[....] 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.
[ 62.826214][ T26] kauditd_printk_skb: 7 callbacks suppressed
[ 62.826223][ T26] audit: type=1800 audit(1568269428.541:29): pid=9580 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
[ 62.859457][ T26] audit: type=1800 audit(1568269428.541:30): pid=9580 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 '10.128.0.22' (ECDSA) to the list of known hosts.
syzkaller login: [ 212.561439][T10066] IPVS: ftp: loaded support on port[0] = 21
[ 212.603014][T10066] chnl_net:caif_netlink_parms(): no params data found
[ 212.624640][T10066] bridge0: port 1(bridge_slave_0) entered blocking state
[ 212.632239][T10066] bridge0: port 1(bridge_slave_0) entered disabled state
[ 212.639807][T10066] device bridge_slave_0 entered promiscuous mode
[ 212.647119][T10066] bridge0: port 2(bridge_slave_1) entered blocking state
[ 212.654184][T10066] bridge0: port 2(bridge_slave_1) entered disabled state
[ 212.661857][T10066] device bridge_slave_1 entered promiscuous mode
[ 212.674726][T10066] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 212.685086][T10066] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 212.700558][T10066] team0: Port device team_slave_0 added
[ 212.707431][T10066] team0: Port device team_slave_1 added
[ 212.786668][T10066] device hsr_slave_0 entered promiscuous mode
[ 212.835591][T10066] device hsr_slave_1 entered promiscuous mode
[ 212.900116][T10066] bridge0: port 2(bridge_slave_1) entered blocking state
[ 212.907210][T10066] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 212.914468][T10066] bridge0: port 1(bridge_slave_0) entered blocking state
[ 212.921536][T10066] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 212.944987][T10066] 8021q: adding VLAN 0 to HW filter on device bond0
[ 212.954547][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 212.973451][ T12] bridge0: port 1(bridge_slave_0) entered disabled state
[ 212.981242][ T12] bridge0: port 2(bridge_slave_1) entered disabled state
[ 212.989295][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 212.998978][T10066] 8021q: adding VLAN 0 to HW filter on device team0
[ 213.007883][ T2846] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 213.016272][ T2846] bridge0: port 1(bridge_slave_0) entered blocking state
[ 213.023327][ T2846] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 213.032591][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 213.041393][ T12] bridge0: port 2(bridge_slave_1) entered blocking state
[ 213.048486][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 213.061615][ T2846] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 213.069970][ T2846] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 213.079583][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 213.090073][ T2846] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[ 213.100075][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 213.109431][T10066] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 213.122726][T10066] 8021q: adding VLAN 0 to HW filter on device batadv0
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[ 318.255164][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU
[ 318.261798][ C0] rcu: 0-...!: (10500 ticks this GP) idle=af6/0/0x3 softirq=9375/9375 fqs=0
[ 318.270630][ C0] (t=10501 jiffies g=9857 q=148)
[ 318.275635][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g9857 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
[ 318.286895][ C0] rcu: RCU grace-period kthread stack dump:
[ 318.292763][ C0] rcu_preempt I29392 10 2 0x80004000
[ 318.299073][ C0] Call Trace:
[ 318.302442][ C0] __schedule+0x755/0x1580
[ 318.306940][ C0] ? __sched_text_start+0x8/0x8
[ 318.311786][ C0] schedule+0xd9/0x260
[ 318.316095][ C0] schedule_timeout+0x486/0xc50
[ 318.320945][ C0] ? rwlock_bug.part.0+0x90/0x90
[ 318.325874][ C0] ? usleep_range+0x170/0x170
[ 318.330530][ C0] ? trace_hardirqs_on+0x67/0x240
[ 318.335536][ C0] ? __kasan_check_read+0x11/0x20
[ 318.340541][ C0] ? __next_timer_interrupt+0x1a0/0x1a0
[ 318.346065][ C0] ? swake_up_one+0x60/0x60
[ 318.350544][ C0] ? trace_hardirqs_on+0x67/0x240
[ 318.355550][ C0] rcu_gp_kthread+0x9b2/0x18c0
[ 318.360307][ C0] ? rcu_barrier+0x310/0x310
[ 318.364962][ C0] ? trace_hardirqs_on+0x67/0x240
[ 318.369978][ C0] ? __kasan_check_read+0x11/0x20
[ 318.374985][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 318.381217][ C0] ? __kthread_parkme+0x108/0x1c0
[ 318.386219][ C0] ? __kasan_check_read+0x11/0x20
[ 318.391223][ C0] kthread+0x361/0x430
[ 318.395289][ C0] ? rcu_barrier+0x310/0x310
[ 318.399857][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 318.406073][ C0] ret_from_fork+0x24/0x30
[ 318.410491][ C0] NMI backtrace for cpu 0
[ 318.414811][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc8+ #0
[ 318.421912][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 318.432395][ C0] Call Trace:
[ 318.435667][ C0]
[ 318.438578][ C0] dump_stack+0x172/0x1f0
[ 318.442902][ C0] nmi_cpu_backtrace.cold+0x70/0xb2
[ 318.448083][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 318.454307][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45
[ 318.459931][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b
[ 318.465994][ C0] arch_trigger_cpumask_backtrace+0x14/0x20
[ 318.471874][ C0] rcu_dump_cpu_stacks+0x183/0x1cf
[ 318.476968][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13
[ 318.482496][ C0] ? raise_softirq+0x138/0x340
[ 318.487258][ C0] update_process_times+0x32/0x80
[ 318.492266][ C0] tick_sched_handle+0xa2/0x190
[ 318.497100][ C0] tick_sched_timer+0x53/0x140
[ 318.501861][ C0] __hrtimer_run_queues+0x364/0xe40
[ 318.507043][ C0] ? tick_sched_do_timer+0x1b0/0x1b0
[ 318.512319][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0
[ 318.517963][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 318.523671][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440
[ 318.529719][ C0] hrtimer_interrupt+0x314/0x770
[ 318.534715][ C0] smp_apic_timer_interrupt+0x160/0x610
[ 318.540246][ C0] apic_timer_interrupt+0xf/0x20
[ 318.545170][ C0] RIP: 0010:__list_add_valid+0x19/0xa0
[ 318.550653][ C0] Code: e8 6c 48 6e fe eb 9e 90 90 90 90 90 90 90 90 90 90 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 55 49 89 fd 48 8d 7a 08 41 54 <49> 89 d4 48 89 fa 48 83 ec 08 48 c1 ea 03 80 3c 02 00 75 52 49 8b
[ 318.570323][ C0] RSP: 0018:ffff8880ae808f08 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[ 318.578723][ C0] RAX: dffffc0000000000 RBX: ffff888098014bf8 RCX: ffffffff85c66051
[ 318.586694][ C0] RDX: ffff888098014c90 RSI: ffff888098014c90 RDI: ffff888098014c98
[ 318.594646][ C0] RBP: ffff8880ae808f18 R08: ffffffff88c7a1c0 R09: 0000000000000000
[ 318.602596][ C0] R10: fffffbfff134afaf R11: ffffffff88c7a1c0 R12: dffffc0000000000
[ 318.610546][ C0] R13: ffff888098014bf8 R14: ffff888098014c98 R15: ffff888098014c90
[ 318.618504][ C0] ? apic_timer_interrupt+0xa/0x20
[ 318.623642][ C0] ? hhf_dequeue+0x5d1/0xa20
[ 318.628219][ C0] hhf_dequeue+0x66d/0xa20
[ 318.632696][ C0] __qdisc_run+0x1e7/0x19d0
[ 318.637219][ C0] ? dev_queue_xmit+0x18/0x20
[ 318.641890][ C0] __dev_queue_xmit+0x16f1/0x3650
[ 318.646905][ C0] ? __local_bh_enable_ip+0x15a/0x270
[ 318.653221][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 318.658510][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[ 318.664788][ C0] ? br_nf_post_routing+0xd73/0x1d30
[ 318.670105][ C0] ? br_forward_finish+0x235/0x400
[ 318.678511][ C0] ? __kasan_check_read+0x11/0x20
[ 318.683517][ C0] ? __dev_queue_xmit+0x2b15/0x3650
[ 318.688707][ C0] dev_queue_xmit+0x18/0x20
[ 318.693189][ C0] ? dev_queue_xmit+0x18/0x20
[ 318.697845][ C0] br_dev_queue_push_xmit+0x3f3/0x5c0
[ 318.703246][ C0] ? nf_hook_slow+0xf0/0x1e0
[ 318.707820][ C0] br_forward_finish+0xfa/0x400
[ 318.712649][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 318.718174][ C0] ? br_fdb_add.cold+0x8c/0x8c
[ 318.722925][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 318.728633][ C0] ? nf_hook_slow+0xf0/0x1e0
[ 318.733203][ C0] __br_forward+0x641/0xb00
[ 318.737686][ C0] ? br_forward_finish+0x400/0x400
[ 318.742777][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 318.748304][ C0] deliver_clone+0x61/0xc0
[ 318.752714][ C0] maybe_deliver+0x2c7/0x390
[ 318.757284][ C0] br_flood+0x13a/0x3d0
[ 318.761452][ C0] br_dev_xmit+0x98c/0x15a0
[ 318.765937][ C0] ? br_poll_controller+0x10/0x10
[ 318.770942][ C0] ? netif_skb_features+0x6c2/0xb90
[ 318.776160][ C0] ? netdev_set_sb_channel+0xe0/0xe0
[ 318.781429][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 318.787671][ C0] ? validate_xmit_xfrm+0x43c/0xf10
[ 318.792848][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 318.799072][ C0] dev_hard_start_xmit+0x1a3/0x9c0
[ 318.804226][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 318.810445][ C0] __dev_queue_xmit+0x2b15/0x3650
[ 318.815463][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 318.820761][ C0] ? __ip6_finish_output+0x444/0xa50
[ 318.826027][ C0] ? __kasan_check_read+0x11/0x20
[ 318.831053][ C0] ? ipv6_chk_mcast_addr+0x315/0x6f0
[ 318.836340][ C0] ? lock_downgrade+0x920/0x920
[ 318.841192][ C0] ? lock_acquire+0x190/0x410
[ 318.845847][ C0] ? __ip6_finish_output+0x444/0xa50
[ 318.851118][ C0] dev_queue_xmit+0x18/0x20
[ 318.855611][ C0] ? dev_queue_xmit+0x18/0x20
[ 318.860267][ C0] ip6_finish_output2+0xf58/0x2520
[ 318.865361][ C0] ? ip6_forward_finish+0x530/0x530
[ 318.870574][ C0] ? ip6_mtu+0x16f/0x460
[ 318.874801][ C0] __ip6_finish_output+0x444/0xa50
[ 318.879890][ C0] ? __ip6_finish_output+0x444/0xa50
[ 318.885157][ C0] ip6_finish_output+0x38/0x1f0
[ 318.889990][ C0] ip6_output+0x235/0x7c0
[ 318.894299][ C0] ? ip6_finish_output+0x1f0/0x1f0
[ 318.899389][ C0] ? __ip6_finish_output+0xa50/0xa50
[ 318.904651][ C0] ? icmp6_dst_alloc+0x432/0x660
[ 318.909569][ C0] mld_sendpack+0x9c7/0xea0
[ 318.914055][ C0] ? nf_hook.constprop.0+0x560/0x560
[ 318.919326][ C0] ? mld_ifc_timer_expire+0x437/0x8a0
[ 318.924699][ C0] ? __local_bh_enable_ip+0x15a/0x270
[ 318.930050][ C0] mld_ifc_timer_expire+0x449/0x8a0
[ 318.935247][ C0] call_timer_fn+0x1ac/0x780
[ 318.939816][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 318.945170][ C0] ? msleep_interruptible+0x150/0x150
[ 318.950522][ C0] ? trace_hardirqs_on+0x67/0x240
[ 318.955526][ C0] ? __kasan_check_read+0x11/0x20
[ 318.960530][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 318.965892][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0
[ 318.971255][ C0] run_timer_softirq+0x697/0x17a0
[ 318.976263][ C0] ? add_timer+0x930/0x930
[ 318.980681][ C0] ? kvm_clock_read+0x18/0x30
[ 318.985354][ C0] ? kvm_sched_clock_read+0x9/0x20
[ 318.990454][ C0] ? sched_clock+0x2e/0x50
[ 318.994867][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 318.999706][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 319.005965][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 319.012284][ C0] __do_softirq+0x262/0x98c
[ 319.016777][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 319.021610][ C0] irq_exit+0x19b/0x1e0
[ 319.025866][ C0] smp_apic_timer_interrupt+0x1a3/0x610
[ 319.031654][ C0] apic_timer_interrupt+0xf/0x20
[ 319.036567][ C0]
[ 319.039486][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 319.044859][ C0] 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
[ 319.064461][ C0] RSP: 0018:ffffffff88c07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 319.072851][ C0] RAX: 1ffffffff11a5e8d RBX: ffffffff88c7a1c0 RCX: 1ffffffff134b5ee
[ 319.080814][ C0] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c
[ 319.088855][ C0] RBP: ffffffff88c07d18 R08: ffffffff88c7a1c0 R09: fffffbfff118f439
[ 319.096808][ C0] R10: fffffbfff118f438 R11: ffffffff88c7a1c7 R12: dffffc0000000000
[ 319.104773][ C0] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000000
[ 319.112746][ C0] ? trace_hardirqs_on+0x5e/0x240
[ 319.117747][ C0] ? default_idle+0x1c/0x360
[ 319.122334][ C0] ? default_idle+0x4e/0x360
[ 319.127004][ C0] arch_cpu_idle+0xa/0x10
[ 319.131320][ C0] default_idle_call+0x84/0xb0
[ 319.136160][ C0] do_idle+0x413/0x760
[ 319.140211][ C0] ? arch_cpu_idle_exit+0x80/0x80
[ 319.145225][ C0] ? trace_hardirqs_on+0x67/0x240
[ 319.150342][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 319.156573][ C0] ? debug_smp_processor_id+0x3c/0x214
[ 319.162023][ C0] cpu_startup_entry+0x1b/0x20
[ 319.166853][ C0] rest_init+0x245/0x37b
[ 319.171138][ C0] arch_call_rest_init+0xe/0x1b
[ 319.175979][ C0] start_kernel+0x912/0x951
[ 319.180461][ C0] ? mem_encrypt_init+0xb/0xb
[ 319.185120][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 319.191337][ C0] ? x86_family+0x41/0x50
[ 319.195647][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 319.201879][ C0] x86_64_start_reservations+0x29/0x2b
[ 319.207330][ C0] x86_64_start_kernel+0x77/0x7b
[ 319.212249][ C0] secondary_startup_64+0xa4/0xb0