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. [ 38.710801] audit: type=1800 audit(1568020066.433:33): pid=7273 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 [ 38.734159] audit: type=1800 audit(1568020066.433:34): pid=7273 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 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 40.662530] audit: type=1400 audit(1568020068.383:35): avc: denied { map } for pid=7447 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 Warning: Permanently added '10.128.0.55' (ECDSA) to the list of known hosts. [ 47.179465] audit: type=1400 audit(1568020074.893:36): avc: denied { map } for pid=7460 comm="syz-executor277" path="/root/syz-executor277966142" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 47.201135] IPVS: ftp: loaded support on port[0] = 21 [ 47.256713] chnl_net:caif_netlink_parms(): no params data found [ 47.286177] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.292788] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.300206] device bridge_slave_0 entered promiscuous mode [ 47.307130] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.313564] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.320486] device bridge_slave_1 entered promiscuous mode [ 47.335214] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 47.344667] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 47.359714] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 47.367102] team0: Port device team_slave_0 added [ 47.372690] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 47.379885] team0: Port device team_slave_1 added [ 47.385013] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 47.392381] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 47.451656] device hsr_slave_0 entered promiscuous mode [ 47.519456] device hsr_slave_1 entered promiscuous mode [ 47.579705] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 47.586613] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 47.600359] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.606746] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.613670] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.620060] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.648554] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 47.655793] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.663871] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.672572] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.691537] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.698514] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.705882] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 47.715255] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 47.721660] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.731526] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 47.739153] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.745578] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.759791] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 47.767305] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.776983] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.784940] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 47.793278] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 47.802346] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 47.817032] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 47.826903] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 47.838301] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready executing program [ 47.844828] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 47.852422] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 47.863939] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 47.871012] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 47.880865] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 152.939182] rcu: INFO: rcu_preempt self-detected stall on CPU [ 152.945293] rcu: 0-...!: (10500 ticks this GP) idle=c7e/1/0x4000000000000002 softirq=10781/10781 fqs=0 [ 152.955088] rcu: (t=10500 jiffies g=4729 q=18) [ 152.959842] rcu: rcu_preempt kthread starved for 10500 jiffies! g4729 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 152.970394] rcu: RCU grace-period kthread stack dump: [ 152.975565] rcu_preempt I29104 10 2 0x80000000 [ 152.981187] Call Trace: [ 152.983772] __schedule+0x866/0x1dc0 [ 152.987481] ? pci_mmcfg_check_reserved+0x170/0x170 [ 152.992487] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 152.997580] ? lockdep_hardirqs_on+0x415/0x5d0 [ 153.002152] ? trace_hardirqs_on+0x67/0x220 [ 153.006479] schedule+0x92/0x1c0 [ 153.009848] schedule_timeout+0x4db/0xfc0 [ 153.013985] ? usleep_range+0x170/0x170 [ 153.017948] ? trace_hardirqs_on+0x67/0x220 [ 153.022276] ? kasan_check_read+0x11/0x20 [ 153.026414] ? __next_timer_interrupt+0x1a0/0x1a0 [ 153.031249] ? prepare_to_swait_exclusive+0x120/0x120 [ 153.036430] rcu_gp_kthread+0xd5c/0x2190 [ 153.040512] ? rcu_blocking_is_gp+0x90/0x90 [ 153.044822] ? trace_hardirqs_on+0x67/0x220 [ 153.049144] ? kasan_check_read+0x11/0x20 [ 153.053285] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 153.058377] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 153.063919] ? __kthread_parkme+0xfb/0x1b0 [ 153.068148] kthread+0x354/0x420 [ 153.071504] ? rcu_blocking_is_gp+0x90/0x90 [ 153.075814] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 153.081340] ret_from_fork+0x24/0x30 [ 153.085075] NMI backtrace for cpu 0 [ 153.088695] CPU: 0 PID: 7465 Comm: kworker/0:3 Not tainted 4.19.71 #0 [ 153.095255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 153.104626] Workqueue: ipv6_addrconf addrconf_dad_work [ 153.109887] Call Trace: [ 153.112457] [ 153.114598] dump_stack+0x172/0x1f0 [ 153.118218] nmi_cpu_backtrace.cold+0x63/0xa4 [ 153.122702] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 153.127618] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 153.132887] arch_trigger_cpumask_backtrace+0x14/0x20 [ 153.138063] rcu_dump_cpu_stacks+0x189/0x1d5 [ 153.142457] ? wake_up_process+0x10/0x20 [ 153.146512] rcu_check_callbacks.cold+0x5e3/0xd90 [ 153.151343] ? trace_hardirqs_off+0x62/0x220 [ 153.155748] update_process_times+0x32/0x80 [ 153.160073] tick_sched_handle+0xa2/0x190 [ 153.164209] tick_sched_timer+0x47/0x130 [ 153.168263] __hrtimer_run_queues+0x33b/0xdc0 [ 153.172761] ? tick_sched_do_timer+0x1b0/0x1b0 [ 153.177334] ? hrtimer_fixup_activate+0x30/0x30 [ 153.181989] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 153.186992] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 153.192357] hrtimer_interrupt+0x314/0x770 [ 153.196606] smp_apic_timer_interrupt+0x111/0x550 [ 153.201454] apic_timer_interrupt+0xf/0x20 [ 153.205676] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 [ 153.211030] Code: 41 bc f4 ff ff ff e8 33 66 ea ff 48 c7 05 44 12 cd 08 00 00 00 00 e9 ca e9 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <55> 48 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 28 87 [ 153.229919] RSP: 0018:ffff8880ae806b30 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 153.237621] RAX: 0000000000000302 RBX: ffff88807936a2f8 RCX: ffffffff858e8a2e [ 153.244896] RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000001 [ 153.252153] RBP: ffff8880ae806b88 R08: ffff888098662600 R09: 000000000000000a [ 153.259412] R10: ffff888098663010 R11: 000000008a9285b5 R12: dffffc0000000000 [ 153.266685] R13: ffff88807936a040 R14: ffff88807936a398 R15: ffff88807936a390 [ 153.273954] ? apic_timer_interrupt+0xa/0x20 [ 153.278378] ? hhf_dequeue+0x65e/0xa00 [ 153.282257] ? hhf_dequeue+0x670/0xa00 [ 153.286140] __qdisc_run+0x1e7/0x1960 [ 153.289943] __dev_queue_xmit+0x165c/0x2fe0 [ 153.294253] ? deliver_clone+0x61/0xc0 [ 153.298129] ? br_flood+0x5fa/0x710 [ 153.301745] ? br_handle_frame_finish+0xf72/0x1510 [ 153.306693] ? netdev_pick_tx+0x300/0x300 [ 153.310842] ? do_softirq_own_stack+0x2a/0x40 [ 153.315329] ? do_softirq.part.0+0x11a/0x170 [ 153.319728] ? __local_bh_enable_ip+0x211/0x270 [ 153.324386] ? ip6_finish_output2+0xbc0/0x2550 [ 153.328954] ? ip6_finish_output+0x574/0xbe0 [ 153.333353] ? ndisc_send_skb+0xf3b/0x1460 [ 153.337575] ? ndisc_send_ns+0x3a9/0x850 [ 153.341621] ? addrconf_dad_work+0xb88/0x1150 [ 153.346104] ? worker_thread+0x98/0xe40 [ 153.350064] ? kthread+0x354/0x420 [ 153.353603] ? ret_from_fork+0x24/0x30 [ 153.357484] ? __lock_is_held+0xb6/0x140 [ 153.361539] dev_queue_xmit+0x18/0x20 [ 153.365329] ? dev_queue_xmit+0x18/0x20 [ 153.369294] br_dev_queue_push_xmit+0x405/0x5d0 [ 153.373950] ? br_nf_dev_queue_xmit+0x38c/0x1610 [ 153.378698] br_nf_dev_queue_xmit+0x365/0x1610 [ 153.383273] br_nf_post_routing+0x76f/0x12f0 [ 153.387673] ? find_inlist_lock.constprop.0+0x22a/0x230 [ 153.393028] ? br_nf_dev_queue_xmit+0x1610/0x1610 [ 153.397860] ? ipv6_skip_exthdr+0x5b0/0x5c0 [ 153.402174] ? br_nf_pre_routing_finish_bridge+0xaa0/0xaa0 [ 153.407789] nf_hook_slow+0xbc/0x1e0 [ 153.411501] br_forward_finish+0x215/0x400 [ 153.415728] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 153.420559] ? br_fdb_add.cold+0x8a/0x8a [ 153.424611] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 153.429615] ? nf_hook_slow+0xf0/0x1e0 [ 153.433492] br_nf_hook_thresh+0x2e9/0x370 [ 153.437744] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 153.442584] ? setup_pre_routing+0x470/0x470 [ 153.446992] ? find_held_lock+0x35/0x130 [ 153.451064] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 153.455938] br_nf_forward_finish+0x356/0x700 [ 153.460441] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 153.465303] br_nf_forward_ip+0x6b4/0x17c0 [ 153.469537] ? br_nf_forward_finish+0x700/0x700 [ 153.474199] ? refcount_inc_not_zero_checked+0x147/0x200 [ 153.479641] ? br_nf_hook_thresh+0x370/0x370 [ 153.484045] nf_hook_slow+0xbc/0x1e0 [ 153.487753] __br_forward+0x393/0xb30 [ 153.491546] ? br_forward_finish+0x400/0x400 [ 153.495949] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 153.500788] deliver_clone+0x61/0xc0 [ 153.504491] br_flood+0x5fa/0x710 [ 153.507940] br_handle_frame_finish+0xf72/0x1510 [ 153.512685] ? br_handle_local_finish+0x20/0x20 [ 153.517356] ? __lock_is_held+0xb6/0x140 [ 153.521413] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 153.526419] ? nf_hook_slow+0xf0/0x1e0 [ 153.530300] br_nf_hook_thresh+0x2e9/0x370 [ 153.534523] ? br_handle_local_finish+0x20/0x20 [ 153.539200] ? setup_pre_routing+0x470/0x470 [ 153.543599] ? br_handle_local_finish+0x20/0x20 [ 153.548258] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 153.553439] br_nf_pre_routing_finish_ipv6+0x6ed/0xd70 [ 153.558701] ? br_handle_local_finish+0x20/0x20 [ 153.563380] ? kasan_check_read+0x11/0x20 [ 153.567533] br_nf_pre_routing_ipv6+0x4a5/0x8ca [ 153.572202] ? br_validate_ipv6+0xb90/0xb90 [ 153.576522] ? br_nf_pre_routing_finish.cold+0x11d/0x11d [ 153.581967] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 153.587493] ? skb_pull_rcsum+0x164/0x340 [ 153.591634] br_nf_pre_routing+0x1016/0x159c [ 153.596107] ? br_nf_pre_routing_finish+0x1960/0x1960 [ 153.601305] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 153.606843] ? ebt_broute+0x127/0x190 [ 153.610650] nf_hook_slow+0xbc/0x1e0 [ 153.614364] br_handle_frame+0x985/0x1480 [ 153.618526] ? br_handle_frame_finish+0x1510/0x1510 [ 153.623539] ? br_handle_local_finish+0x20/0x20 [ 153.628205] ? br_handle_frame_finish+0x1510/0x1510 [ 153.633224] __netif_receive_skb_core+0xac1/0x3570 [ 153.638146] ? __lock_acquire+0x6ee/0x49c0 [ 153.642369] ? find_next_and_bit+0x19a/0x200 [ 153.646796] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 153.652326] ? netif_receive_skb+0x2d0/0x2d0 [ 153.656726] ? mark_held_locks+0x100/0x100 [ 153.660954] ? process_backlog+0x482/0x7a0 [ 153.665181] __netif_receive_skb_one_core+0xa8/0x1a0 [ 153.670277] ? __netif_receive_skb_one_core+0xa8/0x1a0 [ 153.675564] ? __netif_receive_skb_core+0x3570/0x3570 [ 153.680778] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 153.686318] ? check_preemption_disabled+0x48/0x290 [ 153.691328] ? lock_acquire+0x16f/0x3f0 [ 153.695315] __netif_receive_skb+0x2c/0x1d0 [ 153.699633] process_backlog+0x23a/0x7a0 [ 153.703685] ? net_rx_action+0x27b/0x1070 [ 153.707823] ? lockdep_hardirqs_on+0x19b/0x5d0 [ 153.712400] net_rx_action+0x4f5/0x1070 [ 153.716388] ? napi_complete_done+0x500/0x500 [ 153.720874] ? __lock_is_held+0xb6/0x140 [ 153.724962] __do_softirq+0x25c/0x921 [ 153.728749] ? rcu_nmi_exit+0xe4/0x140 [ 153.732631] ? ip6_finish_output2+0xb9f/0x2550 [ 153.737201] do_softirq_own_stack+0x2a/0x40 [ 153.741506] [ 153.743738] do_softirq.part.0+0x11a/0x170 [ 153.747964] __local_bh_enable_ip+0x211/0x270 [ 153.752452] ip6_finish_output2+0xbd2/0x2550 [ 153.756851] ? ip6_mtu+0x2e6/0x460 [ 153.760385] ? ip6_forward_finish+0x4d0/0x4d0 [ 153.764882] ? lock_downgrade+0x810/0x810 [ 153.769023] ? kasan_check_read+0x11/0x20 [ 153.773167] ip6_finish_output+0x574/0xbe0 [ 153.777412] ? ip6_finish_output+0x574/0xbe0 [ 153.781811] ip6_output+0x235/0x7c0 [ 153.785429] ? ip6_finish_output+0xbe0/0xbe0 [ 153.789830] ? ip6_fragment+0x3770/0x3770 [ 153.793985] ndisc_send_skb+0xf3b/0x1460 [ 153.798051] ? nf_hook.constprop.0+0x560/0x560 [ 153.802627] ? skb_set_owner_w+0x24c/0x360 [ 153.806854] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 153.811859] ndisc_send_ns+0x3a9/0x850 [ 153.815744] ? mark_held_locks+0xb1/0x100 [ 153.819883] ? ndisc_netdev_event+0x470/0x470 [ 153.824365] ? lockdep_hardirqs_on+0x415/0x5d0 [ 153.828933] ? addrconf_dad_work+0xac4/0x1150 [ 153.833417] ? trace_hardirqs_on+0x67/0x220 [ 153.838001] ? addrconf_dad_work+0xac4/0x1150 [ 153.842489] addrconf_dad_work+0xb88/0x1150 [ 153.846803] ? addrconf_dad_completed+0xbb0/0xbb0 [ 153.851639] process_one_work+0x989/0x1750 [ 153.855868] ? pwq_dec_nr_in_flight+0x320/0x320 [ 153.860521] ? lock_acquire+0x16f/0x3f0 [ 153.864484] ? kasan_check_write+0x14/0x20 [ 153.868707] ? do_raw_spin_lock+0xc8/0x240 [ 153.872933] worker_thread+0x98/0xe40 [ 153.876722] ? trace_hardirqs_on+0x67/0x220 [ 153.881041] kthread+0x354/0x420 [ 153.884391] ? process_one_work+0x1750/0x1750 [ 153.888889] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 153.894430] ret_from_fork+0x24/0x30