[ 64.390272][ T26] audit: type=1800 audit(1568325129.583:27): pid=9773 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0
[ 64.426922][ T26] audit: type=1800 audit(1568325129.673:28): pid=9773 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[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 65.010312][ T26] audit: type=1800 audit(1568325130.253:29): pid=9773 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
[ 65.040155][ T26] audit: type=1800 audit(1568325130.263:30): pid=9773 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 '10.128.0.194' (ECDSA) to the list of known hosts.
syzkaller login: [ 78.479889][ T9926] IPVS: ftp: loaded support on port[0] = 21
[ 78.522206][ T9926] chnl_net:caif_netlink_parms(): no params data found
[ 78.544816][ T9926] bridge0: port 1(bridge_slave_0) entered blocking state
[ 78.551902][ T9926] bridge0: port 1(bridge_slave_0) entered disabled state
[ 78.559463][ T9926] device bridge_slave_0 entered promiscuous mode
[ 78.566657][ T9926] bridge0: port 2(bridge_slave_1) entered blocking state
[ 78.573758][ T9926] bridge0: port 2(bridge_slave_1) entered disabled state
[ 78.581187][ T9926] device bridge_slave_1 entered promiscuous mode
[ 78.594613][ T9926] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 78.604672][ T9926] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 78.619590][ T9926] team0: Port device team_slave_0 added
[ 78.626376][ T9926] team0: Port device team_slave_1 added
[ 78.704759][ T9926] device hsr_slave_0 entered promiscuous mode
[ 78.773731][ T9926] device hsr_slave_1 entered promiscuous mode
[ 78.839285][ T9926] bridge0: port 2(bridge_slave_1) entered blocking state
[ 78.846373][ T9926] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 78.853690][ T9926] bridge0: port 1(bridge_slave_0) entered blocking state
[ 78.860718][ T9926] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 78.884434][ T9926] 8021q: adding VLAN 0 to HW filter on device bond0
[ 78.895405][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 78.903168][ T3516] bridge0: port 1(bridge_slave_0) entered disabled state
[ 78.911085][ T3516] bridge0: port 2(bridge_slave_1) entered disabled state
[ 78.918676][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 78.928582][ T9926] 8021q: adding VLAN 0 to HW filter on device team0
[ 78.937616][ T2846] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 78.946012][ T2846] bridge0: port 1(bridge_slave_0) entered blocking state
[ 78.953027][ T2846] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 78.971481][ T9926] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
[ 78.981948][ T9926] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[ 78.993806][ T9928] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 79.002123][ T9928] bridge0: port 2(bridge_slave_1) entered blocking state
[ 79.009192][ T9928] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 79.016966][ T9928] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 79.025415][ T9928] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
executing program
[ 79.034225][ T9928] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 79.042266][ T9928] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 79.050406][ T9928] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 79.057865][ T9928] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 79.071193][ T9926] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 184.283193][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU
[ 184.289823][ C1] rcu: 1-...!: (1 GPs behind) idle=b82/0/0x3 softirq=10147/10148 fqs=4
[ 184.298208][ C1] (t=10500 jiffies g=9257 q=91)
[ 184.303126][ C1] rcu: rcu_preempt kthread starved for 10492 jiffies! g9257 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
[ 184.314371][ C1] rcu: RCU grace-period kthread stack dump:
[ 184.320239][ C1] rcu_preempt I29520 10 2 0x80004000
[ 184.326552][ C1] Call Trace:
[ 184.329835][ C1] __schedule+0x755/0x1580
[ 184.334246][ C1] ? __sched_text_start+0x8/0x8
[ 184.339083][ C1] schedule+0xd9/0x260
[ 184.343132][ C1] schedule_timeout+0x486/0xc50
[ 184.347965][ C1] ? rwlock_bug.part.0+0x90/0x90
[ 184.352883][ C1] ? usleep_range+0x170/0x170
[ 184.357623][ C1] ? trace_hardirqs_on+0x67/0x240
[ 184.362636][ C1] ? __kasan_check_read+0x11/0x20
[ 184.367642][ C1] ? __next_timer_interrupt+0x1a0/0x1a0
[ 184.373165][ C1] ? swake_up_one+0x60/0x60
[ 184.377650][ C1] rcu_gp_kthread+0x9b2/0x18c0
[ 184.382396][ C1] ? rcu_barrier+0x310/0x310
[ 184.386963][ C1] ? trace_hardirqs_on+0x67/0x240
[ 184.391967][ C1] ? __kasan_check_read+0x11/0x20
[ 184.396972][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 184.403203][ C1] ? __kthread_parkme+0x108/0x1c0
[ 184.408207][ C1] ? __kasan_check_read+0x11/0x20
[ 184.413211][ C1] kthread+0x361/0x430
[ 184.417259][ C1] ? rcu_barrier+0x310/0x310
[ 184.421827][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 184.428045][ C1] ret_from_fork+0x24/0x30
[ 184.432477][ C1] NMI backtrace for cpu 1
[ 184.436788][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0-rc8+ #0
[ 184.443868][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 184.453898][ C1] Call Trace:
[ 184.457158][ C1]
[ 184.459992][ C1] dump_stack+0x172/0x1f0
[ 184.464301][ C1] nmi_cpu_backtrace.cold+0x70/0xb2
[ 184.469477][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 184.475699][ C1] ? lapic_can_unplug_cpu.cold+0x45/0x45
[ 184.481310][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b
[ 184.487267][ C1] arch_trigger_cpumask_backtrace+0x14/0x20
[ 184.493138][ C1] rcu_dump_cpu_stacks+0x183/0x1cf
[ 184.498230][ C1] rcu_sched_clock_irq.cold+0x4dd/0xc13
[ 184.503755][ C1] ? raise_softirq+0x138/0x340
[ 184.508499][ C1] update_process_times+0x32/0x80
[ 184.513502][ C1] tick_sched_handle+0xa2/0x190
[ 184.518344][ C1] tick_sched_timer+0x53/0x140
[ 184.523089][ C1] __hrtimer_run_queues+0x364/0xe40
[ 184.528264][ C1] ? tick_sched_do_timer+0x1b0/0x1b0
[ 184.533529][ C1] ? hrtimer_start_range_ns+0xcb0/0xcb0
[ 184.539059][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 184.544756][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440
[ 184.550802][ C1] hrtimer_interrupt+0x314/0x770
[ 184.555724][ C1] smp_apic_timer_interrupt+0x160/0x610
[ 184.561260][ C1] apic_timer_interrupt+0xf/0x20
[ 184.566175][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50
[ 184.572227][ C1] Code: 89 25 34 4d 19 09 41 bc f4 ff ff ff e8 6d 9f e9 ff 48 c7 05 1e 4d 19 09 00 00 00 00 e9 77 e9 ff ff 90 90 90 90 90 90 90 90 90 <55> 48 89 e5 65 48 8b 04 25 40 fe 01 00 65 8b 15 04 89 8f 7e 81 e2
[ 184.591806][ C1] RSP: 0018:ffff8880ae908f20 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff13
[ 184.600196][ C1] RAX: ffff8880a0d027b8 RBX: ffff8880a0d027b8 RCX: ffffffff85c660f9
[ 184.608143][ C1] RDX: 0000000000000100 RSI: ffffffff85c65f86 RDI: ffff8880a0d027c0
[ 184.616093][ C1] RBP: ffff8880ae908f78 R08: ffff8880a98c6340 R09: 0000000000000000
[ 184.624046][ C1] R10: fffffbfff134afaf R11: ffff8880a98c6340 R12: dffffc0000000000
[ 184.631995][ C1] R13: ffff8880a0d024c0 R14: ffff8880a0d02850 R15: ffff8880a0d02850
[ 184.639954][ C1] ? apic_timer_interrupt+0xa/0x20
[ 184.645061][ C1] ? hhf_dequeue+0x679/0xa20
[ 184.649628][ C1] ? hhf_dequeue+0x506/0xa20
[ 184.654197][ C1] ? hhf_dequeue+0x7a/0xa20
[ 184.658684][ C1] __qdisc_run+0x1e7/0x19d0
[ 184.663170][ C1] ? dev_queue_xmit+0x18/0x20
[ 184.667832][ C1] __dev_queue_xmit+0x16f1/0x3650
[ 184.672834][ C1] ? __local_bh_enable_ip+0x15a/0x270
[ 184.678187][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 184.683454][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[ 184.689672][ C1] ? br_nf_post_routing+0xd73/0x1d30
[ 184.694941][ C1] ? br_forward_finish+0x235/0x400
[ 184.700036][ C1] ? __kasan_check_read+0x11/0x20
[ 184.705040][ C1] ? __dev_queue_xmit+0x2b15/0x3650
[ 184.710220][ C1] dev_queue_xmit+0x18/0x20
[ 184.714702][ C1] ? dev_queue_xmit+0x18/0x20
[ 184.719357][ C1] br_dev_queue_push_xmit+0x3f3/0x5c0
[ 184.724706][ C1] ? nf_hook_slow+0xf0/0x1e0
[ 184.729280][ C1] br_forward_finish+0xfa/0x400
[ 184.734121][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 184.739643][ C1] ? br_fdb_add.cold+0x8c/0x8c
[ 184.744383][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 184.750080][ C1] ? nf_hook_slow+0xf0/0x1e0
[ 184.754659][ C1] __br_forward+0x641/0xb00
[ 184.759141][ C1] ? br_forward_finish+0x400/0x400
[ 184.764244][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 184.769773][ C1] deliver_clone+0x61/0xc0
[ 184.774166][ C1] maybe_deliver+0x2c7/0x390
[ 184.778735][ C1] br_flood+0x13a/0x3d0
[ 184.782874][ C1] br_dev_xmit+0x98c/0x15a0
[ 184.787356][ C1] ? br_poll_controller+0x10/0x10
[ 184.792359][ C1] ? netif_skb_features+0x6c2/0xb90
[ 184.797537][ C1] ? netdev_set_sb_channel+0xe0/0xe0
[ 184.802801][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 184.809032][ C1] ? validate_xmit_xfrm+0x43c/0xf10
[ 184.814210][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 184.820439][ C1] dev_hard_start_xmit+0x1a3/0x9c0
[ 184.825533][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 184.831752][ C1] __dev_queue_xmit+0x2b15/0x3650
[ 184.836757][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 184.842024][ C1] ? __ip6_finish_output+0x444/0xa50
[ 184.847288][ C1] ? __kasan_check_read+0x11/0x20
[ 184.852295][ C1] ? ipv6_chk_mcast_addr+0x315/0x6f0
[ 184.857561][ C1] ? lock_downgrade+0x920/0x920
[ 184.862402][ C1] ? lock_acquire+0x190/0x410
[ 184.867068][ C1] ? __ip6_finish_output+0x444/0xa50
[ 184.872331][ C1] dev_queue_xmit+0x18/0x20
[ 184.876832][ C1] ? dev_queue_xmit+0x18/0x20
[ 184.881485][ C1] ip6_finish_output2+0xf58/0x2520
[ 184.886577][ C1] ? ip6_forward_finish+0x530/0x530
[ 184.891754][ C1] ? ip6_mtu+0x16f/0x460
[ 184.895976][ C1] __ip6_finish_output+0x444/0xa50
[ 184.901065][ C1] ? __ip6_finish_output+0x444/0xa50
[ 184.906328][ C1] ip6_finish_output+0x38/0x1f0
[ 184.911155][ C1] ip6_output+0x235/0x7c0
[ 184.915463][ C1] ? ip6_finish_output+0x1f0/0x1f0
[ 184.920554][ C1] ? __ip6_finish_output+0xa50/0xa50
[ 184.925832][ C1] ? icmp6_dst_alloc+0x432/0x660
[ 184.930748][ C1] mld_sendpack+0x9c7/0xea0
[ 184.935230][ C1] ? nf_hook.constprop.0+0x560/0x560
[ 184.940493][ C1] ? mld_ifc_timer_expire+0x437/0x8a0
[ 184.945844][ C1] ? __local_bh_enable_ip+0x15a/0x270
[ 184.951194][ C1] mld_ifc_timer_expire+0x449/0x8a0
[ 184.956399][ C1] call_timer_fn+0x1ac/0x780
[ 184.960970][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 184.966446][ C1] ? msleep_interruptible+0x150/0x150
[ 184.971804][ C1] ? trace_hardirqs_on+0x67/0x240
[ 184.976810][ C1] ? __kasan_check_read+0x11/0x20
[ 184.981818][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 184.987175][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 184.992534][ C1] run_timer_softirq+0x697/0x17a0
[ 184.997548][ C1] ? add_timer+0x930/0x930
[ 185.001950][ C1] ? kvm_clock_read+0x18/0x30
[ 185.006612][ C1] ? kvm_sched_clock_read+0x9/0x20
[ 185.011703][ C1] ? sched_clock+0x2e/0x50
[ 185.016123][ C1] ? sched_clock_cpu+0x1b/0x1b0
[ 185.020962][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 185.027186][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 185.033424][ C1] __do_softirq+0x262/0x98c
[ 185.037912][ C1] ? sched_clock_cpu+0x1b/0x1b0
[ 185.042752][ C1] irq_exit+0x19b/0x1e0
[ 185.046898][ C1] smp_apic_timer_interrupt+0x1a3/0x610
[ 185.052427][ C1] apic_timer_interrupt+0xf/0x20
[ 185.057340][ C1]
[ 185.060261][ C1] RIP: 0010:native_safe_halt+0xe/0x10
[ 185.065616][ C1] Code: 78 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 ee 32 22 fa e8 79
[ 185.085198][ C1] RSP: 0018:ffff8880a98dfd68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 185.093584][ C1] RAX: 1ffffffff11a5e8d RBX: ffff8880a98c6340 RCX: 1ffffffff134b5ee
[ 185.101536][ C1] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c
[ 185.109483][ C1] RBP: ffff8880a98dfd98 R08: ffff8880a98c6340 R09: ffffed1015318c69
[ 185.117431][ C1] R10: ffffed1015318c68 R11: ffff8880a98c6347 R12: dffffc0000000000
[ 185.125381][ C1] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000001
[ 185.133342][ C1] ? trace_hardirqs_on+0x5e/0x240
[ 185.138346][ C1] ? default_idle+0x1c/0x360
[ 185.142925][ C1] ? default_idle+0x4e/0x360
[ 185.147497][ C1] arch_cpu_idle+0xa/0x10
[ 185.151805][ C1] default_idle_call+0x84/0xb0
[ 185.156546][ C1] do_idle+0x413/0x760
[ 185.160594][ C1] ? arch_cpu_idle_exit+0x80/0x80
[ 185.165614][ C1] ? _raw_spin_unlock_irqrestore+0xa4/0xe0
[ 185.171420][ C1] ? complete+0x61/0x80
[ 185.175584][ C1] cpu_startup_entry+0x1b/0x20
[ 185.180360][ C1] start_secondary+0x315/0x430
[ 185.185114][ C1] ? set_cpu_sibling_map+0x2180/0x2180
[ 185.190565][ C1] secondary_startup_64+0xa4/0xb0