[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 54.960545][ T26] audit: type=1800 audit(1568292809.127:25): pid=8514 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0
[ 54.991929][ T26] audit: type=1800 audit(1568292809.137:26): pid=8514 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0
[ 55.013219][ T26] audit: type=1800 audit(1568292809.137:27): pid=8514 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0
[....] 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.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.0.148' (ECDSA) to the list of known hosts.
syzkaller login: [ 343.281006][ T8667] IPVS: ftp: loaded support on port[0] = 21
[ 343.342051][ T8667] chnl_net:caif_netlink_parms(): no params data found
[ 343.369190][ T8667] bridge0: port 1(bridge_slave_0) entered blocking state
[ 343.376992][ T8667] bridge0: port 1(bridge_slave_0) entered disabled state
[ 343.384855][ T8667] device bridge_slave_0 entered promiscuous mode
[ 343.393192][ T8667] bridge0: port 2(bridge_slave_1) entered blocking state
[ 343.400274][ T8667] bridge0: port 2(bridge_slave_1) entered disabled state
[ 343.408023][ T8667] device bridge_slave_1 entered promiscuous mode
[ 343.425862][ T8667] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 343.436291][ T8667] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 343.454869][ T8667] team0: Port device team_slave_0 added
[ 343.462270][ T8667] team0: Port device team_slave_1 added
[ 343.514291][ T8667] device hsr_slave_0 entered promiscuous mode
[ 343.561994][ T8667] device hsr_slave_1 entered promiscuous mode
[ 343.629802][ T8667] bridge0: port 2(bridge_slave_1) entered blocking state
[ 343.637029][ T8667] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 343.644893][ T8667] bridge0: port 1(bridge_slave_0) entered blocking state
[ 343.651995][ T8667] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 343.686204][ T8667] 8021q: adding VLAN 0 to HW filter on device bond0
[ 343.697159][ T8669] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 343.717652][ T8669] bridge0: port 1(bridge_slave_0) entered disabled state
[ 343.725873][ T8669] bridge0: port 2(bridge_slave_1) entered disabled state
[ 343.734960][ T8669] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 343.746353][ T8667] 8021q: adding VLAN 0 to HW filter on device team0
[ 343.763438][ T8673] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 343.773366][ T8673] bridge0: port 1(bridge_slave_0) entered blocking state
[ 343.780430][ T8673] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 343.788371][ T8673] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 343.797215][ T8673] bridge0: port 2(bridge_slave_1) entered blocking state
[ 343.804308][ T8673] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 343.822446][ T8669] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 343.830980][ T8669] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 343.840227][ T8669] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 343.850674][ T8669] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 343.860922][ T8667] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 343.869360][ T8669] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
executing program
[ 343.888103][ T8667] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 448.961625][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 448.968599][ C0] (detected by 0, t=10502 jiffies, g=7205, q=43)
[ 448.975007][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10501 (4294982044-4294971543), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 448.988345][ C0] swapper/0 R running task 28456 0 0 0x80004008
[ 448.996229][ C0] Call Trace:
[ 448.999503][ C0]
[ 449.002348][ C0] sched_show_task.cold+0x2ed/0x34e
[ 449.007619][ C0] rcu_sched_clock_irq.cold+0xac8/0xc13
[ 449.013160][ C0] update_process_times+0x32/0x80
[ 449.018259][ C0] tick_sched_handle+0xa2/0x190
[ 449.023186][ C0] tick_sched_timer+0x53/0x140
[ 449.027943][ C0] __hrtimer_run_queues+0x364/0xe40
[ 449.033127][ C0] ? tick_sched_do_timer+0x1b0/0x1b0
[ 449.038400][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0
[ 449.044186][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 449.049889][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440
[ 449.055942][ C0] hrtimer_interrupt+0x314/0x770
[ 449.060908][ C0] smp_apic_timer_interrupt+0x160/0x610
[ 449.066439][ C0] apic_timer_interrupt+0xf/0x20
[ 449.071796][ C0] RIP: 0010:__list_add_valid+0x19/0xa0
[ 449.077253][ C0] Code: e8 3c 53 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
[ 449.096942][ C0] RSP: 0018:ffff8880ae809018 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[ 449.105446][ C0] RAX: dffffc0000000000 RBX: ffff8880a13e82f8 RCX: ffffffff85c7e0d1
[ 449.113414][ C0] RDX: ffff8880a13e8390 RSI: ffff8880a13e8390 RDI: ffff8880a13e8398
[ 449.121374][ C0] RBP: ffff8880ae809028 R08: ffffffff88e7a1c0 R09: fffffbfff14e9555
[ 449.129781][ C0] R10: ffffffff88e7ab40 R11: ffffffff88e7a1c0 R12: dffffc0000000000
[ 449.137747][ C0] R13: ffff8880a13e82f8 R14: ffff8880a13e8398 R15: ffff8880a13e8390
[ 449.145719][ C0] ? apic_timer_interrupt+0xa/0x20
[ 449.150882][ C0] ? hhf_dequeue+0x5d1/0xa20
[ 449.155464][ C0] hhf_dequeue+0x66d/0xa20
[ 449.159908][ C0] __qdisc_run+0x1e7/0x19d0
[ 449.164418][ C0] ? dev_queue_xmit+0x18/0x20
[ 449.169081][ C0] __dev_queue_xmit+0x16f1/0x3650
[ 449.174087][ C0] ? __local_bh_enable_ip+0x15a/0x270
[ 449.179457][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 449.184729][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[ 449.190979][ C0] ? br_nf_post_routing+0xd73/0x1d30
[ 449.196286][ C0] ? br_forward_finish+0x235/0x400
[ 449.201389][ C0] ? find_held_lock+0x35/0x130
[ 449.206139][ C0] ? br_forward_finish+0x235/0x400
[ 449.211237][ C0] dev_queue_xmit+0x18/0x20
[ 449.215719][ C0] ? dev_queue_xmit+0x18/0x20
[ 449.220375][ C0] br_dev_queue_push_xmit+0x3f3/0x5c0
[ 449.225727][ C0] ? __kasan_check_read+0x11/0x20
[ 449.230733][ C0] br_forward_finish+0xfa/0x400
[ 449.235571][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 449.241115][ C0] ? br_fdb_add.cold+0x8c/0x8c
[ 449.245861][ C0] ? __kasan_check_read+0x11/0x20
[ 449.250873][ C0] __br_forward+0x641/0xb00
[ 449.255362][ C0] ? br_forward_finish+0x400/0x400
[ 449.260464][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 449.265994][ C0] deliver_clone+0x61/0xc0
[ 449.270392][ C0] maybe_deliver+0x2c7/0x390
[ 449.274964][ C0] br_flood+0x13a/0x3d0
[ 449.279105][ C0] br_dev_xmit+0x98c/0x15a0
[ 449.283592][ C0] ? br_poll_controller+0x10/0x10
[ 449.288596][ C0] ? netif_skb_features+0x6c2/0xb90
[ 449.293782][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 449.300007][ C0] dev_hard_start_xmit+0x1a3/0x9c0
[ 449.305104][ C0] __dev_queue_xmit+0x2b15/0x3650
[ 449.310109][ C0] ? __kasan_check_read+0x11/0x20
[ 449.315114][ C0] ? __lock_acquire+0x2b42/0x4c30
[ 449.320121][ C0] ? __lock_acquire+0x8a2/0x4c30
[ 449.325049][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 449.330322][ C0] ? __kasan_check_read+0x11/0x20
[ 449.335332][ C0] ? mark_lock+0xc0/0x11e0
[ 449.339736][ C0] ? mark_held_locks+0xa4/0xf0
[ 449.344526][ C0] ? ip_finish_output2+0x13e2/0x2570
[ 449.349791][ C0] ? __ip_finish_output+0x5fc/0xb90
[ 449.354971][ C0] ? ip_finish_output2+0x13e2/0x2570
[ 449.360240][ C0] dev_queue_xmit+0x18/0x20
[ 449.364723][ C0] ? dev_queue_xmit+0x18/0x20
[ 449.369385][ C0] ip_finish_output2+0x1726/0x2570
[ 449.374529][ C0] ? nf_ct_deliver_cached_events+0x23d/0x6e0
[ 449.380502][ C0] ? ip_frag_next+0x910/0x910
[ 449.385169][ C0] __ip_finish_output+0x5fc/0xb90
[ 449.390183][ C0] ? __ip_finish_output+0x5fc/0xb90
[ 449.395373][ C0] ? audit_alloc_mark+0x3d0/0x500
[ 449.400382][ C0] ip_finish_output+0x38/0x1f0
[ 449.405170][ C0] ip_output+0x21f/0x640
[ 449.409405][ C0] ? ip_mc_output+0xf40/0xf40
[ 449.414066][ C0] ? __ip_finish_output+0xb90/0xb90
[ 449.419259][ C0] ip_local_out+0xbb/0x190
[ 449.423693][ C0] igmpv3_sendpack+0x1b5/0x2c0
[ 449.428449][ C0] igmp_ifc_timer_expire+0x687/0xa00
[ 449.433724][ C0] call_timer_fn+0x1ac/0x780
[ 449.438298][ C0] ? __ip_mc_dec_group+0x520/0x520
[ 449.443402][ C0] ? msleep_interruptible+0x150/0x150
[ 449.448765][ C0] ? run_timer_softirq+0x685/0x17a0
[ 449.454650][ C0] ? trace_hardirqs_on+0x67/0x240
[ 449.459677][ C0] ? __kasan_check_read+0x11/0x20
[ 449.464692][ C0] ? __ip_mc_dec_group+0x520/0x520
[ 449.469784][ C0] ? __ip_mc_dec_group+0x520/0x520
[ 449.474885][ C0] run_timer_softirq+0x697/0x17a0
[ 449.479896][ C0] ? add_timer+0x930/0x930
[ 449.484306][ C0] ? kvm_clock_read+0x18/0x30
[ 449.488961][ C0] ? kvm_sched_clock_read+0x9/0x20
[ 449.494061][ C0] ? sched_clock+0x2e/0x50
[ 449.498456][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 449.504680][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 449.510921][ C0] __do_softirq+0x262/0x98c
[ 449.515407][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 449.520247][ C0] irq_exit+0x19b/0x1e0
[ 449.524387][ C0] smp_apic_timer_interrupt+0x1a3/0x610
[ 449.530176][ C0] apic_timer_interrupt+0xf/0x20
[ 449.535091][ C0]
[ 449.538078][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 449.543438][ C0] Code: a8 be 6b fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d e4 44 67 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d d4 44 67 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 0e 5d 1f fa e8 d9
[ 449.563023][ C0] RSP: 0018:ffffffff88e07ce8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 449.571425][ C0] RAX: 1ffffffff11e5e8d RBX: ffffffff88e7a1c0 RCX: 0000000000000000
[ 449.579465][ C0] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffffffff88e7aa4c
[ 449.587417][ C0] RBP: ffffffff88e07d18 R08: ffffffff88e7a1c0 R09: 0000000000000000
[ 449.595369][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
[ 449.603318][ C0] R13: ffffffff89c5aab8 R14: 0000000000000000 R15: 0000000000000000
[ 449.611293][ C0] ? default_idle+0x4e/0x360
[ 449.615881][ C0] arch_cpu_idle+0xa/0x10
[ 449.620191][ C0] default_idle_call+0x84/0xb0
[ 449.624940][ C0] do_idle+0x413/0x760
[ 449.628995][ C0] ? arch_cpu_idle_exit+0x80/0x80
[ 449.634000][ C0] ? trace_hardirqs_on+0x67/0x240
[ 449.639178][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 449.645398][ C0] ? debug_smp_processor_id+0x3c/0x214
[ 449.650860][ C0] cpu_startup_entry+0x1b/0x20
[ 449.655619][ C0] rest_init+0x245/0x37b
[ 449.659888][ C0] arch_call_rest_init+0xe/0x1b
[ 449.664720][ C0] start_kernel+0x912/0x951
[ 449.669212][ C0] ? mem_encrypt_init+0xb/0xb
[ 449.673876][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 449.680092][ C0] ? x86_family+0x41/0x50
[ 449.684408][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 449.690641][ C0] x86_64_start_reservations+0x29/0x2b
[ 449.696079][ C0] x86_64_start_kernel+0x77/0x7b
[ 449.701000][ C0] secondary_startup_64+0xa4/0xb0
[ 449.706107][ C0] rcu: rcu_preempt kthread starved for 10574 jiffies! g7205 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
[ 449.717187][ C0] rcu: RCU grace-period kthread stack dump:
[ 449.723054][ C0] rcu_preempt R running task 29440 10 2 0x80004000
[ 449.730933][ C0] Call Trace:
[ 449.734207][ C0] __schedule+0x755/0x1580
[ 449.738610][ C0] ? __sched_text_start+0x8/0x8
[ 449.743442][ C0] ? _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 449.749228][ C0] ? schedule_timeout+0x47c/0xc50
[ 449.754234][ C0] ? lockdep_hardirqs_on+0x418/0x5d0
[ 449.759500][ C0] schedule+0xd9/0x260
[ 449.763555][ C0] schedule_timeout+0x486/0xc50
[ 449.768384][ C0] ? _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 449.774184][ C0] ? usleep_range+0x170/0x170
[ 449.778852][ C0] ? trace_hardirqs_on+0x67/0x240
[ 449.783861][ C0] ? __kasan_check_read+0x11/0x20
[ 449.788867][ C0] ? __next_timer_interrupt+0x1a0/0x1a0
[ 449.794655][ C0] ? swake_up_one+0x60/0x60
[ 449.799144][ C0] rcu_gp_kthread+0x9b2/0x18c0
[ 449.803894][ C0] ? rcu_barrier+0x310/0x310
[ 449.808465][ C0] ? trace_hardirqs_on+0x67/0x240
[ 449.813470][ C0] ? __kasan_check_read+0x11/0x20
[ 449.818479][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 449.824705][ C0] ? __kthread_parkme+0x108/0x1c0
[ 449.829720][ C0] ? __kasan_check_read+0x11/0x20
[ 449.834726][ C0] kthread+0x361/0x430
[ 449.838777][ C0] ? rcu_barrier+0x310/0x310
[ 449.843790][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 449.850014][ C0] ret_from_fork+0x24/0x30