[ 68.729222][ T26] audit: type=1800 audit(1568451370.685:27): pid=9905 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0
[ 68.759366][ T26] audit: type=1800 audit(1568451370.685:28): pid=9905 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.
[ 69.398441][ T26] audit: type=1800 audit(1568451371.415:29): pid=9905 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
[ 69.418867][ T26] audit: type=1800 audit(1568451371.415:30): pid=9905 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 '10.128.0.193' (ECDSA) to the list of known hosts.
syzkaller login: [ 362.512864][T10059] IPVS: ftp: loaded support on port[0] = 21
[ 362.559255][T10059] chnl_net:caif_netlink_parms(): no params data found
[ 362.580749][T10059] bridge0: port 1(bridge_slave_0) entered blocking state
[ 362.588182][T10059] bridge0: port 1(bridge_slave_0) entered disabled state
[ 362.595674][T10059] device bridge_slave_0 entered promiscuous mode
[ 362.603732][T10059] bridge0: port 2(bridge_slave_1) entered blocking state
[ 362.611030][T10059] bridge0: port 2(bridge_slave_1) entered disabled state
[ 362.618531][T10059] device bridge_slave_1 entered promiscuous mode
[ 362.632575][T10059] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 362.642930][T10059] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 362.658718][T10059] team0: Port device team_slave_0 added
[ 362.665068][T10059] team0: Port device team_slave_1 added
[ 362.717882][T10059] device hsr_slave_0 entered promiscuous mode
[ 362.786369][T10059] device hsr_slave_1 entered promiscuous mode
[ 362.841389][T10059] bridge0: port 2(bridge_slave_1) entered blocking state
[ 362.848496][T10059] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 362.855854][T10059] bridge0: port 1(bridge_slave_0) entered blocking state
[ 362.862947][T10059] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 362.885915][T10059] 8021q: adding VLAN 0 to HW filter on device bond0
[ 362.897755][T10061] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 362.905766][T10061] bridge0: port 1(bridge_slave_0) entered disabled state
[ 362.913357][T10061] bridge0: port 2(bridge_slave_1) entered disabled state
[ 362.920994][T10061] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 362.931382][T10059] 8021q: adding VLAN 0 to HW filter on device team0
[ 362.940291][T10063] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 362.948601][T10063] bridge0: port 1(bridge_slave_0) entered blocking state
[ 362.955627][T10063] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 362.965283][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 362.974013][ T22] bridge0: port 2(bridge_slave_1) entered blocking state
[ 362.981183][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 362.994584][T10063] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 363.003197][T10063] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 363.013842][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 363.024368][T10063] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 363.034394][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
executing program
[ 363.045151][T10059] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 363.060375][T10059] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 468.106073][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 468.113963][ C1] (detected by 1, t=10502 jiffies, g=10037, q=87)
[ 468.120463][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294983942-4294973439), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 468.133815][ C1] kworker/1:1 R running task 27776 22 2 0x80004008
[ 468.141828][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 468.147971][ C1] Call Trace:
[ 468.151242][ C1]
[ 468.154109][ C1] sched_show_task.cold+0x2ed/0x34e
[ 468.159306][ C1] rcu_sched_clock_irq.cold+0xac8/0xc13
[ 468.164961][ C1] update_process_times+0x32/0x80
[ 468.169979][ C1] tick_sched_handle+0xa2/0x190
[ 468.174819][ C1] tick_sched_timer+0x53/0x140
[ 468.179663][ C1] __hrtimer_run_queues+0x364/0xe40
[ 468.185374][ C1] ? tick_sched_do_timer+0x1b0/0x1b0
[ 468.190753][ C1] ? hrtimer_start_range_ns+0xcb0/0xcb0
[ 468.196468][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 468.202288][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440
[ 468.208432][ C1] hrtimer_interrupt+0x314/0x770
[ 468.213426][ C1] smp_apic_timer_interrupt+0x160/0x610
[ 468.218965][ C1] apic_timer_interrupt+0xf/0x20
[ 468.223898][ C1] RIP: 0010:native_queued_spin_lock_slowpath+0x132/0x9f0
[ 468.230925][ C1] Code: 00 00 00 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 37 07 00 00 48 81 c4 98 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 f3 90 73 ff ff ff 8b 45 98 4c 8d 65 d8 3d 00 01 00 00 0f 84 e5 00 00
[ 468.250531][ C1] RSP: 0018:ffff8880ae909530 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
[ 468.259309][ C1] RAX: 0000000000000000 RBX: ffff8880a903c568 RCX: ffffffff81595c17
[ 468.268143][ C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880a903c568
[ 468.276107][ C1] RBP: ffff8880ae9095f0 R08: 1ffff110152078ad R09: ffffed10152078ae
[ 468.284160][ C1] R10: ffffed10152078ad R11: ffff8880a903c56b R12: 0000000000000001
[ 468.292125][ C1] R13: 0000000000000003 R14: ffffed10152078ad R15: 0000000000000001
[ 468.300112][ C1] ? apic_timer_interrupt+0xa/0x20
[ 468.305318][ C1] ? native_queued_spin_lock_slowpath+0xb7/0x9f0
[ 468.311799][ C1] ? debug_object_active_state+0x28a/0x350
[ 468.317890][ C1] ? __pv_queued_spin_lock_slowpath+0xd10/0xd10
[ 468.324131][ C1] ? debug_object_deactivate+0x320/0x320
[ 468.330102][ C1] ? mark_held_locks+0xf0/0xf0
[ 468.334983][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 468.341244][ C1] do_raw_spin_lock+0x20e/0x2e0
[ 468.346104][ C1] ? rwlock_bug.part.0+0x90/0x90
[ 468.351036][ C1] ? lock_acquire+0x190/0x410
[ 468.355787][ C1] ? __dev_queue_xmit+0x14b8/0x3650
[ 468.361423][ C1] _raw_spin_lock+0x37/0x40
[ 468.366107][ C1] ? __dev_queue_xmit+0x14b8/0x3650
[ 468.371486][ C1] __dev_queue_xmit+0x14b8/0x3650
[ 468.376767][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 468.382056][ C1] ? __ip6_finish_output+0x444/0xa50
[ 468.387413][ C1] ? ipv6_chk_mcast_addr+0x315/0x6f0
[ 468.392778][ C1] ? lock_downgrade+0x920/0x920
[ 468.397647][ C1] ? lock_acquire+0x190/0x410
[ 468.402329][ C1] ? __ip6_finish_output+0x444/0xa50
[ 468.407661][ C1] dev_queue_xmit+0x18/0x20
[ 468.412194][ C1] ? dev_queue_xmit+0x18/0x20
[ 468.416977][ C1] ip6_finish_output2+0xf58/0x2520
[ 468.422409][ C1] ? ip6_forward_finish+0x530/0x530
[ 468.427631][ C1] ? ip6_mtu+0x16f/0x460
[ 468.431945][ C1] __ip6_finish_output+0x444/0xa50
[ 468.437166][ C1] ? __ip6_finish_output+0x444/0xa50
[ 468.442796][ C1] ip6_finish_output+0x38/0x1f0
[ 468.447866][ C1] ip6_output+0x235/0x7c0
[ 468.452481][ C1] ? ip6_finish_output+0x1f0/0x1f0
[ 468.457621][ C1] ? __ip6_finish_output+0xa50/0xa50
[ 468.463442][ C1] ? icmp6_dst_alloc+0x432/0x660
[ 468.468372][ C1] mld_sendpack+0x9c7/0xea0
[ 468.472897][ C1] ? nf_hook.constprop.0+0x560/0x560
[ 468.478385][ C1] ? mld_ifc_timer_expire+0x437/0x8a0
[ 468.483878][ C1] ? __local_bh_enable_ip+0x15a/0x270
[ 468.489266][ C1] mld_ifc_timer_expire+0x449/0x8a0
[ 468.494474][ C1] call_timer_fn+0x1ac/0x780
[ 468.499141][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 468.505903][ C1] ? msleep_interruptible+0x150/0x150
[ 468.511354][ C1] ? trace_hardirqs_on+0x67/0x240
[ 468.516464][ C1] ? __kasan_check_read+0x11/0x20
[ 468.522048][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 468.527845][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 468.533479][ C1] run_timer_softirq+0x697/0x17a0
[ 468.538500][ C1] ? add_timer+0x930/0x930
[ 468.542936][ C1] ? kvm_clock_read+0x18/0x30
[ 468.547949][ C1] ? kvm_sched_clock_read+0x9/0x20
[ 468.553048][ C1] ? sched_clock+0x2e/0x50
[ 468.557471][ C1] ? sched_clock_cpu+0x1b/0x1b0
[ 468.562407][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 468.568846][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 468.575140][ C1] __do_softirq+0x262/0x98c
[ 468.579647][ C1] ? sched_clock_cpu+0x1b/0x1b0
[ 468.584589][ C1] irq_exit+0x19b/0x1e0
[ 468.588949][ C1] smp_apic_timer_interrupt+0x1a3/0x610
[ 468.594509][ C1] apic_timer_interrupt+0xf/0x20
[ 468.599469][ C1]
[ 468.602520][ C1] RIP: 0010:mutex_spin_on_owner+0x24c/0x330
[ 468.608518][ C1] Code: c3 be 08 00 00 00 4c 89 e7 e8 30 00 55 00 4c 89 e0 48 c1 e8 03 42 80 3c 38 00 0f 85 e1 00 00 00 49 8b 04 24 a8 01 75 91 f3 90 2a fe ff ff 0f 0b e8 38 dd 08 00 84 c0 0f 85 fa fd ff ff 48 c7
[ 468.628202][ C1] RSP: 0018:ffff8880a9a47a60 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[ 468.636690][ C1] RAX: 0000000000000000 RBX: ffff8880902b2040 RCX: 1ffffffff11a5ebc
[ 468.644654][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000
[ 468.652614][ C1] RBP: ffff8880a9a47aa0 R08: 1ffff110153474b8 R09: ffffed10153474b9
[ 468.660588][ C1] R10: ffffed10153474b8 R11: ffff8880a9a3a5c7 R12: ffffffff89790340
[ 468.668549][ C1] R13: ffff8880a9a3a5c0 R14: 0000000000000000 R15: dffffc0000000000
[ 468.676626][ C1] __mutex_lock+0x330/0x13c0
[ 468.681281][ C1] ? rtnl_lock+0x17/0x20
[ 468.685517][ C1] ? __kasan_check_read+0x11/0x20
[ 468.690534][ C1] ? mutex_lock_io_nested+0x1260/0x1260
[ 468.696224][ C1] ? __kasan_check_read+0x11/0x20
[ 468.701299][ C1] ? __kasan_check_write+0x14/0x20
[ 468.706417][ C1] ? lock_downgrade+0x920/0x920
[ 468.711271][ C1] ? rwlock_bug.part.0+0x90/0x90
[ 468.716237][ C1] ? debug_object_deactivate+0x104/0x320
[ 468.721944][ C1] ? trace_hardirqs_off+0x62/0x240
[ 468.727074][ C1] ? __kasan_check_read+0x11/0x20
[ 468.732102][ C1] mutex_lock_nested+0x16/0x20
[ 468.736999][ C1] ? mutex_lock_nested+0x16/0x20
[ 468.742095][ C1] rtnl_lock+0x17/0x20
[ 468.746179][ C1] addrconf_dad_work+0xad/0x1150
[ 468.751115][ C1] ? addrconf_dad_completed+0xbb0/0xbb0
[ 468.756677][ C1] ? lock_acquire+0x190/0x410
[ 468.761444][ C1] ? process_one_work+0x8c1/0x1740
[ 468.766631][ C1] ? trace_hardirqs_on+0x67/0x240
[ 468.771651][ C1] process_one_work+0x9af/0x1740
[ 468.776772][ C1] ? pwq_dec_nr_in_flight+0x320/0x320
[ 468.782396][ C1] ? lock_acquire+0x190/0x410
[ 468.787074][ C1] worker_thread+0x98/0xe40
[ 468.791971][ C1] kthread+0x361/0x430
[ 468.796242][ C1] ? process_one_work+0x1740/0x1740
[ 468.801816][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 468.808238][ C1] ret_from_fork+0x24/0x30
[ 468.812783][ C1] rcu: rcu_preempt kthread starved for 10572 jiffies! g10037 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
[ 468.824603][ C1] rcu: RCU grace-period kthread stack dump:
[ 468.830513][ C1] rcu_preempt R running task 29392 10 2 0x80004000
[ 468.838591][ C1] Call Trace:
[ 468.841963][ C1] __schedule+0x755/0x1580
[ 468.846412][ C1] ? __sched_text_start+0x8/0x8
[ 468.851281][ C1] schedule+0xd9/0x260
[ 468.855361][ C1] schedule_timeout+0x486/0xc50
[ 468.860291][ C1] ? rwlock_bug.part.0+0x90/0x90
[ 468.865222][ C1] ? usleep_range+0x170/0x170
[ 468.869918][ C1] ? trace_hardirqs_on+0x67/0x240
[ 468.874940][ C1] ? __kasan_check_read+0x11/0x20
[ 468.880343][ C1] ? __next_timer_interrupt+0x1a0/0x1a0
[ 468.885893][ C1] ? swake_up_one+0x60/0x60
[ 468.890388][ C1] ? trace_hardirqs_on+0x67/0x240
[ 468.896488][ C1] rcu_gp_kthread+0x9b2/0x18c0
[ 468.901288][ C1] ? rcu_barrier+0x310/0x310
[ 468.905886][ C1] ? trace_hardirqs_on+0x67/0x240
[ 468.911008][ C1] ? __kasan_check_read+0x11/0x20
[ 468.916045][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 468.922281][ C1] ? __kthread_parkme+0x108/0x1c0
[ 468.927610][ C1] ? __kasan_check_read+0x11/0x20
[ 468.932690][ C1] kthread+0x361/0x430
[ 468.936901][ C1] ? rcu_barrier+0x310/0x310
[ 468.941519][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 468.948126][ C1] ret_from_fork+0x24/0x30