[....] 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. [ 38.419807] audit: type=1800 audit(1568085382.739:33): pid=7339 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=2465 res=0 [ 38.445260] audit: type=1800 audit(1568085382.739:34): pid=7339 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 [ 39.270731] audit: type=1400 audit(1568085383.589:35): avc: denied { map } for pid=7516 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.202' (ECDSA) to the list of known hosts. syzkaller login: [ 45.841146] audit: type=1400 audit(1568085390.159:36): avc: denied { map } for pid=7529 comm="syz-executor161" path="/root/syz-executor161337344" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 45.869061] IPVS: ftp: loaded support on port[0] = 21 [ 45.922288] chnl_net:caif_netlink_parms(): no params data found [ 45.954816] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.961669] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.969295] device bridge_slave_0 entered promiscuous mode [ 45.976827] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.983216] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.990359] device bridge_slave_1 entered promiscuous mode [ 46.006420] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 46.015195] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 46.031807] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 46.039548] team0: Port device team_slave_0 added [ 46.045010] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 46.052386] team0: Port device team_slave_1 added [ 46.057633] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 46.064887] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 46.128707] device hsr_slave_0 entered promiscuous mode [ 46.177282] device hsr_slave_1 entered promiscuous mode [ 46.217155] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 46.224167] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 46.239808] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.246323] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.253299] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.259688] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.289710] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 46.295809] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.305904] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 46.314371] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 46.333933] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.341397] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.349515] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 46.360858] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 46.367146] 8021q: adding VLAN 0 to HW filter on device team0 [ 46.376651] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 46.384469] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.390858] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.401137] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 46.409024] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.415359] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.431721] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 46.439995] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 46.450355] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 46.462847] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 46.473193] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network executing program [ 46.485488] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 46.492611] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 46.500738] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 46.508474] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 46.521227] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 46.531390] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 151.546365] rcu: INFO: rcu_preempt self-detected stall on CPU [ 151.552558] rcu: 1-...!: (1 GPs behind) idle=c5a/1/0x4000000000000002 softirq=10602/10603 fqs=36 [ 151.561838] rcu: (t=10501 jiffies g=5073 q=102) [ 151.566691] rcu: rcu_preempt kthread starved for 10430 jiffies! g5073 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 151.577244] rcu: RCU grace-period kthread stack dump: [ 151.582416] rcu_preempt I29104 10 2 0x80000000 [ 151.588037] Call Trace: [ 151.590626] __schedule+0x866/0x1dc0 [ 151.594333] ? pci_mmcfg_check_reserved+0x170/0x170 [ 151.599338] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 151.604429] ? lockdep_hardirqs_on+0x415/0x5d0 [ 151.609002] ? trace_hardirqs_on+0x67/0x220 [ 151.613398] schedule+0x92/0x1c0 [ 151.616752] schedule_timeout+0x4db/0xfc0 [ 151.620944] ? usleep_range+0x170/0x170 [ 151.624908] ? trace_hardirqs_on+0x67/0x220 [ 151.629219] ? kasan_check_read+0x11/0x20 [ 151.633357] ? __next_timer_interrupt+0x1a0/0x1a0 [ 151.638198] ? prepare_to_swait_exclusive+0x120/0x120 [ 151.643383] rcu_gp_kthread+0xd5c/0x2190 [ 151.647469] ? rcu_blocking_is_gp+0x90/0x90 [ 151.651786] ? trace_hardirqs_on+0x67/0x220 [ 151.656094] ? kasan_check_read+0x11/0x20 [ 151.660233] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 151.665324] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 151.670857] ? __kthread_parkme+0xfb/0x1b0 [ 151.675081] kthread+0x354/0x420 [ 151.678437] ? rcu_blocking_is_gp+0x90/0x90 [ 151.682761] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 151.689598] ret_from_fork+0x24/0x30 [ 151.693344] NMI backtrace for cpu 1 [ 151.696959] CPU: 1 PID: 2741 Comm: kworker/1:2 Not tainted 4.19.71 #0 [ 151.703521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 151.712887] Workqueue: ipv6_addrconf addrconf_dad_work [ 151.718148] Call Trace: [ 151.720715] [ 151.722865] dump_stack+0x172/0x1f0 [ 151.726481] nmi_cpu_backtrace.cold+0x63/0xa4 [ 151.730965] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 151.735890] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 151.741155] arch_trigger_cpumask_backtrace+0x14/0x20 [ 151.746336] rcu_dump_cpu_stacks+0x189/0x1d5 [ 151.750736] ? wake_up_process+0x10/0x20 [ 151.754791] rcu_check_callbacks.cold+0x5e3/0xd90 [ 151.759623] ? trace_hardirqs_off+0x62/0x220 [ 151.764028] update_process_times+0x32/0x80 [ 151.768339] tick_sched_handle+0xa2/0x190 [ 151.772477] tick_sched_timer+0x47/0x130 [ 151.776528] __hrtimer_run_queues+0x33b/0xdc0 [ 151.781016] ? tick_sched_do_timer+0x1b0/0x1b0 [ 151.785587] ? hrtimer_fixup_activate+0x30/0x30 [ 151.790255] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 151.795260] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 151.800625] hrtimer_interrupt+0x314/0x770 [ 151.804867] smp_apic_timer_interrupt+0x111/0x550 [ 151.809700] apic_timer_interrupt+0xf/0x20 [ 151.813930] RIP: 0010:write_comp_data+0x0/0x70 [ 151.818503] Code: 83 fa 02 75 20 48 8b 88 d8 12 00 00 8b 80 d4 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 5d c3 0f 1f 00 <65> 4c 8b 04 25 40 ee 01 00 65 8b 05 e0 86 96 7e a9 00 01 1f 00 75 [ 151.837392] RSP: 0018:ffff8880ae906b20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 151.845091] RAX: 0000000000000001 RBX: ffff88809750abf8 RCX: ffffffff858e8986 [ 151.852355] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000001 [ 151.859628] RBP: ffff8880ae906b28 R08: ffff88809f56e400 R09: 000000000000000a [ 151.866884] R10: ffff88809f56ee10 R11: 000000000615a80e R12: dffffc0000000000 [ 151.874140] R13: ffff88809750a940 R14: 0000000000000001 R15: 0000000000000000 [ 151.881418] ? apic_timer_interrupt+0xa/0x20 [ 151.885829] ? hhf_dequeue+0x5b6/0xa00 [ 151.889711] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 151.895240] hhf_dequeue+0x5b6/0xa00 [ 151.898947] __qdisc_run+0x1e7/0x1960 [ 151.902766] __dev_queue_xmit+0x165c/0x2fe0 [ 151.907101] ? deliver_clone+0x61/0xc0 [ 151.910991] ? br_flood+0x5fa/0x710 [ 151.914616] ? br_handle_frame_finish+0xf72/0x1510 [ 151.919552] ? netdev_pick_tx+0x300/0x300 [ 151.923703] ? do_softirq_own_stack+0x2a/0x40 [ 151.928187] ? do_softirq.part.0+0x11a/0x170 [ 151.932583] ? __local_bh_enable_ip+0x211/0x270 [ 151.937239] ? ip6_finish_output2+0xbc0/0x2550 [ 151.941819] ? ip6_finish_output+0x574/0xbe0 [ 151.946213] ? ndisc_send_skb+0xf3b/0x1460 [ 151.950433] ? ndisc_send_ns+0x3a9/0x850 [ 151.954481] ? addrconf_dad_work+0xb88/0x1150 [ 151.958988] ? worker_thread+0x98/0xe40 [ 151.962971] ? kthread+0x354/0x420 [ 151.966515] ? ret_from_fork+0x24/0x30 [ 151.970405] ? __lock_is_held+0xb6/0x140 [ 151.974473] dev_queue_xmit+0x18/0x20 [ 151.978285] ? dev_queue_xmit+0x18/0x20 [ 151.982282] br_dev_queue_push_xmit+0x405/0x5d0 [ 151.986956] ? br_nf_dev_queue_xmit+0x38c/0x1610 [ 151.991715] br_nf_dev_queue_xmit+0x365/0x1610 [ 151.996310] br_nf_post_routing+0x76f/0x12f0 [ 152.000759] ? find_inlist_lock.constprop.0+0x22a/0x230 [ 152.006119] ? br_nf_dev_queue_xmit+0x1610/0x1610 [ 152.010953] ? ipv6_skip_exthdr+0x5b0/0x5c0 [ 152.015269] ? br_nf_pre_routing_finish_bridge+0xaa0/0xaa0 [ 152.020890] nf_hook_slow+0xbc/0x1e0 [ 152.024600] br_forward_finish+0x215/0x400 [ 152.029302] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 152.034151] ? br_fdb_add.cold+0x8a/0x8a [ 152.038203] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 152.043208] ? nf_hook_slow+0xf0/0x1e0 [ 152.047087] br_nf_hook_thresh+0x2e9/0x370 [ 152.051319] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 152.056330] ? setup_pre_routing+0x470/0x470 [ 152.060745] ? find_held_lock+0x35/0x130 [ 152.064803] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 152.069813] br_nf_forward_finish+0x356/0x700 [ 152.074298] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 152.079133] br_nf_forward_ip+0x6b4/0x17c0 [ 152.083361] ? br_nf_forward_finish+0x700/0x700 [ 152.088022] ? refcount_inc_not_zero_checked+0x147/0x200 [ 152.093473] ? br_nf_hook_thresh+0x370/0x370 [ 152.097875] nf_hook_slow+0xbc/0x1e0 [ 152.101580] __br_forward+0x393/0xb30 [ 152.105369] ? br_forward_finish+0x400/0x400 [ 152.109789] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 152.114663] deliver_clone+0x61/0xc0 [ 152.118399] br_flood+0x5fa/0x710 [ 152.121858] br_handle_frame_finish+0xf72/0x1510 [ 152.126621] ? br_handle_local_finish+0x20/0x20 [ 152.131285] ? __lock_is_held+0xb6/0x140 [ 152.135342] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 152.140366] ? nf_hook_slow+0xf0/0x1e0 [ 152.144245] br_nf_hook_thresh+0x2e9/0x370 [ 152.148466] ? br_handle_local_finish+0x20/0x20 [ 152.153123] ? setup_pre_routing+0x470/0x470 [ 152.157527] ? br_handle_local_finish+0x20/0x20 [ 152.162194] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 152.167384] br_nf_pre_routing_finish_ipv6+0x6ed/0xd70 [ 152.172645] ? br_handle_local_finish+0x20/0x20 [ 152.177316] ? kasan_check_read+0x11/0x20 [ 152.181456] br_nf_pre_routing_ipv6+0x4a5/0x8ca [ 152.186124] ? br_validate_ipv6+0xb90/0xb90 [ 152.190436] ? br_nf_pre_routing_finish.cold+0x11d/0x11d [ 152.195878] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 152.201403] ? skb_pull_rcsum+0x164/0x340 [ 152.205541] br_nf_pre_routing+0x1016/0x159c [ 152.209940] ? br_nf_pre_routing_finish+0x1960/0x1960 [ 152.215121] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 152.220645] ? ebt_broute+0x127/0x190 [ 152.224441] nf_hook_slow+0xbc/0x1e0 [ 152.228694] br_handle_frame+0x985/0x1480 [ 152.232843] ? br_handle_frame_finish+0x1510/0x1510 [ 152.237848] ? br_handle_local_finish+0x20/0x20 [ 152.242516] ? br_handle_frame_finish+0x1510/0x1510 [ 152.247524] __netif_receive_skb_core+0xac1/0x3570 [ 152.252441] ? __lock_acquire+0x6ee/0x49c0 [ 152.256665] ? trace_hardirqs_off+0x62/0x220 [ 152.261075] ? netif_receive_skb+0x2d0/0x2d0 [ 152.265472] ? mark_held_locks+0x100/0x100 [ 152.269703] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 152.274795] ? process_backlog+0x482/0x7a0 [ 152.279146] __netif_receive_skb_one_core+0xa8/0x1a0 [ 152.284235] ? __netif_receive_skb_one_core+0xa8/0x1a0 [ 152.289501] ? __netif_receive_skb_core+0x3570/0x3570 [ 152.294686] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 152.300213] ? check_preemption_disabled+0x48/0x290 [ 152.305212] ? lock_acquire+0x16f/0x3f0 [ 152.309181] __netif_receive_skb+0x2c/0x1d0 [ 152.313494] process_backlog+0x23a/0x7a0 [ 152.317551] ? net_rx_action+0x27b/0x1070 [ 152.321688] ? lockdep_hardirqs_on+0x19b/0x5d0 [ 152.326261] net_rx_action+0x4f5/0x1070 [ 152.330236] ? napi_complete_done+0x500/0x500 [ 152.334727] ? __lock_is_held+0xb6/0x140 [ 152.338798] __do_softirq+0x25c/0x921 [ 152.342588] ? rcu_nmi_exit+0xe4/0x140 [ 152.346476] ? ip6_finish_output2+0xb9f/0x2550 [ 152.351050] do_softirq_own_stack+0x2a/0x40 [ 152.355353] [ 152.357584] do_softirq.part.0+0x11a/0x170 [ 152.361807] __local_bh_enable_ip+0x211/0x270 [ 152.366290] ip6_finish_output2+0xbd2/0x2550 [ 152.370688] ? ip6_mtu+0x2e6/0x460 [ 152.374221] ? ip6_forward_finish+0x4d0/0x4d0 [ 152.378704] ? lock_downgrade+0x810/0x810 [ 152.382844] ? kasan_check_read+0x11/0x20 [ 152.386984] ip6_finish_output+0x574/0xbe0 [ 152.391208] ? ip6_finish_output+0x574/0xbe0 [ 152.395610] ip6_output+0x235/0x7c0 [ 152.399227] ? ip6_finish_output+0xbe0/0xbe0 [ 152.403626] ? ip6_fragment+0x3770/0x3770 [ 152.407768] ndisc_send_skb+0xf3b/0x1460 [ 152.411821] ? nf_hook.constprop.0+0x560/0x560 [ 152.416397] ? skb_set_owner_w+0x24c/0x360 [ 152.420623] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 152.425635] ndisc_send_ns+0x3a9/0x850 [ 152.429506] ? mark_held_locks+0xb1/0x100 [ 152.434182] ? ndisc_netdev_event+0x470/0x470 [ 152.443273] ? lockdep_hardirqs_on+0x415/0x5d0 [ 152.447843] ? addrconf_dad_work+0xac4/0x1150 [ 152.452325] ? trace_hardirqs_on+0x67/0x220 [ 152.456634] ? addrconf_dad_work+0xac4/0x1150 [ 152.461135] addrconf_dad_work+0xb88/0x1150 [ 152.465449] ? addrconf_dad_completed+0xbb0/0xbb0 [ 152.470288] process_one_work+0x989/0x1750 [ 152.474520] ? pwq_dec_nr_in_flight+0x320/0x320 [ 152.479179] ? lock_acquire+0x16f/0x3f0 [ 152.483145] ? kasan_check_write+0x14/0x20 [ 152.487373] ? do_raw_spin_lock+0xc8/0x240 [ 152.491596] worker_thread+0x98/0xe40 [ 152.495390] ? trace_hardirqs_on+0x67/0x220 [ 152.499710] kthread+0x354/0x420 [ 152.503062] ? process_one_work+0x1750/0x1750 [ 152.507545] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 152.513072] ret_from_fork+0x24/0x30