[ 70.164378][ T26] audit: type=1800 audit(1568321945.684:31): pid=10212 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 70.190964][ T26] audit: type=1800 audit(1568321945.684:32): pid=10212 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 periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts. syzkaller login: [ 169.218288][ T26] kauditd_printk_skb: 3 callbacks suppressed [ 169.218302][ T26] audit: type=1400 audit(1568322044.814:36): avc: denied { map } for pid=10405 comm="syz-executor752" path="/root/syz-executor752263282" 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 [ 169.263096][T10406] IPVS: ftp: loaded support on port[0] = 21 [ 169.311518][T10406] chnl_net:caif_netlink_parms(): no params data found [ 169.336071][T10406] bridge0: port 1(bridge_slave_0) entered blocking state [ 169.344162][T10406] bridge0: port 1(bridge_slave_0) entered disabled state [ 169.352702][T10406] device bridge_slave_0 entered promiscuous mode [ 169.360768][T10406] bridge0: port 2(bridge_slave_1) entered blocking state [ 169.369509][T10406] bridge0: port 2(bridge_slave_1) entered disabled state [ 169.378434][T10406] device bridge_slave_1 entered promiscuous mode [ 169.394074][T10406] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 169.406007][T10406] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 169.422679][T10406] team0: Port device team_slave_0 added [ 169.429848][T10406] team0: Port device team_slave_1 added [ 169.498721][T10406] device hsr_slave_0 entered promiscuous mode [ 169.557000][T10406] device hsr_slave_1 entered promiscuous mode [ 169.622257][T10406] bridge0: port 2(bridge_slave_1) entered blocking state [ 169.629742][T10406] bridge0: port 2(bridge_slave_1) entered forwarding state [ 169.637963][T10406] bridge0: port 1(bridge_slave_0) entered blocking state [ 169.645539][T10406] bridge0: port 1(bridge_slave_0) entered forwarding state [ 169.671047][T10406] 8021q: adding VLAN 0 to HW filter on device bond0 [ 169.682222][ T3517] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 169.700906][ T3517] bridge0: port 1(bridge_slave_0) entered disabled state [ 169.708767][ T3517] bridge0: port 2(bridge_slave_1) entered disabled state [ 169.716612][ T3517] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 169.726865][T10406] 8021q: adding VLAN 0 to HW filter on device team0 [ 169.738982][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 169.747487][ T3014] bridge0: port 1(bridge_slave_0) entered blocking state [ 169.754688][ T3014] bridge0: port 1(bridge_slave_0) entered forwarding state [ 169.762320][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 169.771397][ T3014] bridge0: port 2(bridge_slave_1) entered blocking state [ 169.778652][ T3014] bridge0: port 2(bridge_slave_1) entered forwarding state [ 169.795820][T10406] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 169.806790][T10406] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 169.819192][ T3517] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 169.827995][ T3517] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 169.836222][ T3517] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 169.844646][ T3517] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 169.853249][ T3517] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 169.861189][ T3517] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 169.874772][T10406] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 275.076545][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 275.083825][ C1] rcu: 1-...!: (1 GPs behind) idle=efa/1/0x4000000000000002 softirq=11109/11110 fqs=8 [ 275.093711][ C1] (t=10500 jiffies g=10437 q=43) [ 275.099271][ C1] rcu: rcu_preempt kthread starved for 10484 jiffies! g10437 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 275.111476][ C1] rcu: RCU grace-period kthread stack dump: [ 275.117886][ C1] rcu_preempt I29688 10 2 0x80004000 [ 275.124647][ C1] Call Trace: [ 275.128000][ C1] __schedule+0x755/0x1580 [ 275.132579][ C1] ? __sched_text_start+0x8/0x8 [ 275.137688][ C1] schedule+0xd9/0x260 [ 275.141850][ C1] schedule_timeout+0x486/0xc50 [ 275.147180][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 275.152788][ C1] ? usleep_range+0x170/0x170 [ 275.157454][ C1] ? trace_hardirqs_on+0x67/0x240 [ 275.162476][ C1] ? __kasan_check_read+0x11/0x20 [ 275.167664][ C1] ? __next_timer_interrupt+0x1a0/0x1a0 [ 275.173210][ C1] ? swake_up_one+0x60/0x60 [ 275.177881][ C1] rcu_gp_kthread+0x9b2/0x18c0 [ 275.182639][ C1] ? rcu_barrier+0x310/0x310 [ 275.187223][ C1] ? trace_hardirqs_on+0x67/0x240 [ 275.192239][ C1] ? __kasan_check_read+0x11/0x20 [ 275.197247][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 275.203481][ C1] ? __kthread_parkme+0x108/0x1c0 [ 275.208484][ C1] ? __kasan_check_read+0x11/0x20 [ 275.213503][ C1] kthread+0x361/0x430 [ 275.217554][ C1] ? rcu_barrier+0x310/0x310 [ 275.222139][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 275.228456][ C1] ret_from_fork+0x24/0x30 [ 275.232885][ C1] NMI backtrace for cpu 1 [ 275.237199][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.3.0-rc8+ #0 [ 275.244547][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 275.254754][ C1] Call Trace: [ 275.258032][ C1] [ 275.260952][ C1] dump_stack+0x172/0x1f0 [ 275.265265][ C1] nmi_cpu_backtrace.cold+0x70/0xb2 [ 275.270445][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 275.276669][ C1] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 275.282371][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 275.288336][ C1] arch_trigger_cpumask_backtrace+0x14/0x20 [ 275.294209][ C1] rcu_dump_cpu_stacks+0x183/0x1cf [ 275.299325][ C1] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 275.304869][ C1] ? raise_softirq+0x138/0x340 [ 275.309843][ C1] update_process_times+0x32/0x80 [ 275.314848][ C1] tick_sched_handle+0xa2/0x190 [ 275.319778][ C1] tick_sched_timer+0x53/0x140 [ 275.324537][ C1] __hrtimer_run_queues+0x364/0xe40 [ 275.329716][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 275.334982][ C1] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 275.340509][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 275.346208][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 275.352269][ C1] hrtimer_interrupt+0x314/0x770 [ 275.357234][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 275.362776][ C1] apic_timer_interrupt+0xf/0x20 [ 275.367687][ C1] [ 275.370637][ C1] RIP: 0010:hhf_dequeue+0xaf/0xa20 [ 275.375759][ C1] Code: 00 0f 85 6d 07 00 00 49 8b 1e 48 8d 7b 10 48 89 f8 48 c1 e8 03 42 0f b6 04 20 84 c0 74 08 3c 03 0f 8e 69 07 00 00 44 8b 7b 10 <31> ff 44 89 fe e8 37 1b ac fb 45 85 ff 0f 8e 70 04 00 00 e8 a9 19 [ 275.395355][ C1] RSP: 0018:ffff8880a99169a8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 275.403762][ C1] RAX: 0000000000000000 RBX: ffff8880a226b0b8 RCX: ffffffff85c660f9 [ 275.411723][ C1] RDX: 0000000000000100 RSI: ffffffff85c65afa RDI: ffff8880a226b0c8 [ 275.419674][ C1] RBP: ffff8880a99169f8 R08: ffff8880a990a440 R09: 0000000000000000 [ 275.427642][ C1] R10: fffffbfff134afaf R11: ffff8880a990a440 R12: dffffc0000000000 [ 275.435608][ C1] R13: ffff8880a226adc0 R14: ffff8880a226b150 R15: 0000000000000000 [ 275.443572][ C1] ? hhf_dequeue+0x679/0xa20 [ 275.448142][ C1] ? hhf_dequeue+0x7a/0xa20 [ 275.452628][ C1] ? hhf_dequeue+0x7a/0xa20 [ 275.457187][ C1] __qdisc_run+0x1e7/0x19d0 [ 275.461699][ C1] ? dev_queue_xmit+0x18/0x20 [ 275.466381][ C1] __dev_queue_xmit+0x16f1/0x3650 [ 275.472028][ C1] ? process_backlog+0x206/0x750 [ 275.476945][ C1] ? net_rx_action+0x4d6/0x1030 [ 275.481778][ C1] ? __do_softirq+0x262/0x98c [ 275.486447][ C1] ? run_ksoftirqd+0x8e/0x110 [ 275.491119][ C1] ? smpboot_thread_fn+0x6a3/0xa40 [ 275.496225][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 275.502894][ C1] ? quarantine_put+0x11c/0x1c0 [ 275.507726][ C1] ? trace_hardirqs_on+0x67/0x240 [ 275.512779][ C1] ? __skb_ext_put+0xd9/0x210 [ 275.517439][ C1] dev_queue_xmit+0x18/0x20 [ 275.521919][ C1] ? dev_queue_xmit+0x18/0x20 [ 275.526603][ C1] br_dev_queue_push_xmit+0x3f3/0x5c0 [ 275.531994][ C1] ? __skb_ext_del+0xb0/0x2c0 [ 275.536653][ C1] ? lock_downgrade+0x920/0x920 [ 275.542990][ C1] br_nf_dev_queue_xmit+0x34e/0x1470 [ 275.548416][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 275.554659][ C1] br_nf_post_routing+0x1502/0x1d30 [ 275.559955][ C1] ? br_nf_dev_queue_xmit+0x1470/0x1470 [ 275.565588][ C1] ? mark_held_locks+0xf0/0xf0 [ 275.570351][ C1] ? nf_bridge_update_protocol+0x1d0/0x1d0 [ 275.576251][ C1] ? __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 275.582109][ C1] nf_hook_slow+0xbc/0x1e0 [ 275.586613][ C1] br_forward_finish+0x215/0x400 [ 275.591537][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 275.597067][ C1] ? br_fdb_add.cold+0x8c/0x8c [ 275.601966][ C1] ? ip_vs_out+0x244/0x1700 [ 275.606453][ C1] ? selinux_ip_forward+0x1a5/0x4e0 [ 275.611719][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 275.617543][ C1] ? nf_hook_slow+0xf0/0x1e0 [ 275.622217][ C1] br_nf_hook_thresh+0x2e9/0x370 [ 275.627152][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 275.632919][ C1] ? setup_pre_routing+0x4b0/0x4b0 [ 275.638553][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 275.644185][ C1] ? br_nf_forward_finish+0x176/0xa90 [ 275.649625][ C1] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 275.655499][ C1] br_nf_forward_finish+0x66c/0xa90 [ 275.660679][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 275.666227][ C1] br_nf_forward_ip+0xc74/0x21e0 [ 275.671268][ C1] ? br_nf_forward_arp+0x1670/0x1670 [ 275.676550][ C1] ? mark_held_locks+0xf0/0xf0 [ 275.681306][ C1] ? br_nf_hook_thresh+0x370/0x370 [ 275.686441][ C1] ? __vlan_flush+0x120/0x120 [ 275.691111][ C1] nf_hook_slow+0xbc/0x1e0 [ 275.695648][ C1] __br_forward+0x393/0xb00 [ 275.700134][ C1] ? br_forward_finish+0x400/0x400 [ 275.705398][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 275.711066][ C1] deliver_clone+0x61/0xc0 [ 275.715575][ C1] br_flood+0x325/0x3d0 [ 275.719852][ C1] br_handle_frame_finish+0xb46/0x1670 [ 275.725487][ C1] ? br_handle_local_finish+0x20/0x20 [ 275.730932][ C1] ? audit_alloc_mark+0x430/0x500 [ 275.735945][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 275.741651][ C1] ? nf_hook_slow+0xf0/0x1e0 [ 275.746240][ C1] br_nf_hook_thresh+0x2e9/0x370 [ 275.751199][ C1] ? br_handle_local_finish+0x20/0x20 [ 275.756559][ C1] ? setup_pre_routing+0x4b0/0x4b0 [ 275.761655][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 275.767891][ C1] ? br_handle_local_finish+0x20/0x20 [ 275.773258][ C1] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 275.779221][ C1] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 275.785095][ C1] br_nf_pre_routing_finish_ipv6+0x6fb/0xd80 [ 275.791155][ C1] ? br_handle_local_finish+0x20/0x20 [ 275.797035][ C1] br_nf_pre_routing_ipv6+0x456/0x832 [ 275.802594][ C1] ? br_validate_ipv6+0xb80/0xb80 [ 275.808033][ C1] ? br_nf_pre_routing_finish.cold+0x124/0x124 [ 275.814178][ C1] ? br_nf_pre_routing+0x246/0x2355 [ 275.819465][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 275.825698][ C1] ? skb_pull_rcsum+0x155/0x300 [ 275.830616][ C1] br_nf_pre_routing+0x1743/0x2355 [ 275.835829][ C1] ? br_nf_pre_routing_finish+0x1730/0x1730 [ 275.841715][ C1] ? br_nf_pre_routing_finish+0x1730/0x1730 [ 275.847674][ C1] br_handle_frame+0x806/0x133e [ 275.852510][ C1] ? br_handle_frame_finish+0x1670/0x1670 [ 275.860833][ C1] ? stack_trace_save+0xac/0xe0 [ 275.867138][ C1] ? br_handle_local_finish+0x20/0x20 [ 275.874390][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 275.880614][ C1] ? br_handle_frame_finish+0x1670/0x1670 [ 275.886315][ C1] __netif_receive_skb_core+0xfc1/0x3060 [ 275.891964][ C1] ? __kasan_slab_free+0x102/0x150 [ 275.897165][ C1] ? kasan_slab_free+0xe/0x10 [ 275.901816][ C1] ? kmem_cache_free+0x86/0x320 [ 275.907679][ C1] ? dst_destroy+0x29e/0x3c0 [ 275.912256][ C1] ? dst_destroy_rcu+0x16/0x19 [ 275.916999][ C1] ? run_ksoftirqd+0x8e/0x110 [ 275.921656][ C1] ? smpboot_thread_fn+0x680/0xa40 [ 275.926743][ C1] ? do_xdp_generic+0x50/0x50 [ 275.931397][ C1] ? debug_check_no_obj_freed+0x20a/0x43f [ 275.937103][ C1] ? __kasan_check_read+0x11/0x20 [ 275.942103][ C1] ? debug_check_no_obj_freed+0x20a/0x43f [ 275.947796][ C1] ? __kasan_check_read+0x11/0x20 [ 275.952817][ C1] ? __kasan_check_write+0x14/0x20 [ 275.957915][ C1] ? lock_downgrade+0x920/0x920 [ 275.962746][ C1] ? update_load_avg+0xb08/0x1b10 [ 275.967748][ C1] __netif_receive_skb_one_core+0xa8/0x1a0 [ 275.973531][ C1] ? __netif_receive_skb_one_core+0xa8/0x1a0 [ 275.979494][ C1] ? __kasan_check_write+0x14/0x20 [ 275.984582][ C1] ? __netif_receive_skb_core+0x3060/0x3060 [ 275.990461][ C1] ? lock_acquire+0x190/0x410 [ 275.995117][ C1] ? process_backlog+0x195/0x750 [ 276.000036][ C1] __netif_receive_skb+0x2c/0x1d0 [ 276.005038][ C1] process_backlog+0x206/0x750 [ 276.009784][ C1] net_rx_action+0x4d6/0x1030 [ 276.014441][ C1] ? napi_complete_done+0x4b0/0x4b0 [ 276.019615][ C1] ? sched_clock+0x2e/0x50 [ 276.024012][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 276.031105][ C1] __do_softirq+0x262/0x98c [ 276.035590][ C1] ? takeover_tasklets+0x820/0x820 [ 276.040680][ C1] run_ksoftirqd+0x8e/0x110 [ 276.045159][ C1] smpboot_thread_fn+0x6a3/0xa40 [ 276.050076][ C1] ? smpboot_register_percpu_thread+0x390/0x390 [ 276.056295][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 276.062519][ C1] ? __kthread_parkme+0x108/0x1c0 [ 276.067575][ C1] ? __kasan_check_read+0x11/0x20 [ 276.072577][ C1] kthread+0x361/0x430 [ 276.076626][ C1] ? smpboot_register_percpu_thread+0x390/0x390 [ 276.082848][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 276.089086][ C1] ret_from_fork+0x24/0x30