[ 69.128957][ T26] audit: type=1800 audit(1568386270.932:27): pid=9851 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 69.165252][ T26] audit: type=1800 audit(1568386270.932:28): pid=9851 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 69.908139][ T26] audit: type=1800 audit(1568386271.752:29): pid=9851 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 69.928939][ T26] audit: type=1800 audit(1568386271.752:30): pid=9851 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.43' (ECDSA) to the list of known hosts. syzkaller login: [ 345.378471][T10004] IPVS: ftp: loaded support on port[0] = 21 [ 345.437542][T10004] chnl_net:caif_netlink_parms(): no params data found [ 345.459754][T10004] bridge0: port 1(bridge_slave_0) entered blocking state [ 345.467160][T10004] bridge0: port 1(bridge_slave_0) entered disabled state [ 345.474822][T10004] device bridge_slave_0 entered promiscuous mode [ 345.482488][T10004] bridge0: port 2(bridge_slave_1) entered blocking state [ 345.489956][T10004] bridge0: port 2(bridge_slave_1) entered disabled state [ 345.497925][T10004] device bridge_slave_1 entered promiscuous mode [ 345.512033][T10004] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 345.522367][T10004] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 345.540225][T10004] team0: Port device team_slave_0 added [ 345.547274][T10004] team0: Port device team_slave_1 added [ 345.602433][T10004] device hsr_slave_0 entered promiscuous mode [ 345.641200][T10004] device hsr_slave_1 entered promiscuous mode [ 345.705848][T10004] bridge0: port 2(bridge_slave_1) entered blocking state [ 345.712939][T10004] bridge0: port 2(bridge_slave_1) entered forwarding state [ 345.720235][T10004] bridge0: port 1(bridge_slave_0) entered blocking state [ 345.727409][T10004] bridge0: port 1(bridge_slave_0) entered forwarding state [ 345.751692][T10004] 8021q: adding VLAN 0 to HW filter on device bond0 [ 345.763313][T10007] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 345.782883][T10007] bridge0: port 1(bridge_slave_0) entered disabled state [ 345.791029][T10007] bridge0: port 2(bridge_slave_1) entered disabled state [ 345.798894][T10007] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 345.808975][T10004] 8021q: adding VLAN 0 to HW filter on device team0 [ 345.818516][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 345.827215][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 345.834842][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 345.844605][T10007] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 345.853853][T10007] bridge0: port 2(bridge_slave_1) entered blocking state [ 345.861087][T10007] bridge0: port 2(bridge_slave_1) entered forwarding state [ 345.879177][T10004] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 345.889938][T10004] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 345.902216][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 345.911478][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 345.919747][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 345.928317][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 345.937189][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 345.945164][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 345.959629][T10004] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 451.140582][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 451.147642][ C1] rcu: 1-...!: (1 GPs behind) idle=fce/0/0x3 softirq=10960/10961 fqs=9 [ 451.156270][ C1] (t=10500 jiffies g=10181 q=24) [ 451.162040][ C1] rcu: rcu_preempt kthread starved for 10482 jiffies! g10181 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 451.175799][ C1] rcu: RCU grace-period kthread stack dump: [ 451.182266][ C1] rcu_preempt R running task 29392 10 2 0x80004000 [ 451.191015][ C1] Call Trace: [ 451.194487][ C1] __schedule+0x755/0x1580 [ 451.199132][ C1] ? __sched_text_start+0x8/0x8 [ 451.204128][ C1] schedule+0xd9/0x260 [ 451.208551][ C1] schedule_timeout+0x486/0xc50 [ 451.213675][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 451.218862][ C1] ? usleep_range+0x170/0x170 [ 451.223826][ C1] ? trace_hardirqs_on+0x67/0x240 [ 451.229093][ C1] ? __kasan_check_read+0x11/0x20 [ 451.234298][ C1] ? __next_timer_interrupt+0x1a0/0x1a0 [ 451.239973][ C1] ? swake_up_one+0x60/0x60 [ 451.245271][ C1] rcu_gp_kthread+0x9b2/0x18c0 [ 451.250327][ C1] ? rcu_barrier+0x310/0x310 [ 451.255190][ C1] ? trace_hardirqs_on+0x67/0x240 [ 451.261024][ C1] ? __kasan_check_read+0x11/0x20 [ 451.266250][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 451.272735][ C1] ? __kthread_parkme+0x108/0x1c0 [ 451.278436][ C1] ? __kasan_check_read+0x11/0x20 [ 451.284478][ C1] kthread+0x361/0x430 [ 451.288784][ C1] ? rcu_barrier+0x310/0x310 [ 451.293778][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 451.301951][ C1] ret_from_fork+0x24/0x30 [ 451.307393][ C1] NMI backtrace for cpu 1 [ 451.311841][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0-rc8+ #0 [ 451.319241][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 451.330154][ C1] Call Trace: [ 451.333701][ C1] [ 451.337208][ C1] dump_stack+0x172/0x1f0 [ 451.341763][ C1] nmi_cpu_backtrace.cold+0x70/0xb2 [ 451.347367][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 451.354178][ C1] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 451.360366][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 451.367046][ C1] arch_trigger_cpumask_backtrace+0x14/0x20 [ 451.373579][ C1] rcu_dump_cpu_stacks+0x183/0x1cf [ 451.379347][ C1] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 451.385065][ C1] ? raise_softirq+0x138/0x340 [ 451.390458][ C1] update_process_times+0x32/0x80 [ 451.396519][ C1] tick_sched_handle+0xa2/0x190 [ 451.402137][ C1] tick_sched_timer+0x53/0x140 [ 451.407676][ C1] __hrtimer_run_queues+0x364/0xe40 [ 451.412986][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 451.418368][ C1] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 451.424777][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 451.431018][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 451.437711][ C1] hrtimer_interrupt+0x314/0x770 [ 451.442719][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 451.448578][ C1] apic_timer_interrupt+0xf/0x20 [ 451.454514][ C1] RIP: 0010:hhf_dequeue+0x552/0xa20 [ 451.460781][ C1] Code: ff ff 45 31 ff e9 b0 02 00 00 e8 79 15 ac fb 48 8d 43 f0 41 be 01 00 00 00 49 8d 95 c0 02 00 00 48 39 c2 74 34 e8 5e 15 ac fb <49> 8d bd ac 03 00 00 48 89 f8 48 c1 e8 03 42 0f b6 14 20 48 89 f8 [ 451.486026][ C1] RSP: 0018:ffff8880ae9095c8 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 [ 451.495425][ C1] RAX: ffff8880a98c6340 RBX: ffff888095015df8 RCX: ffffffff85c65b39 [ 451.503974][ C1] RDX: 0000000000000100 RSI: ffffffff85c65fd2 RDI: 0000000000000005 [ 451.512136][ C1] RBP: ffff8880ae909618 R08: ffff8880a98c6340 R09: 0000000000000000 [ 451.520853][ C1] R10: fffffbfff134afaf R11: ffff8880a98c6340 R12: dffffc0000000000 [ 451.529676][ C1] R13: ffff888095015b00 R14: 0000000000000001 R15: 0000000000000000 [ 451.538300][ C1] ? apic_timer_interrupt+0xa/0x20 [ 451.543536][ C1] ? hhf_dequeue+0xb9/0xa20 [ 451.548261][ C1] ? hhf_dequeue+0x552/0xa20 [ 451.553031][ C1] ? hhf_dequeue+0x552/0xa20 [ 451.558037][ C1] __qdisc_run+0x1e7/0x19d0 [ 451.562950][ C1] ? dev_queue_xmit+0x18/0x20 [ 451.568582][ C1] __dev_queue_xmit+0x16f1/0x3650 [ 451.574086][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 451.579685][ C1] ? __ip6_finish_output+0x444/0xa50 [ 451.586755][ C1] ? ipv6_chk_mcast_addr+0x315/0x6f0 [ 451.592756][ C1] ? lock_downgrade+0x920/0x920 [ 451.597755][ C1] ? lock_acquire+0x190/0x410 [ 451.602500][ C1] ? __ip6_finish_output+0x444/0xa50 [ 451.607963][ C1] dev_queue_xmit+0x18/0x20 [ 451.613308][ C1] ? dev_queue_xmit+0x18/0x20 [ 451.618262][ C1] ip6_finish_output2+0xf58/0x2520 [ 451.623735][ C1] ? ip6_forward_finish+0x530/0x530 [ 451.629427][ C1] ? ip6_mtu+0x16f/0x460 [ 451.633765][ C1] __ip6_finish_output+0x444/0xa50 [ 451.638873][ C1] ? __ip6_finish_output+0x444/0xa50 [ 451.644461][ C1] ip6_finish_output+0x38/0x1f0 [ 451.649875][ C1] ip6_output+0x235/0x7c0 [ 451.654346][ C1] ? ip6_finish_output+0x1f0/0x1f0 [ 451.660572][ C1] ? __ip6_finish_output+0xa50/0xa50 [ 451.666240][ C1] ? icmp6_dst_alloc+0x432/0x660 [ 451.671980][ C1] mld_sendpack+0x9c7/0xea0 [ 451.676664][ C1] ? nf_hook.constprop.0+0x560/0x560 [ 451.682652][ C1] ? mld_ifc_timer_expire+0x437/0x8a0 [ 451.689050][ C1] ? __local_bh_enable_ip+0x15a/0x270 [ 451.694723][ C1] mld_ifc_timer_expire+0x449/0x8a0 [ 451.700572][ C1] call_timer_fn+0x1ac/0x780 [ 451.705884][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 451.711629][ C1] ? msleep_interruptible+0x150/0x150 [ 451.717579][ C1] ? trace_hardirqs_on+0x67/0x240 [ 451.722931][ C1] ? __kasan_check_read+0x11/0x20 [ 451.728796][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 451.734831][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 451.740603][ C1] run_timer_softirq+0x697/0x17a0 [ 451.746431][ C1] ? add_timer+0x930/0x930 [ 451.751807][ C1] ? kvm_clock_read+0x18/0x30 [ 451.759232][ C1] ? kvm_sched_clock_read+0x9/0x20 [ 451.765066][ C1] ? sched_clock+0x2e/0x50 [ 451.769914][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 451.775135][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 451.782721][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 451.789342][ C1] __do_softirq+0x262/0x98c [ 451.796768][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 451.802892][ C1] irq_exit+0x19b/0x1e0 [ 451.808694][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 451.815401][ C1] apic_timer_interrupt+0xf/0x20 [ 451.821253][ C1] [ 451.824588][ C1] RIP: 0010:native_safe_halt+0xe/0x10 [ 451.831011][ C1] Code: b8 73 6e fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 24 1b 4a 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 14 1b 4a 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 2e 33 22 fa e8 b9 [ 451.853163][ C1] RSP: 0018:ffff8880a98dfd68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 451.862838][ C1] RAX: 1ffffffff11a5e8d RBX: ffff8880a98c6340 RCX: 1ffffffff134b5ee [ 451.871415][ C1] RDX: dffffc0000000000 RSI: ffffffff8177f18e RDI: ffffffff873e050c [ 451.880561][ C1] RBP: ffff8880a98dfd98 R08: ffff8880a98c6340 R09: ffffed1015318c69 [ 451.889726][ C1] R10: ffffed1015318c68 R11: ffff8880a98c6347 R12: dffffc0000000000 [ 451.898637][ C1] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000001 [ 451.911510][ C1] ? trace_hardirqs_on+0x5e/0x240 [ 451.918491][ C1] ? default_idle+0x1c/0x360 [ 451.931794][ C1] ? default_idle+0x4e/0x360 [ 451.939022][ C1] arch_cpu_idle+0xa/0x10 [ 451.946443][ C1] default_idle_call+0x84/0xb0 [ 451.955806][ C1] do_idle+0x413/0x760 [ 451.961192][ C1] ? arch_cpu_idle_exit+0x80/0x80 [ 451.969417][ C1] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 451.978940][ C1] ? complete+0x61/0x80 [ 451.986199][ C1] cpu_startup_entry+0x1b/0x20 [ 451.993434][ C1] start_secondary+0x315/0x430 [ 451.999279][ C1] ? set_cpu_sibling_map+0x2180/0x2180 [ 452.008198][ C1] secondary_startup_64+0xa4/0xb0