[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] 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.
[ 65.492332][ T26] kauditd_printk_skb: 7 callbacks suppressed
[ 65.492343][ T26] audit: type=1800 audit(1568439257.047:29): pid=9732 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
[ 65.519552][ T26] audit: type=1800 audit(1568439257.047:30): pid=9732 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 '10.128.0.156' (ECDSA) to the list of known hosts.
syzkaller login: [ 84.184998][ T9887] IPVS: ftp: loaded support on port[0] = 21
[ 84.226129][ T9887] chnl_net:caif_netlink_parms(): no params data found
[ 84.247449][ T9887] bridge0: port 1(bridge_slave_0) entered blocking state
[ 84.255321][ T9887] bridge0: port 1(bridge_slave_0) entered disabled state
[ 84.263317][ T9887] device bridge_slave_0 entered promiscuous mode
[ 84.271068][ T9887] bridge0: port 2(bridge_slave_1) entered blocking state
[ 84.278180][ T9887] bridge0: port 2(bridge_slave_1) entered disabled state
[ 84.285796][ T9887] device bridge_slave_1 entered promiscuous mode
[ 84.299443][ T9887] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 84.310412][ T9887] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 84.325777][ T9887] team0: Port device team_slave_0 added
[ 84.332211][ T9887] team0: Port device team_slave_1 added
[ 84.387666][ T9887] device hsr_slave_0 entered promiscuous mode
[ 84.426729][ T9887] device hsr_slave_1 entered promiscuous mode
[ 84.471159][ T9887] bridge0: port 2(bridge_slave_1) entered blocking state
[ 84.478271][ T9887] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 84.485576][ T9887] bridge0: port 1(bridge_slave_0) entered blocking state
[ 84.492675][ T9887] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 84.516598][ T9887] 8021q: adding VLAN 0 to HW filter on device bond0
[ 84.528059][ T3573] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 84.536336][ T3573] bridge0: port 1(bridge_slave_0) entered disabled state
[ 84.553985][ T3573] bridge0: port 2(bridge_slave_1) entered disabled state
[ 84.561929][ T3573] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 84.572990][ T9887] 8021q: adding VLAN 0 to HW filter on device team0
[ 84.582041][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 84.590707][ T5] bridge0: port 1(bridge_slave_0) entered blocking state
[ 84.597935][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 84.616424][ T9890] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 84.624726][ T9890] bridge0: port 2(bridge_slave_1) entered blocking state
[ 84.631828][ T9890] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 84.640504][ T9890] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 84.649278][ T9890] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 84.657644][ T9890] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
executing program
[ 84.665980][ T9890] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 84.674741][ T9891] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 84.683472][ T9887] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 84.698321][ T9887] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 189.715679][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 189.722648][ C0] (detected by 0, t=10502 jiffies, g=9617, q=105)
[ 189.729128][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294956109-4294945606), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 189.742581][ C0] swapper/0 R running task 28456 0 0 0x80004008
[ 189.750550][ C0] Call Trace:
[ 189.753815][ C0]
[ 189.756659][ C0] sched_show_task.cold+0x2ed/0x34e
[ 189.761852][ C0] rcu_sched_clock_irq.cold+0xac8/0xc13
[ 189.767408][ C0] update_process_times+0x32/0x80
[ 189.772425][ C0] tick_sched_handle+0xa2/0x190
[ 189.777256][ C0] tick_sched_timer+0x53/0x140
[ 189.782018][ C0] __hrtimer_run_queues+0x364/0xe40
[ 189.787199][ C0] ? tick_sched_do_timer+0x1b0/0x1b0
[ 189.792469][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0
[ 189.797999][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 189.803724][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440
[ 189.810222][ C0] hrtimer_interrupt+0x314/0x770
[ 189.815166][ C0] smp_apic_timer_interrupt+0x160/0x610
[ 189.820697][ C0] apic_timer_interrupt+0xf/0x20
[ 189.825730][ C0] RIP: 0010:hhf_dequeue+0x5bc/0xa20
[ 189.830930][ C0] Code: e8 03 42 0f b6 14 20 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 3f 04 00 00 45 0f af b5 14 03 00 00 48 89 df 45 01 fe <44> 89 73 10 e8 bb cc 77 fd 31 ff 41 89 c6 89 c6 e8 ef 05 ac fb 45
[ 189.850632][ C0] RSP: 0018:ffff8880ae809538 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[ 189.859033][ C0] RAX: 0000000000000007 RBX: ffff8880921a6778 RCX: ffffffff85c66b39
[ 189.867087][ C0] RDX: 0000000000000000 RSI: ffffffff85c67006 RDI: ffff8880921a6778
[ 189.875048][ C0] RBP: ffff8880ae809588 R08: ffffffff88c7a1c0 R09: 0000000000000000
[ 189.883005][ C0] R10: fffffbfff134afaf R11: ffffffff88c7a1c0 R12: dffffc0000000000
[ 189.890957][ C0] R13: ffff8880921a6480 R14: 0000000000000000 R15: 0000000000000000
[ 189.898925][ C0] ? apic_timer_interrupt+0xa/0x20
[ 189.904030][ C0] ? hhf_dequeue+0xb9/0xa20
[ 189.908527][ C0] ? hhf_dequeue+0x586/0xa20
[ 189.913361][ C0] ? hhf_dequeue+0x586/0xa20
[ 189.917941][ C0] __qdisc_run+0x1e7/0x19d0
[ 189.922424][ C0] ? dev_queue_xmit+0x18/0x20
[ 189.927086][ C0] __dev_queue_xmit+0x16f1/0x3650
[ 189.932096][ C0] ? ndisc_constructor+0x1a5/0xb40
[ 189.937193][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 189.942475][ C0] ? ip6_finish_output2+0x1034/0x2520
[ 189.947835][ C0] ? __kasan_check_read+0x11/0x20
[ 189.952845][ C0] ? lock_downgrade+0x920/0x920
[ 189.957692][ C0] dev_queue_xmit+0x18/0x20
[ 189.962175][ C0] ? dev_queue_xmit+0x18/0x20
[ 189.966852][ C0] neigh_resolve_output+0x5a5/0x970
[ 189.972038][ C0] ip6_finish_output2+0x1034/0x2520
[ 189.977305][ C0] ? ip6_mtu+0x2e6/0x460
[ 189.982062][ C0] ? ip6_forward_finish+0x530/0x530
[ 189.987242][ C0] ? ip6_mtu+0x16f/0x460
[ 189.991479][ C0] __ip6_finish_output+0x444/0xa50
[ 189.996572][ C0] ? __ip6_finish_output+0x444/0xa50
[ 190.001839][ C0] ip6_finish_output+0x38/0x1f0
[ 190.006675][ C0] ip6_output+0x235/0x7c0
[ 190.010987][ C0] ? ip6_finish_output+0x1f0/0x1f0
[ 190.016100][ C0] ? __ip6_finish_output+0xa50/0xa50
[ 190.021385][ C0] ? icmp6_dst_alloc+0x432/0x660
[ 190.026317][ C0] mld_sendpack+0x9c7/0xea0
[ 190.030893][ C0] ? nf_hook.constprop.0+0x560/0x560
[ 190.036167][ C0] ? mld_ifc_timer_expire+0x437/0x8a0
[ 190.041520][ C0] ? __local_bh_enable_ip+0x15a/0x270
[ 190.046889][ C0] mld_ifc_timer_expire+0x449/0x8a0
[ 190.052073][ C0] call_timer_fn+0x1ac/0x780
[ 190.056648][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 190.062004][ C0] ? msleep_interruptible+0x150/0x150
[ 190.067358][ C0] ? trace_hardirqs_on+0x67/0x240
[ 190.072549][ C0] ? __kasan_check_read+0x11/0x20
[ 190.077563][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 190.082921][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 190.088280][ C0] run_timer_softirq+0x697/0x17a0
[ 190.093387][ C0] ? add_timer+0x930/0x930
[ 190.097798][ C0] ? kvm_clock_read+0x18/0x30
[ 190.102456][ C0] ? sched_clock+0x2e/0x50
[ 190.106858][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 190.111703][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 190.118101][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 190.124337][ C0] __do_softirq+0x262/0x98c
[ 190.128937][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 190.133792][ C0] irq_exit+0x19b/0x1e0
[ 190.137940][ C0] smp_apic_timer_interrupt+0x1a3/0x610
[ 190.143476][ C0] apic_timer_interrupt+0xf/0x20
[ 190.148392][ C0]
[ 190.151321][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 190.156693][ C0] Code: 88 63 6e fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 24 0b 4a 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 14 0b 4a 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 2e 23 22 fa e8 f9
[ 190.176452][ C0] RSP: 0018:ffffffff88c07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 190.184850][ C0] RAX: 1ffffffff11a5e8d RBX: ffffffff88c7a1c0 RCX: 1ffffffff134b5ee
[ 190.192893][ C0] RDX: dffffc0000000000 RSI: ffffffff8177f15e RDI: ffffffff873e150c
[ 190.200849][ C0] RBP: ffffffff88c07d18 R08: ffffffff88c7a1c0 R09: fffffbfff118f439
[ 190.208803][ C0] R10: fffffbfff118f438 R11: ffffffff88c7a1c7 R12: dffffc0000000000
[ 190.216755][ C0] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000000
[ 190.224733][ C0] ? trace_hardirqs_on+0x5e/0x240
[ 190.230010][ C0] ? default_idle+0x1c/0x360
[ 190.234625][ C0] ? default_idle+0x4e/0x360
[ 190.239197][ C0] arch_cpu_idle+0xa/0x10
[ 190.243518][ C0] default_idle_call+0x84/0xb0
[ 190.248264][ C0] do_idle+0x413/0x760
[ 190.252320][ C0] ? arch_cpu_idle_exit+0x80/0x80
[ 190.257323][ C0] ? trace_hardirqs_on+0x67/0x240
[ 190.262333][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 190.268556][ C0] ? debug_smp_processor_id+0x3c/0x214
[ 190.274005][ C0] cpu_startup_entry+0x1b/0x20
[ 190.278762][ C0] rest_init+0x245/0x37b
[ 190.283001][ C0] arch_call_rest_init+0xe/0x1b
[ 190.287929][ C0] start_kernel+0x912/0x951
[ 190.292422][ C0] ? mem_encrypt_init+0xb/0xb
[ 190.297082][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 190.303317][ C0] ? x86_family+0x41/0x50
[ 190.307658][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 190.313880][ C0] x86_64_start_reservations+0x29/0x2b
[ 190.319318][ C0] x86_64_start_kernel+0x77/0x7b
[ 190.324241][ C0] secondary_startup_64+0xa4/0xb0
[ 190.329257][ C0] rcu: rcu_preempt kthread starved for 10563 jiffies! g9617 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
[ 190.340330][ C0] rcu: RCU grace-period kthread stack dump:
[ 190.346311][ C0] rcu_preempt R running task 29520 10 2 0x80004000
[ 190.355232][ C0] Call Trace:
[ 190.358520][ C0] __schedule+0x755/0x1580
[ 190.362926][ C0] ? __sched_text_start+0x8/0x8
[ 190.367759][ C0] schedule+0xd9/0x260
[ 190.371812][ C0] schedule_timeout+0x486/0xc50
[ 190.376644][ C0] ? rwlock_bug.part.0+0x90/0x90
[ 190.381563][ C0] ? usleep_range+0x170/0x170
[ 190.386218][ C0] ? trace_hardirqs_on+0x67/0x240
[ 190.391223][ C0] ? __kasan_check_read+0x11/0x20
[ 190.396231][ C0] ? __next_timer_interrupt+0x1a0/0x1a0
[ 190.402191][ C0] ? swake_up_one+0x60/0x60
[ 190.406681][ C0] ? trace_hardirqs_on+0x67/0x240
[ 190.411688][ C0] rcu_gp_kthread+0x9b2/0x18c0
[ 190.416435][ C0] ? rcu_barrier+0x310/0x310
[ 190.421015][ C0] ? trace_hardirqs_on+0x67/0x240
[ 190.426019][ C0] ? __kasan_check_read+0x11/0x20
[ 190.431032][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 190.437253][ C0] ? __kthread_parkme+0x108/0x1c0
[ 190.442266][ C0] ? __kasan_check_read+0x11/0x20
[ 190.447278][ C0] kthread+0x361/0x430
[ 190.451379][ C0] ? rcu_barrier+0x310/0x310
[ 190.456005][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 190.462240][ C0] ret_from_fork+0x24/0x30