[....] 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.
[ 62.588869][ T26] kauditd_printk_skb: 7 callbacks suppressed
[ 62.588880][ T26] audit: type=1800 audit(1568289234.251:29): pid=9632 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
[ 62.615231][ T26] audit: type=1800 audit(1568289234.251:30): pid=9632 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 '10.128.10.19' (ECDSA) to the list of known hosts.
syzkaller login: [ 304.851604][ T9787] IPVS: ftp: loaded support on port[0] = 21
[ 304.898942][ T9787] chnl_net:caif_netlink_parms(): no params data found
[ 304.921171][ T9787] bridge0: port 1(bridge_slave_0) entered blocking state
[ 304.928489][ T9787] bridge0: port 1(bridge_slave_0) entered disabled state
[ 304.936186][ T9787] device bridge_slave_0 entered promiscuous mode
[ 304.943472][ T9787] bridge0: port 2(bridge_slave_1) entered blocking state
[ 304.950559][ T9787] bridge0: port 2(bridge_slave_1) entered disabled state
[ 304.958186][ T9787] device bridge_slave_1 entered promiscuous mode
[ 304.971691][ T9787] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 304.982005][ T9787] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 304.997422][ T9787] team0: Port device team_slave_0 added
[ 305.004365][ T9787] team0: Port device team_slave_1 added
[ 305.082421][ T9787] device hsr_slave_0 entered promiscuous mode
[ 305.151203][ T9787] device hsr_slave_1 entered promiscuous mode
[ 305.196099][ T9787] bridge0: port 2(bridge_slave_1) entered blocking state
[ 305.203200][ T9787] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 305.210463][ T9787] bridge0: port 1(bridge_slave_0) entered blocking state
[ 305.217532][ T9787] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 305.242218][ T9787] 8021q: adding VLAN 0 to HW filter on device bond0
[ 305.253262][ T9789] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 305.271642][ T9789] bridge0: port 1(bridge_slave_0) entered disabled state
[ 305.279169][ T9789] bridge0: port 2(bridge_slave_1) entered disabled state
[ 305.287019][ T9789] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 305.296810][ T9787] 8021q: adding VLAN 0 to HW filter on device team0
[ 305.306023][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 305.315162][ T5] bridge0: port 1(bridge_slave_0) entered blocking state
[ 305.322398][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 305.342043][ T9792] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 305.350345][ T9792] bridge0: port 2(bridge_slave_1) entered blocking state
[ 305.357427][ T9792] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 305.365893][ T9792] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 305.375280][ T9792] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 305.383886][ T9792] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
executing program
[ 305.392012][ T9792] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 305.400716][ T9787] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 305.408714][ T9793] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 305.423440][ T9787] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 410.460782][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU
[ 410.467425][ C0] rcu: 0-...!: (10499 ticks this GP) idle=e2a/0/0x3 softirq=9256/9256 fqs=33
[ 410.476341][ C0] (t=10501 jiffies g=9069 q=37)
[ 410.481280][ C0] rcu: rcu_preempt kthread starved for 10436 jiffies! g9069 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
[ 410.492529][ C0] rcu: RCU grace-period kthread stack dump:
[ 410.498397][ C0] rcu_preempt I29328 10 2 0x80004000
[ 410.504801][ C0] Call Trace:
[ 410.508204][ C0] __schedule+0x755/0x1580
[ 410.512608][ C0] ? __sched_text_start+0x8/0x8
[ 410.517454][ C0] schedule+0xd9/0x260
[ 410.521609][ C0] schedule_timeout+0x486/0xc50
[ 410.526495][ C0] ? rwlock_bug.part.0+0x90/0x90
[ 410.531417][ C0] ? usleep_range+0x170/0x170
[ 410.536103][ C0] ? trace_hardirqs_on+0x67/0x240
[ 410.541153][ C0] ? __kasan_check_read+0x11/0x20
[ 410.546194][ C0] ? __next_timer_interrupt+0x1a0/0x1a0
[ 410.551750][ C0] ? swake_up_one+0x60/0x60
[ 410.556260][ C0] rcu_gp_kthread+0x9b2/0x18c0
[ 410.561100][ C0] ? rcu_barrier+0x310/0x310
[ 410.565668][ C0] ? trace_hardirqs_on+0x67/0x240
[ 410.570671][ C0] ? __kasan_check_read+0x11/0x20
[ 410.575729][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 410.581990][ C0] ? __kthread_parkme+0x108/0x1c0
[ 410.587104][ C0] ? __kasan_check_read+0x11/0x20
[ 410.592107][ C0] kthread+0x361/0x430
[ 410.596155][ C0] ? rcu_barrier+0x310/0x310
[ 410.600725][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 410.606947][ C0] ret_from_fork+0x24/0x30
[ 410.611382][ C0] NMI backtrace for cpu 0
[ 410.615705][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc8+ #0
[ 410.622815][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 410.632873][ C0] Call Trace:
[ 410.636143][ C0]
[ 410.639051][ C0] dump_stack+0x172/0x1f0
[ 410.643927][ C0] nmi_cpu_backtrace.cold+0x70/0xb2
[ 410.649122][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 410.656125][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45
[ 410.661748][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b
[ 410.667716][ C0] arch_trigger_cpumask_backtrace+0x14/0x20
[ 410.673592][ C0] rcu_dump_cpu_stacks+0x183/0x1cf
[ 410.678692][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13
[ 410.684276][ C0] ? raise_softirq+0x138/0x340
[ 410.689032][ C0] update_process_times+0x32/0x80
[ 410.694062][ C0] tick_sched_handle+0xa2/0x190
[ 410.698893][ C0] tick_sched_timer+0x53/0x140
[ 410.703647][ C0] __hrtimer_run_queues+0x364/0xe40
[ 410.708835][ C0] ? tick_sched_do_timer+0x1b0/0x1b0
[ 410.714104][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0
[ 410.719658][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 410.725381][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440
[ 410.731430][ C0] hrtimer_interrupt+0x314/0x770
[ 410.736509][ C0] smp_apic_timer_interrupt+0x160/0x610
[ 410.742036][ C0] apic_timer_interrupt+0xf/0x20
[ 410.747007][ C0] RIP: 0010:hhf_dequeue+0x61a/0xa20
[ 410.752202][ C0] Code: 08 4c 8b 3b 48 89 fa 48 c1 ea 03 42 80 3c 22 00 0f 85 d0 03 00 00 49 8d 7f 08 4c 8b 73 08 48 89 fa 48 c1 ea 03 42 80 3c 22 00 <0f> 85 ac 03 00 00 4c 89 f2 4d 89 77 08 48 c1 ea 03 42 80 3c 22 00
[ 410.771789][ C0] RSP: 0018:ffff8880ae808af8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[ 410.780179][ C0] RAX: 1ffff11014ed5a0f RBX: ffff8880a76ad078 RCX: ffffffff85c66051
[ 410.788131][ C0] RDX: 1ffff11014ed5a23 RSI: ffffffff85c6605b RDI: ffff8880a76ad118
[ 410.796083][ C0] RBP: ffff8880ae808b48 R08: ffffffff88c7a1c0 R09: 0000000000000000
[ 410.804035][ C0] R10: fffffbfff134afaf R11: ffffffff88c7a1c0 R12: dffffc0000000000
[ 410.811987][ C0] R13: ffff8880a76acd80 R14: ffff8880a76ad110 R15: ffff8880a76ad110
[ 410.819965][ C0] ? apic_timer_interrupt+0xa/0x20
[ 410.825062][ C0] ? hhf_dequeue+0x5d1/0xa20
[ 410.829631][ C0] ? hhf_dequeue+0x5db/0xa20
[ 410.834218][ C0] ? hhf_dequeue+0x5db/0xa20
[ 410.838866][ C0] __qdisc_run+0x1e7/0x19d0
[ 410.843404][ C0] ? dev_queue_xmit+0x18/0x20
[ 410.849631][ C0] __dev_queue_xmit+0x16f1/0x3650
[ 410.854634][ C0] ? process_backlog+0x206/0x750
[ 410.859555][ C0] ? net_rx_action+0x4d6/0x1030
[ 410.864392][ C0] ? __do_softirq+0x262/0x98c
[ 410.869058][ C0] ? irq_exit+0x19b/0x1e0
[ 410.873367][ C0] ? smp_apic_timer_interrupt+0x1a3/0x610
[ 410.879067][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 410.884335][ C0] ? quarantine_put+0x11c/0x1c0
[ 410.889181][ C0] ? trace_hardirqs_on+0x67/0x240
[ 410.894265][ C0] ? __skb_ext_put+0xd9/0x210
[ 410.898925][ C0] dev_queue_xmit+0x18/0x20
[ 410.903409][ C0] ? dev_queue_xmit+0x18/0x20
[ 410.908122][ C0] br_dev_queue_push_xmit+0x3f3/0x5c0
[ 410.913517][ C0] ? __skb_ext_del+0xb0/0x2c0
[ 410.918176][ C0] ? lock_downgrade+0x920/0x920
[ 410.923034][ C0] br_nf_dev_queue_xmit+0x34e/0x1470
[ 410.928299][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 410.933999][ C0] br_nf_post_routing+0x1502/0x1d30
[ 410.939179][ C0] ? br_nf_dev_queue_xmit+0x1470/0x1470
[ 410.944705][ C0] ? mark_held_locks+0xf0/0xf0
[ 410.952506][ C0] ? nf_bridge_update_protocol+0x1d0/0x1d0
[ 410.958298][ C0] ? __kasan_kmalloc.constprop.0+0xcf/0xe0
[ 410.964145][ C0] nf_hook_slow+0xbc/0x1e0
[ 410.968542][ C0] br_forward_finish+0x215/0x400
[ 410.973470][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 410.979047][ C0] ? start_kernel+0x912/0x951
[ 410.983715][ C0] ? x86_64_start_reservations+0x29/0x2b
[ 410.989339][ C0] ? x86_64_start_kernel+0x77/0x7b
[ 410.994433][ C0] ? br_fdb_add.cold+0x8c/0x8c
[ 410.999238][ C0] ? ip_vs_out+0x244/0x1700
[ 411.003726][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 411.009598][ C0] ? nf_hook_slow+0xf0/0x1e0
[ 411.014235][ C0] ? should_fail+0x1de/0x852
[ 411.018823][ C0] br_nf_hook_thresh+0x2e9/0x370
[ 411.023741][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 411.029275][ C0] ? setup_pre_routing+0x4b0/0x4b0
[ 411.034367][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 411.039897][ C0] ? br_nf_forward_finish+0x176/0xa90
[ 411.045262][ C0] ? __sanitizer_cov_trace_switch+0x49/0x80
[ 411.051136][ C0] br_nf_forward_finish+0x66c/0xa90
[ 411.056321][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 411.061846][ C0] br_nf_forward_ip+0xc74/0x21e0
[ 411.066763][ C0] ? br_nf_forward_arp+0x1670/0x1670
[ 411.072027][ C0] ? mark_held_locks+0xf0/0xf0
[ 411.076769][ C0] ? br_nf_hook_thresh+0x370/0x370
[ 411.081897][ C0] ? __vlan_flush+0x120/0x120
[ 411.086557][ C0] nf_hook_slow+0xbc/0x1e0
[ 411.090953][ C0] __br_forward+0x393/0xb00
[ 411.095436][ C0] ? br_forward_finish+0x400/0x400
[ 411.100526][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 411.106052][ C0] deliver_clone+0x61/0xc0
[ 411.110444][ C0] br_flood+0x325/0x3d0
[ 411.114581][ C0] br_handle_frame_finish+0xb46/0x1670
[ 411.120017][ C0] ? br_handle_local_finish+0x20/0x20
[ 411.125368][ C0] ? __dev_queue_xmit+0x17e0/0x3650
[ 411.130545][ C0] ? audit_alloc_mark+0x430/0x500
[ 411.135558][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 411.141252][ C0] ? nf_hook_slow+0xf0/0x1e0
[ 411.145824][ C0] br_nf_hook_thresh+0x2e9/0x370
[ 411.150751][ C0] ? br_handle_local_finish+0x20/0x20
[ 411.156104][ C0] ? setup_pre_routing+0x4b0/0x4b0
[ 411.161198][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 411.167417][ C0] ? br_handle_local_finish+0x20/0x20
[ 411.172769][ C0] ? __sanitizer_cov_trace_switch+0x49/0x80
[ 411.178642][ C0] ? __sanitizer_cov_trace_switch+0x49/0x80
[ 411.184516][ C0] br_nf_pre_routing_finish_ipv6+0x6fb/0xd80
[ 411.190476][ C0] ? br_handle_local_finish+0x20/0x20
[ 411.195831][ C0] br_nf_pre_routing_ipv6+0x456/0x832
[ 411.201184][ C0] ? br_validate_ipv6+0xb80/0xb80
[ 411.206187][ C0] ? br_nf_pre_routing_finish.cold+0x124/0x124
[ 411.212318][ C0] ? br_nf_pre_routing+0x246/0x2355
[ 411.217506][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 411.223729][ C0] ? skb_pull_rcsum+0x155/0x300
[ 411.228559][ C0] br_nf_pre_routing+0x1743/0x2355
[ 411.233650][ C0] ? br_nf_pre_routing_finish+0x1730/0x1730
[ 411.239536][ C0] ? br_nf_pre_routing_finish+0x1730/0x1730
[ 411.245410][ C0] br_handle_frame+0x806/0x133e
[ 411.250240][ C0] ? br_handle_frame_finish+0x1670/0x1670
[ 411.255940][ C0] ? stack_trace_consume_entry+0x190/0x190
[ 411.261726][ C0] ? br_handle_local_finish+0x20/0x20
[ 411.267082][ C0] ? cpumask_test_cpu.constprop.0+0x60/0x60
[ 411.272954][ C0] ? save_stack+0x5c/0x90
[ 411.277262][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 411.283492][ C0] ? br_handle_frame_finish+0x1670/0x1670
[ 411.289195][ C0] __netif_receive_skb_core+0xfc1/0x3060
[ 411.294808][ C0] ? __do_softirq+0x262/0x98c
[ 411.299477][ C0] ? irq_exit+0x19b/0x1e0
[ 411.303787][ C0] ? smp_apic_timer_interrupt+0x1a3/0x610
[ 411.309484][ C0] ? apic_timer_interrupt+0xf/0x20
[ 411.314582][ C0] ? native_safe_halt+0xe/0x10
[ 411.319382][ C0] ? cpu_startup_entry+0x1b/0x20
[ 411.324299][ C0] ? rest_init+0x160/0x37b
[ 411.328693][ C0] ? do_xdp_generic+0x50/0x50
[ 411.333352][ C0] ? __kasan_check_write+0x14/0x20
[ 411.338452][ C0] ? lock_downgrade+0x920/0x920
[ 411.343284][ C0] ? rwlock_bug.part.0+0x90/0x90
[ 411.348241][ C0] ? debug_check_no_obj_freed+0xc0/0x43f
[ 411.353863][ C0] __netif_receive_skb_one_core+0xa8/0x1a0
[ 411.359648][ C0] ? __netif_receive_skb_one_core+0xa8/0x1a0
[ 411.365612][ C0] ? __kasan_check_write+0x14/0x20
[ 411.370715][ C0] ? __netif_receive_skb_core+0x3060/0x3060
[ 411.376598][ C0] ? lock_acquire+0x190/0x410
[ 411.381267][ C0] ? process_backlog+0x195/0x750
[ 411.386185][ C0] __netif_receive_skb+0x2c/0x1d0
[ 411.391310][ C0] process_backlog+0x206/0x750
[ 411.396096][ C0] ? __put_task_struct+0x207/0x4c0
[ 411.401191][ C0] net_rx_action+0x4d6/0x1030
[ 411.405850][ C0] ? napi_complete_done+0x4b0/0x4b0
[ 411.411047][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 411.417276][ C0] __do_softirq+0x262/0x98c
[ 411.421763][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 411.426603][ C0] irq_exit+0x19b/0x1e0
[ 411.430742][ C0] smp_apic_timer_interrupt+0x1a3/0x610
[ 411.436278][ C0] apic_timer_interrupt+0xf/0x20
[ 411.441190][ C0]
[ 411.444111][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 411.449465][ 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
[ 411.469047][ C0] RSP: 0018:ffffffff88c07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 411.477447][ C0] RAX: 1ffffffff11a5e8d RBX: ffffffff88c7a1c0 RCX: 1ffffffff134b5ee
[ 411.485400][ C0] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c
[ 411.493364][ C0] RBP: ffffffff88c07d18 R08: ffffffff88c7a1c0 R09: fffffbfff118f439
[ 411.501318][ C0] R10: fffffbfff118f438 R11: ffffffff88c7a1c7 R12: dffffc0000000000
[ 411.509273][ C0] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000000
[ 411.517249][ C0] ? trace_hardirqs_on+0x5e/0x240
[ 411.522255][ C0] ? default_idle+0x1c/0x360
[ 411.526836][ C0] ? default_idle+0x4e/0x360
[ 411.531470][ C0] arch_cpu_idle+0xa/0x10
[ 411.535798][ C0] default_idle_call+0x84/0xb0
[ 411.540543][ C0] do_idle+0x413/0x760
[ 411.544595][ C0] ? arch_cpu_idle_exit+0x80/0x80
[ 411.549597][ C0] ? trace_hardirqs_on+0x67/0x240
[ 411.554600][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 411.560873][ C0] ? debug_smp_processor_id+0x3c/0x214
[ 411.566324][ C0] cpu_startup_entry+0x1b/0x20
[ 411.571068][ C0] rest_init+0x245/0x37b
[ 411.575297][ C0] arch_call_rest_init+0xe/0x1b
[ 411.580124][ C0] start_kernel+0x912/0x951
[ 411.584614][ C0] ? mem_encrypt_init+0xb/0xb
[ 411.589281][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 411.595503][ C0] ? x86_family+0x41/0x50
[ 411.599812][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 411.606045][ C0] x86_64_start_reservations+0x29/0x2b
[ 411.611486][ C0] x86_64_start_kernel+0x77/0x7b
[ 411.616480][ C0] secondary_startup_64+0xa4/0xb0