[....] 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.
[ 61.300015][ T26] kauditd_printk_skb: 7 callbacks suppressed
[ 61.300025][ T26] audit: type=1800 audit(1568251740.468:29): pid=9674 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
[ 61.334907][ T26] audit: type=1800 audit(1568251740.468:30): pid=9674 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 '10.128.0.139' (ECDSA) to the list of known hosts.
syzkaller login: [ 71.318238][ T9826] IPVS: ftp: loaded support on port[0] = 21
[ 71.358856][ T9826] chnl_net:caif_netlink_parms(): no params data found
[ 71.379408][ T9826] bridge0: port 1(bridge_slave_0) entered blocking state
[ 71.386535][ T9826] bridge0: port 1(bridge_slave_0) entered disabled state
[ 71.394127][ T9826] device bridge_slave_0 entered promiscuous mode
[ 71.401364][ T9826] bridge0: port 2(bridge_slave_1) entered blocking state
[ 71.408431][ T9826] bridge0: port 2(bridge_slave_1) entered disabled state
[ 71.416061][ T9826] device bridge_slave_1 entered promiscuous mode
[ 71.429171][ T9826] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 71.439946][ T9826] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 71.455069][ T9826] team0: Port device team_slave_0 added
[ 71.461903][ T9826] team0: Port device team_slave_1 added
[ 71.540119][ T9826] device hsr_slave_0 entered promiscuous mode
[ 71.608922][ T9826] device hsr_slave_1 entered promiscuous mode
[ 71.683352][ T9826] bridge0: port 2(bridge_slave_1) entered blocking state
[ 71.690451][ T9826] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 71.697719][ T9826] bridge0: port 1(bridge_slave_0) entered blocking state
[ 71.704823][ T9826] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 71.728834][ T9826] 8021q: adding VLAN 0 to HW filter on device bond0
[ 71.738446][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 71.757885][ T22] bridge0: port 1(bridge_slave_0) entered disabled state
[ 71.766067][ T22] bridge0: port 2(bridge_slave_1) entered disabled state
[ 71.774167][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 71.783729][ T9826] 8021q: adding VLAN 0 to HW filter on device team0
[ 71.792825][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 71.801421][ T2836] bridge0: port 1(bridge_slave_0) entered blocking state
[ 71.808487][ T2836] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 71.817739][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 71.826066][ T22] bridge0: port 2(bridge_slave_1) entered blocking state
[ 71.833183][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 71.846482][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 71.855401][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 71.865182][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 71.875537][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
executing program
[ 71.885850][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 71.894955][ T9826] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 71.909440][ T9826] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 176.928551][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU
[ 176.935193][ C1] rcu: 1-...!: (10500 ticks this GP) idle=02e/0/0x3 softirq=9985/9985 fqs=0
[ 176.944017][ C1] (t=10500 jiffies g=9013 q=42)
[ 176.948935][ C1] rcu: rcu_preempt kthread starved for 10500 jiffies! g9013 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
[ 176.960209][ C1] rcu: RCU grace-period kthread stack dump:
[ 176.966094][ C1] rcu_preempt I29520 10 2 0x80004000
[ 176.972412][ C1] Call Trace:
[ 176.975693][ C1] __schedule+0x755/0x1580
[ 176.980093][ C1] ? __sched_text_start+0x8/0x8
[ 176.984929][ C1] schedule+0xd9/0x260
[ 176.988990][ C1] schedule_timeout+0x486/0xc50
[ 176.993833][ C1] ? rwlock_bug.part.0+0x90/0x90
[ 176.998764][ C1] ? usleep_range+0x170/0x170
[ 177.003417][ C1] ? trace_hardirqs_on+0x67/0x240
[ 177.008419][ C1] ? __kasan_check_read+0x11/0x20
[ 177.013425][ C1] ? __next_timer_interrupt+0x1a0/0x1a0
[ 177.020968][ C1] ? swake_up_one+0x60/0x60
[ 177.025456][ C1] ? trace_hardirqs_on+0x67/0x240
[ 177.030477][ C1] rcu_gp_kthread+0x9b2/0x18c0
[ 177.035235][ C1] ? rcu_barrier+0x310/0x310
[ 177.039804][ C1] ? trace_hardirqs_on+0x67/0x240
[ 177.044807][ C1] ? __kasan_check_read+0x11/0x20
[ 177.049813][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 177.056034][ C1] ? __kthread_parkme+0x108/0x1c0
[ 177.061046][ C1] ? __kasan_check_read+0x11/0x20
[ 177.066058][ C1] kthread+0x361/0x430
[ 177.070126][ C1] ? rcu_barrier+0x310/0x310
[ 177.074718][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 177.080950][ C1] ret_from_fork+0x24/0x30
[ 177.085377][ C1] NMI backtrace for cpu 1
[ 177.089692][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0-rc8+ #0
[ 177.096774][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 177.106815][ C1] Call Trace:
[ 177.110080][ C1]
[ 177.112933][ C1] dump_stack+0x172/0x1f0
[ 177.117259][ C1] nmi_cpu_backtrace.cold+0x70/0xb2
[ 177.122449][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 177.128679][ C1] ? lapic_can_unplug_cpu.cold+0x45/0x45
[ 177.134289][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b
[ 177.140251][ C1] arch_trigger_cpumask_backtrace+0x14/0x20
[ 177.146123][ C1] rcu_dump_cpu_stacks+0x183/0x1cf
[ 177.151214][ C1] rcu_sched_clock_irq.cold+0x4dd/0xc13
[ 177.156737][ C1] ? raise_softirq+0x138/0x340
[ 177.161483][ C1] update_process_times+0x32/0x80
[ 177.166500][ C1] tick_sched_handle+0xa2/0x190
[ 177.171330][ C1] tick_sched_timer+0x53/0x140
[ 177.176075][ C1] __hrtimer_run_queues+0x364/0xe40
[ 177.181251][ C1] ? tick_sched_do_timer+0x1b0/0x1b0
[ 177.186516][ C1] ? hrtimer_start_range_ns+0xcb0/0xcb0
[ 177.192044][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 177.197740][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440
[ 177.203796][ C1] hrtimer_interrupt+0x314/0x770
[ 177.208721][ C1] smp_apic_timer_interrupt+0x160/0x610
[ 177.214269][ C1] apic_timer_interrupt+0xf/0x20
[ 177.219198][ C1] RIP: 0010:__list_del_entry_valid+0x85/0xf5
[ 177.225170][ C1] Code: 0f 84 e1 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c4 0f 84 e2 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 53 49 8b 14 24 4c 39 f2 0f 85 99 00 00 00 49 8d 7d
[ 177.244755][ C1] RSP: 0018:ffff8880ae9095a0 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13
[ 177.253157][ C1] RAX: dffffc0000000000 RBX: ffff888091a139b8 RCX: ffffffff85c65b39
[ 177.261106][ C1] RDX: 1ffff1101234274a RSI: ffffffff85c66006 RDI: ffff888091a139c0
[ 177.269057][ C1] RBP: ffff8880ae9095b8 R08: ffff8880a98c6340 R09: 0000000000000000
[ 177.277007][ C1] R10: fffffbfff134afaf R11: ffff8880a98c6340 R12: ffff888091a13a50
[ 177.284963][ C1] R13: ffff888091a13a50 R14: ffff888091a139b8 R15: 0000000000000000
[ 177.292925][ C1] ? apic_timer_interrupt+0xa/0x20
[ 177.298017][ C1] ? hhf_dequeue+0xb9/0xa20
[ 177.302511][ C1] ? hhf_dequeue+0x586/0xa20
[ 177.307085][ C1] hhf_dequeue+0x5c5/0xa20
[ 177.311483][ C1] __qdisc_run+0x1e7/0x19d0
[ 177.315969][ C1] ? dev_queue_xmit+0x18/0x20
[ 177.320631][ C1] __dev_queue_xmit+0x16f1/0x3650
[ 177.325649][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 177.330916][ C1] ? __ip6_finish_output+0x444/0xa50
[ 177.336179][ C1] ? ipv6_chk_mcast_addr+0x315/0x6f0
[ 177.341448][ C1] ? lock_downgrade+0x920/0x920
[ 177.346282][ C1] ? lock_acquire+0x190/0x410
[ 177.350936][ C1] ? __ip6_finish_output+0x444/0xa50
[ 177.356212][ C1] dev_queue_xmit+0x18/0x20
[ 177.360694][ C1] ? dev_queue_xmit+0x18/0x20
[ 177.365348][ C1] ip6_finish_output2+0xf58/0x2520
[ 177.370439][ C1] ? ip6_forward_finish+0x530/0x530
[ 177.375624][ C1] ? ip6_mtu+0x16f/0x460
[ 177.379847][ C1] __ip6_finish_output+0x444/0xa50
[ 177.384948][ C1] ? __ip6_finish_output+0x444/0xa50
[ 177.390232][ C1] ip6_finish_output+0x38/0x1f0
[ 177.395154][ C1] ip6_output+0x235/0x7c0
[ 177.399470][ C1] ? ip6_finish_output+0x1f0/0x1f0
[ 177.404561][ C1] ? __ip6_finish_output+0xa50/0xa50
[ 177.409827][ C1] ? icmp6_dst_alloc+0x432/0x660
[ 177.414759][ C1] mld_sendpack+0x9c7/0xea0
[ 177.419245][ C1] ? nf_hook.constprop.0+0x560/0x560
[ 177.424516][ C1] ? mld_ifc_timer_expire+0x437/0x8a0
[ 177.429880][ C1] ? __local_bh_enable_ip+0x15a/0x270
[ 177.435233][ C1] mld_ifc_timer_expire+0x449/0x8a0
[ 177.440416][ C1] call_timer_fn+0x1ac/0x780
[ 177.444999][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 177.450363][ C1] ? msleep_interruptible+0x150/0x150
[ 177.455714][ C1] ? trace_hardirqs_on+0x67/0x240
[ 177.460719][ C1] ? __kasan_check_read+0x11/0x20
[ 177.465738][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 177.471088][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 177.476440][ C1] run_timer_softirq+0x697/0x17a0
[ 177.481448][ C1] ? add_timer+0x930/0x930
[ 177.485842][ C1] ? kvm_clock_read+0x18/0x30
[ 177.490509][ C1] ? kvm_sched_clock_read+0x9/0x20
[ 177.495623][ C1] ? sched_clock+0x2e/0x50
[ 177.500021][ C1] ? sched_clock_cpu+0x1b/0x1b0
[ 177.504854][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 177.511075][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 177.517299][ C1] __do_softirq+0x262/0x98c
[ 177.521784][ C1] ? sched_clock_cpu+0x1b/0x1b0
[ 177.526617][ C1] irq_exit+0x19b/0x1e0
[ 177.530765][ C1] smp_apic_timer_interrupt+0x1a3/0x610
[ 177.536298][ C1] apic_timer_interrupt+0xf/0x20
[ 177.541209][ C1]
[ 177.544142][ C1] RIP: 0010:native_safe_halt+0xe/0x10
[ 177.549508][ C1] Code: 38 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 39
[ 177.569096][ C1] RSP: 0018:ffff8880a98dfd68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 177.577499][ C1] RAX: 1ffffffff11a5e8d RBX: ffff8880a98c6340 RCX: 1ffffffff134b5ee
[ 177.585464][ C1] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c
[ 177.593431][ C1] RBP: ffff8880a98dfd98 R08: ffff8880a98c6340 R09: ffffed1015318c69
[ 177.601382][ C1] R10: ffffed1015318c68 R11: ffff8880a98c6347 R12: dffffc0000000000
[ 177.609353][ C1] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000001
[ 177.617604][ C1] ? trace_hardirqs_on+0x5e/0x240
[ 177.622611][ C1] ? default_idle+0x1c/0x360
[ 177.627200][ C1] ? default_idle+0x4e/0x360
[ 177.631773][ C1] arch_cpu_idle+0xa/0x10
[ 177.636103][ C1] default_idle_call+0x84/0xb0
[ 177.640844][ C1] do_idle+0x413/0x760
[ 177.644907][ C1] ? arch_cpu_idle_exit+0x80/0x80
[ 177.649914][ C1] cpu_startup_entry+0x1b/0x20
[ 177.654655][ C1] start_secondary+0x315/0x430
[ 177.659406][ C1] ? set_cpu_sibling_map+0x2180/0x2180
[ 177.664846][ C1] secondary_startup_64+0xa4/0xb0