[....] 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.
[ 64.122041][ T26] kauditd_printk_skb: 7 callbacks suppressed
[ 64.122051][ T26] audit: type=1800 audit(1567872888.353:29): pid=9668 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
[ 64.148426][ T26] audit: type=1800 audit(1567872888.363:30): pid=9668 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 '10.128.0.53' (ECDSA) to the list of known hosts.
syzkaller login: [ 324.941788][ T9825] IPVS: ftp: loaded support on port[0] = 21
[ 324.988518][ T9825] chnl_net:caif_netlink_parms(): no params data found
[ 325.009345][ T9825] bridge0: port 1(bridge_slave_0) entered blocking state
[ 325.016810][ T9825] bridge0: port 1(bridge_slave_0) entered disabled state
[ 325.024474][ T9825] device bridge_slave_0 entered promiscuous mode
[ 325.031603][ T9825] bridge0: port 2(bridge_slave_1) entered blocking state
[ 325.039148][ T9825] bridge0: port 2(bridge_slave_1) entered disabled state
[ 325.046775][ T9825] device bridge_slave_1 entered promiscuous mode
[ 325.059957][ T9825] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 325.070517][ T9825] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 325.086555][ T9825] team0: Port device team_slave_0 added
[ 325.094351][ T9825] team0: Port device team_slave_1 added
[ 325.145067][ T9825] device hsr_slave_0 entered promiscuous mode
[ 325.213501][ T9825] device hsr_slave_1 entered promiscuous mode
[ 325.288327][ T9825] bridge0: port 2(bridge_slave_1) entered blocking state
[ 325.295526][ T9825] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 325.302805][ T9825] bridge0: port 1(bridge_slave_0) entered blocking state
[ 325.309916][ T9825] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 325.334388][ T9825] 8021q: adding VLAN 0 to HW filter on device bond0
[ 325.345440][ T9828] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 325.363876][ T9828] bridge0: port 1(bridge_slave_0) entered disabled state
[ 325.371447][ T9828] bridge0: port 2(bridge_slave_1) entered disabled state
[ 325.379542][ T9828] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 325.389256][ T9825] 8021q: adding VLAN 0 to HW filter on device team0
[ 325.398309][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 325.406805][ T3516] bridge0: port 1(bridge_slave_0) entered blocking state
[ 325.413967][ T3516] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 325.423144][ T9828] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 325.432074][ T9828] bridge0: port 2(bridge_slave_1) entered blocking state
[ 325.439235][ T9828] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 325.452336][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 325.460989][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 325.470687][ T9828] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 325.483041][ T9825] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
[ 325.494284][ T9825] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[ 325.505596][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 325.514244][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 325.522355][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
executing program
[ 325.536116][ T9825] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 430.663187][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU
[ 430.669853][ C0] rcu: 0-...!: (1 GPs behind) idle=11a/0/0x3 softirq=9365/9366 fqs=2
[ 430.678164][ C0] (t=10501 jiffies g=9453 q=41)
[ 430.683082][ C0] rcu: rcu_preempt kthread starved for 10497 jiffies! g9453 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
[ 430.694338][ C0] rcu: RCU grace-period kthread stack dump:
[ 430.700208][ C0] rcu_preempt I29392 10 2 0x80004000
[ 430.706537][ C0] Call Trace:
[ 430.709891][ C0] __schedule+0x755/0x1580
[ 430.714296][ C0] ? __sched_text_start+0x8/0x8
[ 430.719130][ C0] schedule+0xd9/0x260
[ 430.723181][ C0] schedule_timeout+0x486/0xc50
[ 430.728013][ C0] ? rwlock_bug.part.0+0x90/0x90
[ 430.732928][ C0] ? usleep_range+0x170/0x170
[ 430.737582][ C0] ? trace_hardirqs_on+0x67/0x240
[ 430.742588][ C0] ? __kasan_check_read+0x11/0x20
[ 430.747597][ C0] ? __next_timer_interrupt+0x1a0/0x1a0
[ 430.753134][ C0] ? swake_up_one+0x60/0x60
[ 430.757627][ C0] rcu_gp_kthread+0x9b2/0x18c0
[ 430.762372][ C0] ? rcu_barrier+0x310/0x310
[ 430.766942][ C0] ? trace_hardirqs_on+0x67/0x240
[ 430.771954][ C0] ? __kasan_check_read+0x11/0x20
[ 430.776967][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 430.783188][ C0] ? __kthread_parkme+0x108/0x1c0
[ 430.788189][ C0] ? __kasan_check_read+0x11/0x20
[ 430.793194][ C0] kthread+0x361/0x430
[ 430.797255][ C0] ? rcu_barrier+0x310/0x310
[ 430.801824][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 430.808044][ C0] ret_from_fork+0x24/0x30
[ 430.812472][ C0] NMI backtrace for cpu 0
[ 430.816785][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc7+ #0
[ 430.823888][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 430.833936][ C0] Call Trace:
[ 430.837237][ C0]
[ 430.840121][ C0] dump_stack+0x172/0x1f0
[ 430.844437][ C0] nmi_cpu_backtrace.cold+0x70/0xb2
[ 430.849617][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 430.855838][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45
[ 430.861449][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b
[ 430.867411][ C0] arch_trigger_cpumask_backtrace+0x14/0x20
[ 430.873301][ C0] rcu_dump_cpu_stacks+0x183/0x1cf
[ 430.878561][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13
[ 430.884096][ C0] ? raise_softirq+0x138/0x340
[ 430.888862][ C0] update_process_times+0x32/0x80
[ 430.893879][ C0] tick_sched_handle+0xa2/0x190
[ 430.898717][ C0] tick_sched_timer+0x53/0x140
[ 430.903463][ C0] __hrtimer_run_queues+0x364/0xe40
[ 430.908660][ C0] ? tick_sched_do_timer+0x1b0/0x1b0
[ 430.913940][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0
[ 430.919468][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 430.925165][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440
[ 430.931321][ C0] hrtimer_interrupt+0x314/0x770
[ 430.936337][ C0] smp_apic_timer_interrupt+0x160/0x610
[ 430.941873][ C0] apic_timer_interrupt+0xf/0x20
[ 430.946828][ C0] RIP: 0010:hhf_dequeue+0x506/0xa20
[ 430.952011][ C0] Code: 00 0f 85 35 04 00 00 4c 89 f8 4c 89 7b 08 48 c1 e8 03 42 80 3c 20 00 0f 85 12 04 00 00 49 89 1f e9 4b fb ff ff e8 6a 15 ac fb <48> 8b 45 b8 4c 8b 75 c8 42 80 3c 20 00 0f 85 3a 04 00 00 49 8b 85
[ 430.971614][ C0] RSP: 0018:ffff8880ae809038 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13
[ 430.980002][ C0] RAX: ffffffff88c7a1c0 RBX: ffff88809d59f538 RCX: ffffffff85c660f9
[ 430.987972][ C0] RDX: 0000000000000100 RSI: ffffffff85c65f86 RDI: ffff88809d59f540
[ 430.995921][ C0] RBP: ffff8880ae809088 R08: ffffffff88c7a1c0 R09: 0000000000000000
[ 431.003976][ C0] R10: fffffbfff134afaf R11: ffffffff88c7a1c0 R12: dffffc0000000000
[ 431.011934][ C0] R13: ffff88809d59f240 R14: ffff88809d59f5c0 R15: ffff88809d59f5d0
[ 431.019896][ C0] ? apic_timer_interrupt+0xa/0x20
[ 431.024988][ C0] ? hhf_dequeue+0x679/0xa20
[ 431.029555][ C0] ? hhf_dequeue+0x506/0xa20
[ 431.034127][ C0] ? hhf_dequeue+0x506/0xa20
[ 431.038796][ C0] __qdisc_run+0x1e7/0x19d0
[ 431.043319][ C0] ? dev_queue_xmit+0x18/0x20
[ 431.047991][ C0] __dev_queue_xmit+0x16f1/0x3650
[ 431.053006][ C0] ? __local_bh_enable_ip+0x15a/0x270
[ 431.058365][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 431.063641][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[ 431.069895][ C0] ? br_nf_post_routing+0xd73/0x1d30
[ 431.075223][ C0] ? br_forward_finish+0x235/0x400
[ 431.080438][ C0] ? __kasan_check_read+0x11/0x20
[ 431.085450][ C0] ? __dev_queue_xmit+0x2b15/0x3650
[ 431.090637][ C0] dev_queue_xmit+0x18/0x20
[ 431.095128][ C0] ? dev_queue_xmit+0x18/0x20
[ 431.099789][ C0] br_dev_queue_push_xmit+0x3f3/0x5c0
[ 431.105231][ C0] ? nf_hook_slow+0xf0/0x1e0
[ 431.109821][ C0] br_forward_finish+0xfa/0x400
[ 431.114652][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 431.120175][ C0] ? br_fdb_add.cold+0x8c/0x8c
[ 431.124921][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 431.130619][ C0] ? nf_hook_slow+0xf0/0x1e0
[ 431.135187][ C0] __br_forward+0x641/0xb00
[ 431.139670][ C0] ? br_forward_finish+0x400/0x400
[ 431.144776][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 431.150322][ C0] deliver_clone+0x61/0xc0
[ 431.154731][ C0] maybe_deliver+0x2c7/0x390
[ 431.159313][ C0] br_flood+0x13a/0x3d0
[ 431.163528][ C0] br_dev_xmit+0x98c/0x15a0
[ 431.168018][ C0] ? br_poll_controller+0x10/0x10
[ 431.173024][ C0] ? netif_skb_features+0x6c2/0xb90
[ 431.178231][ C0] ? netdev_set_sb_channel+0xe0/0xe0
[ 431.183505][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 431.189937][ C0] ? validate_xmit_xfrm+0x43c/0xf10
[ 431.195115][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 431.201333][ C0] dev_hard_start_xmit+0x1a3/0x9c0
[ 431.206437][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 431.212929][ C0] __dev_queue_xmit+0x2b15/0x3650
[ 431.217960][ C0] ? __nf_conntrack_find_get+0xa97/0x13a0
[ 431.223660][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 431.228997][ C0] ? __ip_finish_output+0x5fc/0xb90
[ 431.234188][ C0] ? __kasan_check_read+0x11/0x20
[ 431.240155][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 431.246397][ C0] ? __nf_ct_refresh_acct+0x93/0x2d0
[ 431.251662][ C0] ? lock_downgrade+0x920/0x920
[ 431.256505][ C0] ? lock_acquire+0x190/0x410
[ 431.261159][ C0] ? __ip_finish_output+0x5fc/0xb90
[ 431.266350][ C0] dev_queue_xmit+0x18/0x20
[ 431.270834][ C0] ? dev_queue_xmit+0x18/0x20
[ 431.275491][ C0] ip_finish_output2+0x1726/0x2570
[ 431.280616][ C0] ? nf_ct_deliver_cached_events+0x23d/0x6e0
[ 431.286591][ C0] ? ip_frag_next+0x910/0x910
[ 431.291247][ C0] ? __kasan_check_read+0x11/0x20
[ 431.296252][ C0] __ip_finish_output+0x5fc/0xb90
[ 431.301261][ C0] ? __ip_finish_output+0x5fc/0xb90
[ 431.306437][ C0] ? audit_alloc_mark+0x430/0x500
[ 431.311443][ C0] ip_finish_output+0x38/0x1f0
[ 431.316190][ C0] ip_output+0x21f/0x640
[ 431.320473][ C0] ? ip_mc_output+0xf40/0xf40
[ 431.325128][ C0] ? __ip_finish_output+0xb90/0xb90
[ 431.330305][ C0] ? __kasan_check_read+0x11/0x20
[ 431.335320][ C0] ip_local_out+0xbb/0x190
[ 431.339761][ C0] igmpv3_sendpack+0x1b5/0x2c0
[ 431.344522][ C0] igmp_ifc_timer_expire+0x687/0xa00
[ 431.349791][ C0] ? call_timer_fn+0xe0/0x780
[ 431.354449][ C0] call_timer_fn+0x1ac/0x780
[ 431.359906][ C0] ? __ip_mc_dec_group+0x520/0x520
[ 431.365171][ C0] ? msleep_interruptible+0x150/0x150
[ 431.370534][ C0] ? trace_hardirqs_on+0x67/0x240
[ 431.375535][ C0] ? __kasan_check_read+0x11/0x20
[ 431.380536][ C0] ? __ip_mc_dec_group+0x520/0x520
[ 431.385627][ C0] ? __ip_mc_dec_group+0x520/0x520
[ 431.390744][ C0] run_timer_softirq+0x697/0x17a0
[ 431.395751][ C0] ? add_timer+0x930/0x930
[ 431.400158][ C0] ? kvm_clock_read+0x18/0x30
[ 431.404813][ C0] ? kvm_sched_clock_read+0x9/0x20
[ 431.409901][ C0] ? sched_clock+0x2e/0x50
[ 431.414300][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 431.419131][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 431.425359][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 431.431581][ C0] __do_softirq+0x262/0x98c
[ 431.436063][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 431.440895][ C0] irq_exit+0x19b/0x1e0
[ 431.445032][ C0] smp_apic_timer_interrupt+0x1a3/0x610
[ 431.450564][ C0] apic_timer_interrupt+0xf/0x20
[ 431.455481][ C0]
[ 431.458399][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 431.463752][ 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
[ 431.483344][ C0] RSP: 0018:ffffffff88c07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 431.491744][ C0] RAX: 1ffffffff11a5e8d RBX: ffffffff88c7a1c0 RCX: 1ffffffff134b5ee
[ 431.499696][ C0] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c
[ 431.507646][ C0] RBP: ffffffff88c07d18 R08: ffffffff88c7a1c0 R09: fffffbfff118f439
[ 431.515607][ C0] R10: fffffbfff118f438 R11: ffffffff88c7a1c7 R12: dffffc0000000000
[ 431.523559][ C0] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000000
[ 431.531518][ C0] ? trace_hardirqs_on+0x5e/0x240
[ 431.536524][ C0] ? default_idle+0x1c/0x360
[ 431.541095][ C0] ? default_idle+0x4e/0x360
[ 431.545672][ C0] arch_cpu_idle+0xa/0x10
[ 431.549978][ C0] default_idle_call+0x84/0xb0
[ 431.554723][ C0] do_idle+0x413/0x760
[ 431.558778][ C0] ? arch_cpu_idle_exit+0x80/0x80
[ 431.563795][ C0] ? trace_hardirqs_on+0x67/0x240
[ 431.568800][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 431.575017][ C0] ? debug_smp_processor_id+0x3c/0x214
[ 431.580458][ C0] cpu_startup_entry+0x1b/0x20
[ 431.585207][ C0] rest_init+0x245/0x37b
[ 431.589479][ C0] arch_call_rest_init+0xe/0x1b
[ 431.594327][ C0] start_kernel+0x912/0x951
[ 431.598814][ C0] ? mem_encrypt_init+0xb/0xb
[ 431.603474][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 431.609755][ C0] ? x86_family+0x41/0x50
[ 431.614069][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 431.620290][ C0] x86_64_start_reservations+0x29/0x2b
[ 431.625724][ C0] x86_64_start_kernel+0x77/0x7b
[ 431.630654][ C0] secondary_startup_64+0xa4/0xb0