371.091201][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 371.097411][ C0] dev_hard_start_xmit+0x1a3/0x9c0 [ 371.102492][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 371.108704][ C0] __dev_queue_xmit+0x2b15/0x3650 [ 371.113719][ C0] ? ndisc_constructor+0x1a5/0xb40 [ 371.118821][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 371.124077][ C0] ? ip6_finish_output2+0x1034/0x2520 [ 371.129418][ C0] ? __kasan_check_read+0x11/0x20 [ 371.134422][ C0] ? lock_downgrade+0x920/0x920 [ 371.139262][ C0] dev_queue_xmit+0x18/0x20 [ 371.143736][ C0] ? dev_queue_xmit+0x18/0x20 [ 371.148397][ C0] neigh_resolve_output+0x5a5/0x970 [ 371.153565][ C0] ip6_finish_output2+0x1034/0x2520 [ 371.158732][ C0] ? ip6_mtu+0x2e6/0x460 [ 371.162948][ C0] ? ip6_forward_finish+0x530/0x530 [ 371.168115][ C0] ? lock_downgrade+0x920/0x920 [ 371.172942][ C0] ? ip6_mtu+0x16f/0x460 [ 371.177158][ C0] __ip6_finish_output+0x444/0xa50 [ 371.182239][ C0] ? __ip6_finish_output+0x444/0xa50 [ 371.187496][ C0] ip6_finish_output+0x38/0x1f0 [ 371.192321][ C0] ip6_output+0x235/0x7c0 [ 371.196623][ C0] ? ip6_finish_output+0x1f0/0x1f0 [ 371.201705][ C0] ? __ip6_finish_output+0xa50/0xa50 [ 371.206986][ C0] ? ndisc_send_skb+0x803/0x1450 [ 371.212008][ C0] ndisc_send_skb+0xf29/0x1450 [ 371.216752][ C0] ? nf_hook.constprop.0+0x560/0x560 [ 371.222038][ C0] ? skb_set_owner_w+0x21b/0x320 [ 371.226946][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 371.232657][ C0] ndisc_send_ns+0x3a9/0x850 [ 371.237228][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 371.243437][ C0] ? ndisc_netdev_event+0x4e0/0x4e0 [ 371.248605][ C0] ? addrconf_dad_work+0xac4/0x1150 [ 371.253774][ C0] ? trace_hardirqs_on+0x67/0x240 [ 371.258767][ C0] ? addrconf_dad_work+0xac4/0x1150 [ 371.263933][ C0] addrconf_dad_work+0xb88/0x1150 [ 371.268947][ C0] ? addrconf_dad_completed+0xbb0/0xbb0 [ 371.274465][ C0] ? lock_acquire+0x190/0x410 [ 371.279120][ C0] ? trace_hardirqs_on+0x67/0x240 [ 371.284120][ C0] process_one_work+0x9af/0x1740 [ 371.289044][ C0] ? pwq_dec_nr_in_flight+0x320/0x320 [ 371.294386][ C0] ? lock_acquire+0x190/0x410 [ 371.299049][ C0] worker_thread+0x98/0xe40 [ 371.303531][ C0] kthread+0x361/0x430 [ 371.307571][ C0] ? process_one_work+0x1740/0x1740 [ 371.312738][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 371.318988][ C0] ret_from_fork+0x24/0x30