[....] 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.
[ 67.208052][ T26] kauditd_printk_skb: 7 callbacks suppressed
[ 67.208062][ T26] audit: type=1800 audit(1568330885.063:29): pid=9747 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
[ 67.241531][ T26] audit: type=1800 audit(1568330885.063:30): pid=9747 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 '10.128.0.122' (ECDSA) to the list of known hosts.
syzkaller login: [ 76.047885][ T9901] IPVS: ftp: loaded support on port[0] = 21
[ 76.092535][ T9901] chnl_net:caif_netlink_parms(): no params data found
[ 76.115143][ T9901] bridge0: port 1(bridge_slave_0) entered blocking state
[ 76.122504][ T9901] bridge0: port 1(bridge_slave_0) entered disabled state
[ 76.130351][ T9901] device bridge_slave_0 entered promiscuous mode
[ 76.137763][ T9901] bridge0: port 2(bridge_slave_1) entered blocking state
[ 76.144952][ T9901] bridge0: port 2(bridge_slave_1) entered disabled state
[ 76.152526][ T9901] device bridge_slave_1 entered promiscuous mode
[ 76.168078][ T9901] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 76.178474][ T9901] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 76.194441][ T9901] team0: Port device team_slave_0 added
[ 76.201219][ T9901] team0: Port device team_slave_1 added
[ 76.246082][ T9901] device hsr_slave_0 entered promiscuous mode
[ 76.304687][ T9901] device hsr_slave_1 entered promiscuous mode
[ 76.389768][ T9901] bridge0: port 2(bridge_slave_1) entered blocking state
[ 76.397569][ T9901] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 76.405212][ T9901] bridge0: port 1(bridge_slave_0) entered blocking state
[ 76.412409][ T9901] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 76.438785][ T9901] 8021q: adding VLAN 0 to HW filter on device bond0
[ 76.450846][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 76.459959][ T12] bridge0: port 1(bridge_slave_0) entered disabled state
[ 76.468210][ T12] bridge0: port 2(bridge_slave_1) entered disabled state
[ 76.476091][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 76.487173][ T9901] 8021q: adding VLAN 0 to HW filter on device team0
[ 76.497362][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 76.506240][ T17] bridge0: port 1(bridge_slave_0) entered blocking state
[ 76.513633][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 76.532341][ T9901] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
[ 76.543494][ T9901] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[ 76.555941][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 76.564588][ T12] bridge0: port 2(bridge_slave_1) entered blocking state
[ 76.571744][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 76.580846][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 76.589355][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 76.597719][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 76.606065][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 76.614278][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 76.621778][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
executing program
[ 76.635752][ T9901] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 181.634208][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU
[ 181.640866][ C0] rcu: 0-...!: (10499 ticks this GP) idle=ea2/0/0x3 softirq=8858/8858 fqs=8
[ 181.649798][ C0] (t=10500 jiffies g=9397 q=100)
[ 181.654889][ C0] rcu: rcu_preempt kthread starved for 10484 jiffies! g9397 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
[ 181.666136][ C0] rcu: RCU grace-period kthread stack dump:
[ 181.673758][ C0] rcu_preempt I29320 10 2 0x80004000
[ 181.680104][ C0] Call Trace:
[ 181.683394][ C0] __schedule+0x755/0x1580
[ 181.687795][ C0] ? __sched_text_start+0x8/0x8
[ 181.692628][ C0] schedule+0xd9/0x260
[ 181.696681][ C0] schedule_timeout+0x486/0xc50
[ 181.701510][ C0] ? rwlock_bug.part.0+0x90/0x90
[ 181.706429][ C0] ? usleep_range+0x170/0x170
[ 181.711084][ C0] ? trace_hardirqs_on+0x67/0x240
[ 181.716090][ C0] ? __kasan_check_read+0x11/0x20
[ 181.721184][ C0] ? __next_timer_interrupt+0x1a0/0x1a0
[ 181.726723][ C0] ? swake_up_one+0x60/0x60
[ 181.731305][ C0] rcu_gp_kthread+0x9b2/0x18c0
[ 181.736056][ C0] ? rcu_barrier+0x310/0x310
[ 181.740626][ C0] ? trace_hardirqs_on+0x67/0x240
[ 181.745736][ C0] ? __kasan_check_read+0x11/0x20
[ 181.750754][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 181.757061][ C0] ? __kthread_parkme+0x108/0x1c0
[ 181.762066][ C0] ? __kasan_check_read+0x11/0x20
[ 181.767070][ C0] kthread+0x361/0x430
[ 181.771270][ C0] ? rcu_barrier+0x310/0x310
[ 181.775839][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 181.782062][ C0] ret_from_fork+0x24/0x30
[ 181.786491][ C0] NMI backtrace for cpu 0
[ 181.790805][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc8+ #0
[ 181.798109][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 181.808239][ C0] Call Trace:
[ 181.811505][ C0]
[ 181.814340][ C0] dump_stack+0x172/0x1f0
[ 181.818651][ C0] nmi_cpu_backtrace.cold+0x70/0xb2
[ 181.823832][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 181.830067][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45
[ 181.835696][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b
[ 181.841675][ C0] arch_trigger_cpumask_backtrace+0x14/0x20
[ 181.847585][ C0] rcu_dump_cpu_stacks+0x183/0x1cf
[ 181.852689][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13
[ 181.858251][ C0] ? raise_softirq+0x138/0x340
[ 181.863175][ C0] update_process_times+0x32/0x80
[ 181.868192][ C0] tick_sched_handle+0xa2/0x190
[ 181.873027][ C0] tick_sched_timer+0x53/0x140
[ 181.877785][ C0] __hrtimer_run_queues+0x364/0xe40
[ 181.882979][ C0] ? tick_sched_do_timer+0x1b0/0x1b0
[ 181.888253][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0
[ 181.893814][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 181.899524][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440
[ 181.905746][ C0] hrtimer_interrupt+0x314/0x770
[ 181.910781][ C0] smp_apic_timer_interrupt+0x160/0x610
[ 181.916310][ C0] apic_timer_interrupt+0xf/0x20
[ 181.921254][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x50
[ 181.927460][ C0] Code: 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 00 01 1f 00 48 8b 75 08 75 2b 8b 90 f0
[ 181.947138][ C0] RSP: 0018:ffff8880ae809528 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[ 181.955546][ C0] RAX: ffffffff88c7a1c0 RBX: ffff88809c66ddf8 RCX: ffffffff85c660f9
[ 181.963510][ C0] RDX: 0000000000000100 RSI: ffff88809c66de80 RDI: ffff88809c66de00
[ 181.971467][ C0] RBP: ffff8880ae809528 R08: ffffffff88c7a1c0 R09: 0000000000000000
[ 181.979420][ C0] R10: fffffbfff134afaf R11: ffffffff88c7a1c0 R12: dffffc0000000000
[ 181.987374][ C0] R13: ffff88809c66db00 R14: ffff88809c66de80 R15: ffff88809c66de90
[ 181.995351][ C0] ? apic_timer_interrupt+0xa/0x20
[ 182.000445][ C0] ? hhf_dequeue+0x679/0xa20
[ 182.005020][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 182.011247][ C0] hhf_dequeue+0x506/0xa20
[ 182.015994][ C0] __qdisc_run+0x1e7/0x19d0
[ 182.020911][ C0] ? dev_queue_xmit+0x18/0x20
[ 182.025576][ C0] __dev_queue_xmit+0x16f1/0x3650
[ 182.030593][ C0] ? ndisc_constructor+0x1a5/0xb40
[ 182.035685][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 182.040948][ C0] ? ip6_finish_output2+0x1034/0x2520
[ 182.046303][ C0] ? __kasan_check_read+0x11/0x20
[ 182.051312][ C0] ? lock_downgrade+0x920/0x920
[ 182.056162][ C0] dev_queue_xmit+0x18/0x20
[ 182.060643][ C0] ? dev_queue_xmit+0x18/0x20
[ 182.065300][ C0] neigh_resolve_output+0x5a5/0x970
[ 182.070480][ C0] ip6_finish_output2+0x1034/0x2520
[ 182.075671][ C0] ? ip6_forward_finish+0x530/0x530
[ 182.080853][ C0] ? ip6_mtu+0x16f/0x460
[ 182.085080][ C0] __ip6_finish_output+0x444/0xa50
[ 182.090172][ C0] ? __ip6_finish_output+0x444/0xa50
[ 182.095449][ C0] ip6_finish_output+0x38/0x1f0
[ 182.100295][ C0] ip6_output+0x235/0x7c0
[ 182.104608][ C0] ? ip6_finish_output+0x1f0/0x1f0
[ 182.109701][ C0] ? __ip6_finish_output+0xa50/0xa50
[ 182.114974][ C0] ? icmp6_dst_alloc+0x432/0x660
[ 182.119981][ C0] mld_sendpack+0x9c7/0xea0
[ 182.124468][ C0] ? nf_hook.constprop.0+0x560/0x560
[ 182.129811][ C0] ? mld_ifc_timer_expire+0x437/0x8a0
[ 182.135184][ C0] ? __local_bh_enable_ip+0x15a/0x270
[ 182.140544][ C0] mld_ifc_timer_expire+0x449/0x8a0
[ 182.145733][ C0] call_timer_fn+0x1ac/0x780
[ 182.150315][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 182.155793][ C0] ? msleep_interruptible+0x150/0x150
[ 182.161149][ C0] ? trace_hardirqs_on+0x67/0x240
[ 182.166276][ C0] ? __kasan_check_read+0x11/0x20
[ 182.171296][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 182.176653][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 182.182007][ C0] run_timer_softirq+0x697/0x17a0
[ 182.187017][ C0] ? add_timer+0x930/0x930
[ 182.191415][ C0] ? kvm_clock_read+0x18/0x30
[ 182.196078][ C0] ? kvm_sched_clock_read+0x9/0x20
[ 182.201169][ C0] ? sched_clock+0x2e/0x50
[ 182.205567][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 182.210407][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 182.216632][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 182.222854][ C0] __do_softirq+0x262/0x98c
[ 182.227525][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 182.232382][ C0] irq_exit+0x19b/0x1e0
[ 182.236522][ C0] smp_apic_timer_interrupt+0x1a3/0x610
[ 182.242559][ C0] apic_timer_interrupt+0xf/0x20
[ 182.247472][ C0]
[ 182.250398][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 182.255764][ C0] 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
[ 182.275347][ C0] RSP: 0018:ffffffff88c07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 182.283736][ C0] RAX: 1ffffffff11a5e8d RBX: ffffffff88c7a1c0 RCX: 1ffffffff134b5ee
[ 182.291689][ C0] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c
[ 182.299819][ C0] RBP: ffffffff88c07d18 R08: ffffffff88c7a1c0 R09: fffffbfff118f439
[ 182.307779][ C0] R10: fffffbfff118f438 R11: ffffffff88c7a1c7 R12: dffffc0000000000
[ 182.315734][ C0] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000000
[ 182.323720][ C0] ? trace_hardirqs_on+0x5e/0x240
[ 182.328725][ C0] ? default_idle+0x1c/0x360
[ 182.333305][ C0] ? default_idle+0x4e/0x360
[ 182.337879][ C0] arch_cpu_idle+0xa/0x10
[ 182.342188][ C0] default_idle_call+0x84/0xb0
[ 182.346934][ C0] do_idle+0x413/0x760
[ 182.350991][ C0] ? arch_cpu_idle_exit+0x80/0x80
[ 182.355994][ C0] ? trace_hardirqs_on+0x67/0x240
[ 182.361004][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 182.367247][ C0] ? debug_smp_processor_id+0x3c/0x214
[ 182.372689][ C0] cpu_startup_entry+0x1b/0x20
[ 182.377444][ C0] rest_init+0x245/0x37b
[ 182.381671][ C0] arch_call_rest_init+0xe/0x1b
[ 182.386523][ C0] start_kernel+0x912/0x951
[ 182.391006][ C0] ? mem_encrypt_init+0xb/0xb
[ 182.395679][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 182.402025][ C0] ? x86_family+0x41/0x50
[ 182.406443][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 182.412773][ C0] x86_64_start_reservations+0x29/0x2b
[ 182.418218][ C0] x86_64_start_kernel+0x77/0x7b
[ 182.423154][ C0] secondary_startup_64+0xa4/0xb0