[ 66.682370][ T26] audit: type=1800 audit(1568462120.076:32): pid=10047 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 67.395319][ T26] audit: type=1800 audit(1568462120.896:33): pid=10047 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.209' (ECDSA) to the list of known hosts. syzkaller login: [ 210.177763][ T26] kauditd_printk_skb: 2 callbacks suppressed [ 210.177777][ T26] audit: type=1400 audit(1568462263.676:36): avc: denied { map } for pid=10238 comm="syz-executor163" path="/root/syz-executor163571997" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 210.212427][T10239] IPVS: ftp: loaded support on port[0] = 21 [ 210.259404][T10239] chnl_net:caif_netlink_parms(): no params data found [ 210.280487][T10239] bridge0: port 1(bridge_slave_0) entered blocking state [ 210.287611][T10239] bridge0: port 1(bridge_slave_0) entered disabled state [ 210.295095][T10239] device bridge_slave_0 entered promiscuous mode [ 210.302346][T10239] bridge0: port 2(bridge_slave_1) entered blocking state [ 210.309388][T10239] bridge0: port 2(bridge_slave_1) entered disabled state [ 210.316957][T10239] device bridge_slave_1 entered promiscuous mode [ 210.329805][T10239] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 210.340237][T10239] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 210.355997][T10239] team0: Port device team_slave_0 added [ 210.362733][T10239] team0: Port device team_slave_1 added [ 210.442567][T10239] device hsr_slave_0 entered promiscuous mode [ 210.491250][T10239] device hsr_slave_1 entered promiscuous mode [ 210.566057][T10239] bridge0: port 2(bridge_slave_1) entered blocking state [ 210.573178][T10239] bridge0: port 2(bridge_slave_1) entered forwarding state [ 210.580456][T10239] bridge0: port 1(bridge_slave_0) entered blocking state [ 210.587538][T10239] bridge0: port 1(bridge_slave_0) entered forwarding state [ 210.612888][T10239] 8021q: adding VLAN 0 to HW filter on device bond0 [ 210.623424][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 210.632160][ T3014] bridge0: port 1(bridge_slave_0) entered disabled state [ 210.639583][ T3014] bridge0: port 2(bridge_slave_1) entered disabled state [ 210.647268][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 210.658174][T10239] 8021q: adding VLAN 0 to HW filter on device team0 [ 210.667210][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 210.675505][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 210.682541][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 210.691827][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 210.700080][ T3014] bridge0: port 2(bridge_slave_1) entered blocking state [ 210.707163][ T3014] bridge0: port 2(bridge_slave_1) entered forwarding state [ 210.720140][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 210.729160][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 210.738833][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 210.752141][T10239] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network executing program [ 210.762824][T10239] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 210.774063][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 210.782192][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 210.790216][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 210.804134][T10239] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 315.980914][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 315.987569][ C0] rcu: 0-...!: (1 GPs behind) idle=9de/1/0x4000000000000002 softirq=10810/10811 fqs=22 [ 315.997358][ C0] (t=10501 jiffies g=9893 q=16) [ 316.002277][ C0] rcu: rcu_preempt kthread starved for 10458 jiffies! g9893 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 316.013523][ C0] rcu: RCU grace-period kthread stack dump: [ 316.019389][ C0] rcu_preempt I29688 10 2 0x80004000 [ 316.025712][ C0] Call Trace: [ 316.029086][ C0] __schedule+0x755/0x1580 [ 316.033488][ C0] ? __sched_text_start+0x8/0x8 [ 316.038319][ C0] schedule+0xd9/0x260 [ 316.042367][ C0] schedule_timeout+0x486/0xc50 [ 316.047198][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 316.052112][ C0] ? usleep_range+0x170/0x170 [ 316.056765][ C0] ? trace_hardirqs_on+0x67/0x240 [ 316.061768][ C0] ? __kasan_check_read+0x11/0x20 [ 316.066773][ C0] ? __next_timer_interrupt+0x1a0/0x1a0 [ 316.072297][ C0] ? swake_up_one+0x60/0x60 [ 316.076781][ C0] rcu_gp_kthread+0x9b2/0x18c0 [ 316.081525][ C0] ? rcu_barrier+0x310/0x310 [ 316.086092][ C0] ? trace_hardirqs_on+0x67/0x240 [ 316.091094][ C0] ? __kasan_check_read+0x11/0x20 [ 316.096102][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 316.102320][ C0] ? __kthread_parkme+0x108/0x1c0 [ 316.107321][ C0] ? __kasan_check_read+0x11/0x20 [ 316.112324][ C0] kthread+0x361/0x430 [ 316.116372][ C0] ? rcu_barrier+0x310/0x310 [ 316.120939][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 316.127171][ C0] ret_from_fork+0x24/0x30 [ 316.131593][ C0] NMI backtrace for cpu 0 [ 316.135916][ C0] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.3.0-rc8+ #0 [ 316.143171][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 316.153296][ C0] Workqueue: ipv6_addrconf addrconf_dad_work [ 316.159265][ C0] Call Trace: [ 316.162528][ C0] [ 316.165390][ C0] dump_stack+0x172/0x1f0 [ 316.169700][ C0] nmi_cpu_backtrace.cold+0x70/0xb2 [ 316.174911][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 316.181187][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 316.186798][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 316.192759][ C0] arch_trigger_cpumask_backtrace+0x14/0x20 [ 316.198632][ C0] rcu_dump_cpu_stacks+0x183/0x1cf [ 316.203725][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 316.209248][ C0] ? raise_softirq+0x138/0x340 [ 316.213996][ C0] update_process_times+0x32/0x80 [ 316.219001][ C0] tick_sched_handle+0xa2/0x190 [ 316.223829][ C0] tick_sched_timer+0x53/0x140 [ 316.228576][ C0] __hrtimer_run_queues+0x364/0xe40 [ 316.233753][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 316.239018][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 316.244542][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 316.250237][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 316.256294][ C0] hrtimer_interrupt+0x314/0x770 [ 316.261260][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 316.266876][ C0] apic_timer_interrupt+0xf/0x20 [ 316.271795][ C0] RIP: 0010:__list_del_entry_valid+0x4b/0xf5 [ 316.277755][ C0] Code: 54 80 3c 02 00 0f 85 a1 00 00 00 4c 89 f2 4d 8b 66 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 9d 00 00 00 <48> b8 00 01 00 00 00 00 ad de 4d 8b 2e 49 39 c5 0f 84 e1 00 00 00 [ 316.297352][ C0] RSP: 0018:ffff8880ae808b20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 316.305743][ C0] RAX: dffffc0000000000 RBX: ffff8880a436e7b8 RCX: ffffffff85c66b39 [ 316.313693][ C0] RDX: 1ffff1101486dcf7 RSI: ffffffff85c67006 RDI: ffff8880a436e7c0 [ 316.321642][ C0] RBP: ffff8880ae808b38 R08: ffff8880a9874140 R09: 0000000000000000 [ 316.329592][ C0] R10: fffffbfff134afaf R11: ffff8880a9874140 R12: ffff8880a436e850 [ 316.337552][ C0] R13: ffff8880a436e4c0 R14: ffff8880a436e7b8 R15: 0000000000000000 [ 316.345511][ C0] ? apic_timer_interrupt+0xa/0x20 [ 316.350642][ C0] ? hhf_dequeue+0xb9/0xa20 [ 316.355137][ C0] ? hhf_dequeue+0x586/0xa20 [ 316.359710][ C0] hhf_dequeue+0x5c5/0xa20 [ 316.364147][ C0] __qdisc_run+0x1e7/0x19d0 [ 316.368655][ C0] ? dev_queue_xmit+0x18/0x20 [ 316.373328][ C0] __dev_queue_xmit+0x16f1/0x3650 [ 316.378347][ C0] ? process_backlog+0x206/0x750 [ 316.383261][ C0] ? net_rx_action+0x4d6/0x1030 [ 316.388091][ C0] ? __do_softirq+0x262/0x98c [ 316.392753][ C0] ? do_softirq_own_stack+0x2a/0x40 [ 316.397930][ C0] ? do_softirq.part.0+0x11a/0x170 [ 316.403036][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 316.408303][ C0] ? quarantine_put+0x11c/0x1c0 [ 316.413203][ C0] ? trace_hardirqs_on+0x67/0x240 [ 316.418307][ C0] ? __skb_ext_put+0xd9/0x210 [ 316.422971][ C0] dev_queue_xmit+0x18/0x20 [ 316.427471][ C0] ? dev_queue_xmit+0x18/0x20 [ 316.432159][ C0] br_dev_queue_push_xmit+0x3f3/0x5c0 [ 316.437518][ C0] ? __skb_ext_del+0xb0/0x2c0 [ 316.442177][ C0] ? lock_downgrade+0x920/0x920 [ 316.447039][ C0] br_nf_dev_queue_xmit+0x34e/0x1470 [ 316.452306][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 316.458007][ C0] br_nf_post_routing+0x1502/0x1d30 [ 316.463187][ C0] ? br_nf_dev_queue_xmit+0x1470/0x1470 [ 316.468711][ C0] ? mark_held_locks+0xf0/0xf0 [ 316.473451][ C0] ? nf_bridge_update_protocol+0x1d0/0x1d0 [ 316.479247][ C0] ? __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 316.485086][ C0] nf_hook_slow+0xbc/0x1e0 [ 316.489481][ C0] br_forward_finish+0x215/0x400 [ 316.494400][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 316.499924][ C0] ? br_fdb_add.cold+0x8c/0x8c [ 316.504705][ C0] ? ip_vs_out+0x244/0x1700 [ 316.509189][ C0] ? selinux_ip_forward+0x1a5/0x4e0 [ 316.514372][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 316.520071][ C0] ? nf_hook_slow+0xf0/0x1e0 [ 316.524641][ C0] br_nf_hook_thresh+0x2e9/0x370 [ 316.529571][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 316.535106][ C0] ? setup_pre_routing+0x4b0/0x4b0 [ 316.540200][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 316.545722][ C0] ? br_nf_forward_finish+0x176/0xa90 [ 316.551074][ C0] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 316.556944][ C0] br_nf_forward_finish+0x66c/0xa90 [ 316.562130][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 316.567652][ C0] br_nf_forward_ip+0xc74/0x21e0 [ 316.572570][ C0] ? br_nf_forward_arp+0x1670/0x1670 [ 316.577832][ C0] ? mark_held_locks+0xf0/0xf0 [ 316.582574][ C0] ? br_nf_hook_thresh+0x370/0x370 [ 316.587698][ C0] ? __vlan_flush+0x120/0x120 [ 316.592358][ C0] nf_hook_slow+0xbc/0x1e0 [ 316.596754][ C0] __br_forward+0x393/0xb00 [ 316.601247][ C0] ? br_forward_finish+0x400/0x400 [ 316.606339][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 316.611863][ C0] deliver_clone+0x61/0xc0 [ 316.616257][ C0] br_flood+0x325/0x3d0 [ 316.620395][ C0] br_handle_frame_finish+0xb46/0x1670 [ 316.625847][ C0] ? br_handle_local_finish+0x20/0x20 [ 316.631197][ C0] ? audit_alloc_mark+0x420/0x500 [ 316.636215][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 316.641917][ C0] ? nf_hook_slow+0xf0/0x1e0 [ 316.646484][ C0] br_nf_hook_thresh+0x2e9/0x370 [ 316.651402][ C0] ? br_handle_local_finish+0x20/0x20 [ 316.656751][ C0] ? setup_pre_routing+0x4b0/0x4b0 [ 316.661840][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 316.668071][ C0] ? br_handle_local_finish+0x20/0x20 [ 316.673431][ C0] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 316.679312][ C0] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 316.685184][ C0] br_nf_pre_routing_finish_ipv6+0x6fb/0xd80 [ 316.691141][ C0] ? br_handle_local_finish+0x20/0x20 [ 316.696494][ C0] br_nf_pre_routing_ipv6+0x456/0x832 [ 316.701844][ C0] ? br_validate_ipv6+0xb80/0xb80 [ 316.706847][ C0] ? br_nf_pre_routing_finish.cold+0x124/0x124 [ 316.712978][ C0] ? br_nf_pre_routing+0x246/0x2355 [ 316.718155][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 316.724375][ C0] ? skb_pull_rcsum+0x155/0x300 [ 316.729205][ C0] br_nf_pre_routing+0x1743/0x2355 [ 316.734296][ C0] ? br_nf_pre_routing_finish+0x1730/0x1730 [ 316.740169][ C0] ? br_nf_pre_routing_finish+0x1730/0x1730 [ 316.746038][ C0] br_handle_frame+0x806/0x133e [ 316.750869][ C0] ? br_handle_frame_finish+0x1670/0x1670 [ 316.756581][ C0] ? br_handle_local_finish+0x20/0x20 [ 316.761943][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 316.768165][ C0] ? br_handle_frame_finish+0x1670/0x1670 [ 316.773865][ C0] __netif_receive_skb_core+0xfc1/0x3060 [ 316.779479][ C0] ? find_next_and_bit+0x19a/0x200 [ 316.784575][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 316.790802][ C0] ? do_xdp_generic+0x50/0x50 [ 316.795459][ C0] ? load_balance+0x375/0x2680 [ 316.800212][ C0] ? rcu_report_qs_rnp+0x167/0x400 [ 316.805303][ C0] ? __kasan_check_read+0x11/0x20 [ 316.810457][ C0] __netif_receive_skb_one_core+0xa8/0x1a0 [ 316.816246][ C0] ? __netif_receive_skb_one_core+0xa8/0x1a0 [ 316.822211][ C0] ? __kasan_check_write+0x14/0x20 [ 316.827301][ C0] ? __netif_receive_skb_core+0x3060/0x3060 [ 316.833176][ C0] ? lock_acquire+0x190/0x410 [ 316.837836][ C0] ? process_backlog+0x195/0x750 [ 316.842789][ C0] __netif_receive_skb+0x2c/0x1d0 [ 316.847795][ C0] process_backlog+0x206/0x750 [ 316.852540][ C0] ? __kasan_check_read+0x11/0x20 [ 316.857547][ C0] net_rx_action+0x4d6/0x1030 [ 316.862206][ C0] ? napi_complete_done+0x4b0/0x4b0 [ 316.867380][ C0] ? sched_clock+0x2e/0x50 [ 316.871788][ C0] ? ip6_finish_output2+0x106d/0x2520 [ 316.877140][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 316.883361][ C0] __do_softirq+0x262/0x98c [ 316.887845][ C0] ? ip6_finish_output2+0x106d/0x2520 [ 316.893199][ C0] do_softirq_own_stack+0x2a/0x40 [ 316.898197][ C0] [ 316.901116][ C0] do_softirq.part.0+0x11a/0x170 [ 316.906031][ C0] __local_bh_enable_ip+0x211/0x270 [ 316.911207][ C0] ip6_finish_output2+0x10a0/0x2520 [ 316.916382][ C0] ? ip6_mtu+0x2e6/0x460 [ 316.920601][ C0] ? ip6_forward_finish+0x530/0x530 [ 316.925781][ C0] ? lock_downgrade+0x920/0x920 [ 316.930625][ C0] ? ip6_mtu+0x16f/0x460 [ 316.934849][ C0] __ip6_finish_output+0x444/0xa50 [ 316.939936][ C0] ? __ip6_finish_output+0x444/0xa50 [ 316.945199][ C0] ip6_finish_output+0x38/0x1f0 [ 316.950042][ C0] ip6_output+0x235/0x7c0 [ 316.954351][ C0] ? ip6_finish_output+0x1f0/0x1f0 [ 316.959439][ C0] ? __ip6_finish_output+0xa50/0xa50 [ 316.964778][ C0] ? ndisc_send_skb+0x803/0x1450 [ 316.969701][ C0] ndisc_send_skb+0xf29/0x1450 [ 316.974454][ C0] ? nf_hook.constprop.0+0x560/0x560 [ 316.979722][ C0] ? skb_set_owner_w+0x21b/0x320 [ 316.984640][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 316.990338][ C0] ndisc_send_ns+0x3a9/0x850 [ 316.994910][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 317.001130][ C0] ? ndisc_netdev_event+0x4e0/0x4e0 [ 317.006306][ C0] ? addrconf_dad_work+0xac4/0x1150 [ 317.011482][ C0] ? trace_hardirqs_on+0x67/0x240 [ 317.016494][ C0] ? addrconf_dad_work+0xac4/0x1150 [ 317.021676][ C0] addrconf_dad_work+0xb88/0x1150 [ 317.026702][ C0] ? addrconf_dad_completed+0xbb0/0xbb0 [ 317.032228][ C0] ? lock_acquire+0x190/0x410 [ 317.036884][ C0] ? trace_hardirqs_on+0x67/0x240 [ 317.041888][ C0] process_one_work+0x9af/0x1740 [ 317.046808][ C0] ? pwq_dec_nr_in_flight+0x320/0x320 [ 317.052156][ C0] ? lock_acquire+0x190/0x410 [ 317.056815][ C0] worker_thread+0x98/0xe40 [ 317.061316][ C0] kthread+0x361/0x430 [ 317.065363][ C0] ? process_one_work+0x1740/0x1740 [ 317.070550][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 317.076783][ C0] ret_from_fork+0x24/0x30