[....] 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.
[ 61.035949][ T26] kauditd_printk_skb: 7 callbacks suppressed
[ 61.035959][ T26] audit: type=1800 audit(1567898444.167:29): pid=9594 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
[ 61.062111][ T26] audit: type=1800 audit(1567898444.167:30): pid=9594 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 '10.128.0.205' (ECDSA) to the list of known hosts.
syzkaller login: [ 71.799104][ T9747] IPVS: ftp: loaded support on port[0] = 21
[ 71.844441][ T9747] chnl_net:caif_netlink_parms(): no params data found
[ 71.865565][ T9747] bridge0: port 1(bridge_slave_0) entered blocking state
[ 71.872759][ T9747] bridge0: port 1(bridge_slave_0) entered disabled state
[ 71.880309][ T9747] device bridge_slave_0 entered promiscuous mode
[ 71.887370][ T9747] bridge0: port 2(bridge_slave_1) entered blocking state
[ 71.894488][ T9747] bridge0: port 2(bridge_slave_1) entered disabled state
[ 71.901975][ T9747] device bridge_slave_1 entered promiscuous mode
[ 71.915851][ T9747] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 71.926160][ T9747] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 71.942934][ T9747] team0: Port device team_slave_0 added
[ 71.949301][ T9747] team0: Port device team_slave_1 added
[ 72.001309][ T9747] device hsr_slave_0 entered promiscuous mode
[ 72.039774][ T9747] device hsr_slave_1 entered promiscuous mode
[ 72.084570][ T9747] bridge0: port 2(bridge_slave_1) entered blocking state
[ 72.091645][ T9747] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 72.098898][ T9747] bridge0: port 1(bridge_slave_0) entered blocking state
[ 72.105999][ T9747] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 72.130170][ T9747] 8021q: adding VLAN 0 to HW filter on device bond0
[ 72.141452][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 72.159840][ T22] bridge0: port 1(bridge_slave_0) entered disabled state
[ 72.167233][ T22] bridge0: port 2(bridge_slave_1) entered disabled state
[ 72.175149][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 72.185216][ T9747] 8021q: adding VLAN 0 to HW filter on device team0
[ 72.194145][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 72.202562][ T5] bridge0: port 1(bridge_slave_0) entered blocking state
[ 72.209618][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 72.218833][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 72.227678][ T17] bridge0: port 2(bridge_slave_1) entered blocking state
[ 72.234745][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 72.247657][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 72.256352][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 72.266051][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 72.278434][ T9747] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
[ 72.290276][ T9747] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[ 72.301539][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 72.310390][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 72.318483][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
executing program
[ 72.332824][ T9747] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 177.459379][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 177.466354][ C1] (detected by 1, t=10502 jiffies, g=8789, q=49)
[ 177.472743][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294954890-4294944387), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 177.486072][ C1] swapper/1 R running task 30072 0 1 0x80004008
[ 177.493947][ C1] Call Trace:
[ 177.497205][ C1]
[ 177.500042][ C1] sched_show_task.cold+0x2ed/0x34e
[ 177.505223][ C1] rcu_sched_clock_irq.cold+0xac8/0xc13
[ 177.510748][ C1] update_process_times+0x32/0x80
[ 177.515748][ C1] tick_sched_handle+0xa2/0x190
[ 177.520588][ C1] tick_sched_timer+0x53/0x140
[ 177.525344][ C1] __hrtimer_run_queues+0x364/0xe40
[ 177.530521][ C1] ? tick_sched_do_timer+0x1b0/0x1b0
[ 177.535787][ C1] ? hrtimer_start_range_ns+0xcb0/0xcb0
[ 177.541313][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 177.547010][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440
[ 177.553055][ C1] hrtimer_interrupt+0x314/0x770
[ 177.557979][ C1] smp_apic_timer_interrupt+0x160/0x610
[ 177.563511][ C1] apic_timer_interrupt+0xf/0x20
[ 177.568430][ C1] RIP: 0010:__list_add_valid+0x27/0xa0
[ 177.573871][ C1] Code: 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 54 24 08 48 39 f2 0f 85 5a 01 00 00 48 b8
[ 177.593449][ C1] RSP: 0018:ffff8880ae909010 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13
[ 177.601838][ C1] RAX: dffffc0000000000 RBX: ffff8880a19042f8 RCX: ffffffff85c66051
[ 177.609789][ C1] RDX: 1ffff11014320873 RSI: ffff8880a1904390 RDI: ffff8880a1904398
[ 177.617738][ C1] RBP: ffff8880ae909028 R08: ffff8880a98c6340 R09: 0000000000000000
[ 177.625686][ C1] R10: fffffbfff134afaf R11: ffff8880a98c6340 R12: ffff8880a1904390
[ 177.633639][ C1] R13: ffff8880a19042f8 R14: ffff8880a1904398 R15: ffff8880a1904390
[ 177.641598][ C1] ? apic_timer_interrupt+0xa/0x20
[ 177.646701][ C1] ? hhf_dequeue+0x5d1/0xa20
[ 177.651288][ C1] hhf_dequeue+0x66d/0xa20
[ 177.655707][ C1] __qdisc_run+0x1e7/0x19d0
[ 177.660200][ C1] ? dev_queue_xmit+0x18/0x20
[ 177.664859][ C1] __dev_queue_xmit+0x16f1/0x3650
[ 177.669861][ C1] ? __local_bh_enable_ip+0x15a/0x270
[ 177.675324][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 177.680592][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[ 177.686807][ C1] ? br_nf_post_routing+0xd73/0x1d30
[ 177.692082][ C1] ? br_forward_finish+0x235/0x400
[ 177.697173][ C1] ? __kasan_check_read+0x11/0x20
[ 177.702177][ C1] ? __dev_queue_xmit+0x2b15/0x3650
[ 177.707350][ C1] dev_queue_xmit+0x18/0x20
[ 177.711852][ C1] ? dev_queue_xmit+0x18/0x20
[ 177.716504][ C1] br_dev_queue_push_xmit+0x3f3/0x5c0
[ 177.721853][ C1] ? nf_hook_slow+0xf0/0x1e0
[ 177.726421][ C1] br_forward_finish+0xfa/0x400
[ 177.731250][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 177.736778][ C1] ? br_fdb_add.cold+0x8c/0x8c
[ 177.741522][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 177.747230][ C1] ? nf_hook_slow+0xf0/0x1e0
[ 177.751803][ C1] __br_forward+0x641/0xb00
[ 177.756286][ C1] ? br_forward_finish+0x400/0x400
[ 177.761375][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 177.766912][ C1] deliver_clone+0x61/0xc0
[ 177.771306][ C1] maybe_deliver+0x2c7/0x390
[ 177.775887][ C1] br_flood+0x13a/0x3d0
[ 177.780025][ C1] br_dev_xmit+0x98c/0x15a0
[ 177.784509][ C1] ? br_poll_controller+0x10/0x10
[ 177.789510][ C1] ? netif_skb_features+0x6c2/0xb90
[ 177.794689][ C1] ? netdev_set_sb_channel+0xe0/0xe0
[ 177.799954][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 177.806182][ C1] ? validate_xmit_xfrm+0x43c/0xf10
[ 177.811361][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 177.817859][ C1] dev_hard_start_xmit+0x1a3/0x9c0
[ 177.822952][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 177.829172][ C1] __dev_queue_xmit+0x2b15/0x3650
[ 177.834175][ C1] ? __nf_conntrack_find_get+0xa97/0x13a0
[ 177.839879][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 177.845141][ C1] ? __ip_finish_output+0x5fc/0xb90
[ 177.850320][ C1] ? __kasan_check_read+0x11/0x20
[ 177.855323][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 177.861538][ C1] ? __nf_ct_refresh_acct+0x93/0x2d0
[ 177.866800][ C1] ? lock_downgrade+0x920/0x920
[ 177.871629][ C1] ? lock_acquire+0x190/0x410
[ 177.876284][ C1] ? __ip_finish_output+0x5fc/0xb90
[ 177.881472][ C1] dev_queue_xmit+0x18/0x20
[ 177.885954][ C1] ? dev_queue_xmit+0x18/0x20
[ 177.890610][ C1] ip_finish_output2+0x1726/0x2570
[ 177.895699][ C1] ? nf_ct_deliver_cached_events+0x23d/0x6e0
[ 177.901684][ C1] ? ip_frag_next+0x910/0x910
[ 177.906340][ C1] ? __kasan_check_read+0x11/0x20
[ 177.911346][ C1] __ip_finish_output+0x5fc/0xb90
[ 177.916355][ C1] ? __ip_finish_output+0x5fc/0xb90
[ 177.921531][ C1] ? audit_alloc_mark+0x430/0x500
[ 177.926533][ C1] ip_finish_output+0x38/0x1f0
[ 177.931276][ C1] ip_output+0x21f/0x640
[ 177.935511][ C1] ? ip_mc_output+0xf40/0xf40
[ 177.940167][ C1] ? __ip_finish_output+0xb90/0xb90
[ 177.945341][ C1] ? __kasan_check_read+0x11/0x20
[ 177.950346][ C1] ip_local_out+0xbb/0x190
[ 177.954743][ C1] igmpv3_sendpack+0x1b5/0x2c0
[ 177.959486][ C1] igmp_ifc_timer_expire+0x687/0xa00
[ 177.964777][ C1] ? call_timer_fn+0xe0/0x780
[ 177.969445][ C1] call_timer_fn+0x1ac/0x780
[ 177.974019][ C1] ? __ip_mc_dec_group+0x520/0x520
[ 177.979111][ C1] ? msleep_interruptible+0x150/0x150
[ 177.984464][ C1] ? trace_hardirqs_on+0x67/0x240
[ 177.989468][ C1] ? __kasan_check_read+0x11/0x20
[ 177.994469][ C1] ? __ip_mc_dec_group+0x520/0x520
[ 177.999559][ C1] ? __ip_mc_dec_group+0x520/0x520
[ 178.004647][ C1] run_timer_softirq+0x697/0x17a0
[ 178.009652][ C1] ? add_timer+0x930/0x930
[ 178.014074][ C1] ? kvm_clock_read+0x18/0x30
[ 178.018743][ C1] ? kvm_sched_clock_read+0x9/0x20
[ 178.023835][ C1] ? sched_clock+0x2e/0x50
[ 178.028227][ C1] ? sched_clock_cpu+0x1b/0x1b0
[ 178.033059][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 178.039276][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 178.045505][ C1] __do_softirq+0x262/0x98c
[ 178.049986][ C1] ? sched_clock_cpu+0x1b/0x1b0
[ 178.054818][ C1] irq_exit+0x19b/0x1e0
[ 178.058952][ C1] smp_apic_timer_interrupt+0x1a3/0x610
[ 178.064475][ C1] apic_timer_interrupt+0xf/0x20
[ 178.069387][ C1]
[ 178.072316][ C1] RIP: 0010:native_safe_halt+0xe/0x10
[ 178.077668][ 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
[ 178.097259][ C1] RSP: 0018:ffff8880a98dfd68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 178.105925][ C1] RAX: 1ffffffff11a5e8d RBX: ffff8880a98c6340 RCX: 1ffffffff134b5ee
[ 178.113881][ C1] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c
[ 178.121835][ C1] RBP: ffff8880a98dfd98 R08: ffff8880a98c6340 R09: ffffed1015318c69
[ 178.129898][ C1] R10: ffffed1015318c68 R11: ffff8880a98c6347 R12: dffffc0000000000
[ 178.137868][ C1] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000001
[ 178.145854][ C1] ? trace_hardirqs_on+0x5e/0x240
[ 178.150864][ C1] ? default_idle+0x1c/0x360
[ 178.155435][ C1] ? default_idle+0x4e/0x360
[ 178.160006][ C1] arch_cpu_idle+0xa/0x10
[ 178.164322][ C1] default_idle_call+0x84/0xb0
[ 178.169088][ C1] do_idle+0x413/0x760
[ 178.173157][ C1] ? arch_cpu_idle_exit+0x80/0x80
[ 178.178173][ C1] ? _raw_spin_unlock_irqrestore+0xa4/0xe0
[ 178.183963][ C1] ? complete+0x61/0x80
[ 178.188099][ C1] cpu_startup_entry+0x1b/0x20
[ 178.192899][ C1] start_secondary+0x315/0x430
[ 178.197652][ C1] ? set_cpu_sibling_map+0x2180/0x2180
[ 178.203100][ C1] secondary_startup_64+0xa4/0xb0
[ 178.208126][ C1] rcu: rcu_preempt kthread starved for 10576 jiffies! g8789 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
[ 178.219204][ C1] rcu: RCU grace-period kthread stack dump:
[ 178.225069][ C1] rcu_preempt R running task 29688 10 2 0x80004000
[ 178.232940][ C1] Call Trace:
[ 178.236210][ C1] __schedule+0x755/0x1580
[ 178.240605][ C1] ? __sched_text_start+0x8/0x8
[ 178.245438][ C1] schedule+0xd9/0x260
[ 178.249483][ C1] schedule_timeout+0x486/0xc50
[ 178.254308][ C1] ? rwlock_bug.part.0+0x90/0x90
[ 178.259223][ C1] ? usleep_range+0x170/0x170
[ 178.265437][ C1] ? trace_hardirqs_on+0x67/0x240
[ 178.270456][ C1] ? __kasan_check_read+0x11/0x20
[ 178.275464][ C1] ? __next_timer_interrupt+0x1a0/0x1a0
[ 178.280996][ C1] ? swake_up_one+0x60/0x60
[ 178.285474][ C1] ? trace_hardirqs_on+0x67/0x240
[ 178.290479][ C1] rcu_gp_kthread+0x9b2/0x18c0
[ 178.295223][ C1] ? rcu_barrier+0x310/0x310
[ 178.299791][ C1] ? trace_hardirqs_on+0x67/0x240
[ 178.304805][ C1] ? __kasan_check_read+0x11/0x20
[ 178.309811][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 178.316029][ C1] ? __kthread_parkme+0x108/0x1c0
[ 178.321029][ C1] ? __kasan_check_read+0x11/0x20
[ 178.326028][ C1] kthread+0x361/0x430
[ 178.330084][ C1] ? rcu_barrier+0x310/0x310
[ 178.334653][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 178.340870][ C1] ret_from_fork+0x24/0x30