[....] 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.
[ 65.158971][ T26] kauditd_printk_skb: 7 callbacks suppressed
[ 65.158980][ T26] audit: type=1800 audit(1568475576.697:29): pid=9695 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
[ 65.185314][ T26] audit: type=1800 audit(1568475576.707:30): pid=9695 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 '10.128.0.56' (ECDSA) to the list of known hosts.
syzkaller login: [ 300.973329][ T9847] IPVS: ftp: loaded support on port[0] = 21
[ 301.021147][ T9847] chnl_net:caif_netlink_parms(): no params data found
[ 301.043560][ T9847] bridge0: port 1(bridge_slave_0) entered blocking state
[ 301.050876][ T9847] bridge0: port 1(bridge_slave_0) entered disabled state
[ 301.058377][ T9847] device bridge_slave_0 entered promiscuous mode
[ 301.065686][ T9847] bridge0: port 2(bridge_slave_1) entered blocking state
[ 301.072800][ T9847] bridge0: port 2(bridge_slave_1) entered disabled state
[ 301.080414][ T9847] device bridge_slave_1 entered promiscuous mode
[ 301.094156][ T9847] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 301.105150][ T9847] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 301.121157][ T9847] team0: Port device team_slave_0 added
[ 301.127619][ T9847] team0: Port device team_slave_1 added
[ 301.201449][ T9847] device hsr_slave_0 entered promiscuous mode
[ 301.269914][ T9847] device hsr_slave_1 entered promiscuous mode
[ 301.335346][ T9847] bridge0: port 2(bridge_slave_1) entered blocking state
[ 301.342633][ T9847] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 301.350029][ T9847] bridge0: port 1(bridge_slave_0) entered blocking state
[ 301.357116][ T9847] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 301.382193][ T9847] 8021q: adding VLAN 0 to HW filter on device bond0
[ 301.392753][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 301.401430][ T12] bridge0: port 1(bridge_slave_0) entered disabled state
[ 301.408940][ T12] bridge0: port 2(bridge_slave_1) entered disabled state
[ 301.417304][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 301.427122][ T9847] 8021q: adding VLAN 0 to HW filter on device team0
[ 301.436286][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 301.444636][ T3516] bridge0: port 1(bridge_slave_0) entered blocking state
[ 301.451683][ T3516] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 301.461470][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 301.470141][ T12] bridge0: port 2(bridge_slave_1) entered blocking state
[ 301.477295][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 301.495131][ T9847] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
[ 301.505763][ T9847] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[ 301.518191][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 301.526939][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 301.535578][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
executing program
[ 301.543882][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 301.552058][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 301.559605][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 301.573968][ T9847] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 406.709544][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU
[ 406.716193][ C1] rcu: 1-...!: (10499 ticks this GP) idle=0ae/0/0x3 softirq=9023/9023 fqs=6
[ 406.725162][ C1] (t=10501 jiffies g=9361 q=46)
[ 406.730078][ C1] rcu: rcu_preempt kthread starved for 10490 jiffies! g9361 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
[ 406.741323][ C1] rcu: RCU grace-period kthread stack dump:
[ 406.747200][ C1] rcu_preempt I29688 10 2 0x80004000
[ 406.753522][ C1] Call Trace:
[ 406.757000][ C1] __schedule+0x755/0x1580
[ 406.761403][ C1] ? __sched_text_start+0x8/0x8
[ 406.766242][ C1] schedule+0xd9/0x260
[ 406.770292][ C1] schedule_timeout+0x486/0xc50
[ 406.775119][ C1] ? rwlock_bug.part.0+0x90/0x90
[ 406.780033][ C1] ? usleep_range+0x170/0x170
[ 406.784685][ C1] ? trace_hardirqs_on+0x67/0x240
[ 406.789864][ C1] ? __kasan_check_read+0x11/0x20
[ 406.794965][ C1] ? __next_timer_interrupt+0x1a0/0x1a0
[ 406.800491][ C1] ? swake_up_one+0x60/0x60
[ 406.804976][ C1] rcu_gp_kthread+0x9b2/0x18c0
[ 406.809729][ C1] ? rcu_barrier+0x310/0x310
[ 406.814299][ C1] ? trace_hardirqs_on+0x67/0x240
[ 406.819301][ C1] ? __kasan_check_read+0x11/0x20
[ 406.824308][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 406.830531][ C1] ? __kthread_parkme+0x108/0x1c0
[ 406.835533][ C1] ? __kasan_check_read+0x11/0x20
[ 406.840541][ C1] kthread+0x361/0x430
[ 406.844587][ C1] ? rcu_barrier+0x310/0x310
[ 406.849161][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 406.855392][ C1] ret_from_fork+0x24/0x30
[ 406.859813][ C1] NMI backtrace for cpu 1
[ 406.864126][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0-rc8+ #0
[ 406.871209][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 406.881241][ C1] Call Trace:
[ 406.884507][ C1]
[ 406.887391][ C1] dump_stack+0x172/0x1f0
[ 406.891704][ C1] nmi_cpu_backtrace.cold+0x70/0xb2
[ 406.896969][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 406.903199][ C1] ? lapic_can_unplug_cpu.cold+0x45/0x45
[ 406.908816][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b
[ 406.914775][ C1] arch_trigger_cpumask_backtrace+0x14/0x20
[ 406.920645][ C1] rcu_dump_cpu_stacks+0x183/0x1cf
[ 406.925736][ C1] rcu_sched_clock_irq.cold+0x4dd/0xc13
[ 406.931261][ C1] ? raise_softirq+0x138/0x340
[ 406.936006][ C1] update_process_times+0x32/0x80
[ 406.941012][ C1] tick_sched_handle+0xa2/0x190
[ 406.945927][ C1] tick_sched_timer+0x53/0x140
[ 406.950675][ C1] __hrtimer_run_queues+0x364/0xe40
[ 406.955858][ C1] ? tick_sched_do_timer+0x1b0/0x1b0
[ 406.961120][ C1] ? hrtimer_start_range_ns+0xcb0/0xcb0
[ 406.966648][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 406.972435][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440
[ 406.978477][ C1] hrtimer_interrupt+0x314/0x770
[ 406.983443][ C1] smp_apic_timer_interrupt+0x160/0x610
[ 406.988974][ C1] apic_timer_interrupt+0xf/0x20
[ 406.993917][ C1] RIP: 0010:hhf_dequeue+0x6ba/0xa20
[ 407.001618][ C1] Code: e8 03 42 80 3c 20 00 0f 85 08 03 00 00 48 89 d8 49 89 9d 98 03 00 00 48 c1 e8 03 42 80 3c 20 00 0f 85 b4 02 00 00 48 8b 45 c8 <48> 8d 7b 08 48 89 03 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 85 8d
[ 407.021202][ C1] RSP: 0018:ffff8880ae908af8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[ 407.029599][ C1] RAX: ffff88809bfcecd0 RBX: ffff88809bfcec38 RCX: ffffffff85c670f9
[ 407.037548][ C1] RDX: 0000000000000100 RSI: ffffffff85c6710b RDI: 0000000000000001
[ 407.045498][ C1] RBP: ffff8880ae908b48 R08: ffff8880a98c6340 R09: 0000000000000000
[ 407.053454][ C1] R10: fffffbfff134afaf R11: ffff8880a98c6340 R12: dffffc0000000000
[ 407.061410][ C1] R13: ffff88809bfce940 R14: ffff88809bfcecd8 R15: ffff88809bfcecd0
[ 407.069379][ C1] ? apic_timer_interrupt+0xa/0x20
[ 407.074471][ C1] ? hhf_dequeue+0x679/0xa20
[ 407.079045][ C1] ? hhf_dequeue+0x68b/0xa20
[ 407.083626][ C1] ? hhf_dequeue+0x68b/0xa20
[ 407.088269][ C1] __qdisc_run+0x1e7/0x19d0
[ 407.092803][ C1] ? dev_queue_xmit+0x18/0x20
[ 407.097473][ C1] __dev_queue_xmit+0x16f1/0x3650
[ 407.102475][ C1] ? process_backlog+0x206/0x750
[ 407.107392][ C1] ? net_rx_action+0x4d6/0x1030
[ 407.112228][ C1] ? __do_softirq+0x262/0x98c
[ 407.116884][ C1] ? irq_exit+0x19b/0x1e0
[ 407.121193][ C1] ? smp_apic_timer_interrupt+0x1a3/0x610
[ 407.126900][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 407.132173][ C1] ? quarantine_put+0x11c/0x1c0
[ 407.137004][ C1] ? trace_hardirqs_on+0x67/0x240
[ 407.142055][ C1] ? __skb_ext_put+0xd9/0x210
[ 407.147073][ C1] dev_queue_xmit+0x18/0x20
[ 407.151554][ C1] ? dev_queue_xmit+0x18/0x20
[ 407.156249][ C1] br_dev_queue_push_xmit+0x3f3/0x5c0
[ 407.161598][ C1] ? __skb_ext_del+0xb0/0x2c0
[ 407.166261][ C1] ? lock_downgrade+0x920/0x920
[ 407.171123][ C1] br_nf_dev_queue_xmit+0x34e/0x1470
[ 407.176395][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 407.182093][ C1] br_nf_post_routing+0x1502/0x1d30
[ 407.187271][ C1] ? br_nf_dev_queue_xmit+0x1470/0x1470
[ 407.192807][ C1] ? mark_held_locks+0xf0/0xf0
[ 407.197551][ C1] ? nf_bridge_update_protocol+0x1d0/0x1d0
[ 407.203336][ C1] ? __kasan_kmalloc.constprop.0+0xcf/0xe0
[ 407.209186][ C1] nf_hook_slow+0xbc/0x1e0
[ 407.213603][ C1] br_forward_finish+0x215/0x400
[ 407.218542][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 407.224074][ C1] ? br_fdb_add.cold+0x8c/0x8c
[ 407.228868][ C1] ? ip_vs_out+0x244/0x1700
[ 407.233352][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 407.239046][ C1] ? nf_hook_slow+0xf0/0x1e0
[ 407.243614][ C1] ? should_fail+0x1de/0x852
[ 407.248182][ C1] br_nf_hook_thresh+0x2e9/0x370
[ 407.253097][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 407.258620][ C1] ? setup_pre_routing+0x4b0/0x4b0
[ 407.263707][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 407.269241][ C1] ? br_nf_forward_finish+0x176/0xa90
[ 407.274596][ C1] ? __sanitizer_cov_trace_switch+0x49/0x80
[ 407.280465][ C1] br_nf_forward_finish+0x66c/0xa90
[ 407.285641][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 407.291179][ C1] br_nf_forward_ip+0xc74/0x21e0
[ 407.296106][ C1] ? br_nf_forward_arp+0x1670/0x1670
[ 407.301372][ C1] ? mark_held_locks+0xf0/0xf0
[ 407.306114][ C1] ? br_nf_hook_thresh+0x370/0x370
[ 407.311250][ C1] ? __vlan_flush+0x120/0x120
[ 407.315909][ C1] nf_hook_slow+0xbc/0x1e0
[ 407.320309][ C1] __br_forward+0x393/0xb00
[ 407.324789][ C1] ? br_forward_finish+0x400/0x400
[ 407.329888][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 407.335411][ C1] deliver_clone+0x61/0xc0
[ 407.339804][ C1] br_flood+0x325/0x3d0
[ 407.343940][ C1] br_handle_frame_finish+0xb46/0x1670
[ 407.349378][ C1] ? br_handle_local_finish+0x20/0x20
[ 407.354729][ C1] ? __dev_queue_xmit+0x17e0/0x3650
[ 407.359911][ C1] ? audit_alloc_mark+0x420/0x500
[ 407.364923][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 407.370620][ C1] ? nf_hook_slow+0xf0/0x1e0
[ 407.375202][ C1] br_nf_hook_thresh+0x2e9/0x370
[ 407.380118][ C1] ? br_handle_local_finish+0x20/0x20
[ 407.385466][ C1] ? setup_pre_routing+0x4b0/0x4b0
[ 407.390555][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 407.396858][ C1] ? br_handle_local_finish+0x20/0x20
[ 407.402220][ C1] ? __sanitizer_cov_trace_switch+0x49/0x80
[ 407.408091][ C1] ? __sanitizer_cov_trace_switch+0x49/0x80
[ 407.413962][ C1] br_nf_pre_routing_finish_ipv6+0x6fb/0xd80
[ 407.419927][ C1] ? br_handle_local_finish+0x20/0x20
[ 407.425277][ C1] br_nf_pre_routing_ipv6+0x456/0x832
[ 407.430624][ C1] ? br_validate_ipv6+0xb80/0xb80
[ 407.435628][ C1] ? br_nf_pre_routing_finish.cold+0x124/0x124
[ 407.441758][ C1] ? br_nf_pre_routing+0x246/0x2355
[ 407.446934][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 407.453155][ C1] ? skb_pull_rcsum+0x155/0x300
[ 407.457985][ C1] br_nf_pre_routing+0x1743/0x2355
[ 407.463191][ C1] ? br_nf_pre_routing_finish+0x1730/0x1730
[ 407.469085][ C1] ? br_nf_pre_routing_finish+0x1730/0x1730
[ 407.474974][ C1] br_handle_frame+0x806/0x133e
[ 407.479813][ C1] ? br_handle_frame_finish+0x1670/0x1670
[ 407.485515][ C1] ? update_sd_lb_stats+0x2940/0x2940
[ 407.490966][ C1] ? br_handle_local_finish+0x20/0x20
[ 407.496328][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 407.502544][ C1] ? br_handle_frame_finish+0x1670/0x1670
[ 407.508253][ C1] __netif_receive_skb_core+0xfc1/0x3060
[ 407.513866][ C1] ? __sanitizer_cov_trace_cmp2+0x20/0x20
[ 407.519649][ C1] ? do_xdp_generic+0x50/0x50
[ 407.525277][ C1] ? load_balance+0x375/0x2680
[ 407.530023][ C1] ? refcount_dec_not_one+0x1f0/0x1f0
[ 407.535385][ C1] __netif_receive_skb_one_core+0xa8/0x1a0
[ 407.541173][ C1] ? __netif_receive_skb_one_core+0xa8/0x1a0
[ 407.547136][ C1] ? __kasan_check_write+0x14/0x20
[ 407.552238][ C1] ? __netif_receive_skb_core+0x3060/0x3060
[ 407.558114][ C1] ? lock_acquire+0x190/0x410
[ 407.562768][ C1] ? process_backlog+0x195/0x750
[ 407.567684][ C1] __netif_receive_skb+0x2c/0x1d0
[ 407.572688][ C1] process_backlog+0x206/0x750
[ 407.577434][ C1] net_rx_action+0x4d6/0x1030
[ 407.582192][ C1] ? napi_complete_done+0x4b0/0x4b0
[ 407.587377][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 407.593606][ C1] __do_softirq+0x262/0x98c
[ 407.598091][ C1] ? sched_clock_cpu+0x1b/0x1b0
[ 407.602925][ C1] irq_exit+0x19b/0x1e0
[ 407.607062][ C1] smp_apic_timer_interrupt+0x1a3/0x610
[ 407.612585][ C1] apic_timer_interrupt+0xf/0x20
[ 407.617499][ C1]
[ 407.620419][ C1] RIP: 0010:native_safe_halt+0xe/0x10
[ 407.625776][ C1] Code: 88 63 6e fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 24 0b 4a 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 14 0b 4a 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 2e 23 22 fa e8 f9
[ 407.645356][ C1] RSP: 0018:ffff8880a98dfd68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 407.653751][ C1] RAX: 1ffffffff11a5e8d RBX: ffff8880a98c6340 RCX: 1ffffffff134b5ee
[ 407.661711][ C1] RDX: dffffc0000000000 RSI: ffffffff8177f15e RDI: ffffffff873e150c
[ 407.669670][ C1] RBP: ffff8880a98dfd98 R08: ffff8880a98c6340 R09: ffffed1015318c69
[ 407.677637][ C1] R10: ffffed1015318c68 R11: ffff8880a98c6347 R12: dffffc0000000000
[ 407.685591][ C1] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000001
[ 407.693593][ C1] ? trace_hardirqs_on+0x5e/0x240
[ 407.698658][ C1] ? default_idle+0x1c/0x360
[ 407.703250][ C1] ? default_idle+0x4e/0x360
[ 407.707826][ C1] arch_cpu_idle+0xa/0x10
[ 407.712135][ C1] default_idle_call+0x84/0xb0
[ 407.716882][ C1] do_idle+0x413/0x760
[ 407.720943][ C1] ? arch_cpu_idle_exit+0x80/0x80
[ 407.725961][ C1] cpu_startup_entry+0x1b/0x20
[ 407.730704][ C1] start_secondary+0x315/0x430
[ 407.735450][ C1] ? set_cpu_sibling_map+0x2180/0x2180
[ 407.740892][ C1] secondary_startup_64+0xa4/0xb0