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. [ 36.250666] audit: type=1800 audit(1567861496.968:33): pid=7270 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 [ 36.277427] audit: type=1800 audit(1567861496.968:34): pid=7270 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: [ 40.837416] audit: type=1400 audit(1567861501.548:35): 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 '10.128.0.187' (ECDSA) to the list of known hosts. [ 234.443540] audit: type=1400 audit(1567861695.158:36): avc: denied { map } for pid=7459 comm="syz-executor724" path="/root/syz-executor724359681" 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 [ 234.461707] IPVS: ftp: loaded support on port[0] = 21 [ 234.527600] chnl_net:caif_netlink_parms(): no params data found [ 234.560082] bridge0: port 1(bridge_slave_0) entered blocking state [ 234.566717] bridge0: port 1(bridge_slave_0) entered disabled state [ 234.573902] device bridge_slave_0 entered promiscuous mode [ 234.581317] bridge0: port 2(bridge_slave_1) entered blocking state [ 234.589002] bridge0: port 2(bridge_slave_1) entered disabled state [ 234.595949] device bridge_slave_1 entered promiscuous mode [ 234.612729] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 234.622036] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 234.637798] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 234.645737] team0: Port device team_slave_0 added [ 234.651545] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 234.658992] team0: Port device team_slave_1 added [ 234.664225] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 234.671691] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 234.731271] device hsr_slave_0 entered promiscuous mode [ 234.798990] device hsr_slave_1 entered promiscuous mode [ 234.839280] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 234.846471] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 234.861479] bridge0: port 2(bridge_slave_1) entered blocking state [ 234.868087] bridge0: port 2(bridge_slave_1) entered forwarding state [ 234.875274] bridge0: port 1(bridge_slave_0) entered blocking state [ 234.881832] bridge0: port 1(bridge_slave_0) entered forwarding state [ 234.912831] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 234.920348] 8021q: adding VLAN 0 to HW filter on device bond0 [ 234.929587] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 234.938123] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 234.957682] bridge0: port 1(bridge_slave_0) entered disabled state [ 234.965547] bridge0: port 2(bridge_slave_1) entered disabled state [ 234.974192] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 234.986708] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 234.993884] 8021q: adding VLAN 0 to HW filter on device team0 [ 235.003763] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 235.012723] bridge0: port 1(bridge_slave_0) entered blocking state [ 235.019144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 235.029173] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 235.037144] bridge0: port 2(bridge_slave_1) entered blocking state [ 235.043575] bridge0: port 2(bridge_slave_1) entered forwarding state [ 235.057846] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 235.066202] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 235.076208] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 235.086560] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 235.097331] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 235.106497] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 235.112878] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 235.125456] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 235.135806] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 340.228444] rcu: INFO: rcu_preempt self-detected stall on CPU [ 340.234530] rcu: 1-...!: (1 GPs behind) idle=bba/1/0x4000000000000002 softirq=10203/10204 fqs=45 [ 340.243787] rcu: (t=10500 jiffies g=4953 q=186) [ 340.248626] rcu: rcu_preempt kthread starved for 10408 jiffies! g4953 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 340.259176] rcu: RCU grace-period kthread stack dump: [ 340.264354] rcu_preempt I29104 10 2 0x80000000 [ 340.269973] Call Trace: [ 340.272626] __schedule+0x866/0x1dc0 [ 340.276341] ? pci_mmcfg_check_reserved+0x170/0x170 [ 340.281345] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 340.286469] ? lockdep_hardirqs_on+0x415/0x5d0 [ 340.291071] ? trace_hardirqs_on+0x67/0x220 [ 340.295380] schedule+0x92/0x1c0 [ 340.298733] schedule_timeout+0x4db/0xfc0 [ 340.302870] ? usleep_range+0x170/0x170 [ 340.306833] ? trace_hardirqs_on+0x67/0x220 [ 340.311167] ? kasan_check_read+0x11/0x20 [ 340.315349] ? __next_timer_interrupt+0x1a0/0x1a0 [ 340.320201] ? prepare_to_swait_exclusive+0x120/0x120 [ 340.325406] rcu_gp_kthread+0xd5c/0x2190 [ 340.329475] ? rcu_blocking_is_gp+0x90/0x90 [ 340.333785] ? trace_hardirqs_on+0x67/0x220 [ 340.338090] ? kasan_check_read+0x11/0x20 [ 340.342234] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 340.347360] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 340.352914] ? __kthread_parkme+0xfb/0x1b0 [ 340.357137] kthread+0x354/0x420 [ 340.360489] ? rcu_blocking_is_gp+0x90/0x90 [ 340.364797] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 340.370325] ret_from_fork+0x24/0x30 [ 340.374061] NMI backtrace for cpu 1 [ 340.377678] CPU: 1 PID: 7463 Comm: kworker/1:3 Not tainted 4.19.71 #0 [ 340.384236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 340.393652] Workqueue: ipv6_addrconf addrconf_dad_work [ 340.398923] Call Trace: [ 340.401487] [ 340.403635] dump_stack+0x172/0x1f0 [ 340.407261] nmi_cpu_backtrace.cold+0x63/0xa4 [ 340.411763] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 340.416679] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 340.421945] arch_trigger_cpumask_backtrace+0x14/0x20 [ 340.427122] rcu_dump_cpu_stacks+0x189/0x1d5 [ 340.431535] ? wake_up_process+0x10/0x20 [ 340.435599] rcu_check_callbacks.cold+0x5e3/0xd90 [ 340.440427] ? trace_hardirqs_off+0x62/0x220 [ 340.444862] update_process_times+0x32/0x80 [ 340.449306] tick_sched_handle+0xa2/0x190 [ 340.453453] tick_sched_timer+0x47/0x130 [ 340.457505] __hrtimer_run_queues+0x33b/0xdc0 [ 340.461991] ? tick_sched_do_timer+0x1b0/0x1b0 [ 340.466565] ? hrtimer_fixup_activate+0x30/0x30 [ 340.471229] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 340.476243] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 340.481598] hrtimer_interrupt+0x314/0x770 [ 340.485828] smp_apic_timer_interrupt+0x111/0x550 [ 340.490659] apic_timer_interrupt+0xf/0x20 [ 340.494884] [ 340.497147] RIP: 0010:hhf_dequeue+0x690/0xa00 [ 340.501641] Code: 84 e1 f9 ff ff e8 50 dc dc fb 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 0f 85 fb 02 00 00 48 89 d8 49 89 9d 58 03 00 00 48 c1 e8 03 <42> 80 3c 20 00 0f 85 a4 02 00 00 48 8b 45 c8 48 8d 7b 08 48 89 03 [ 340.520527] RSP: 0000:ffff88809a40edf8 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 [ 340.528223] RAX: 1ffff11010c5432f RBX: ffff8880862a1978 RCX: ffffffff858e8a2e [ 340.535486] RDX: 0000000000000000 RSI: ffffffff858e8a40 RDI: 0000000000000001 [ 340.542742] RBP: ffff88809a40ee48 R08: ffff88809b45e0c0 R09: 0000000000000009 [ 340.550004] R10: ffff88809b45eaa8 R11: 0000000057e366b4 R12: dffffc0000000000 [ 340.557346] R13: ffff8880862a16c0 R14: ffff8880862a1a18 R15: ffff8880862a1a10 [ 340.564623] ? hhf_dequeue+0x65e/0xa00 [ 340.568495] ? hhf_dequeue+0x670/0xa00 [ 340.572371] ? hhf_dequeue+0x670/0xa00 [ 340.576301] __qdisc_run+0x1e7/0x1960 [ 340.580139] __dev_queue_xmit+0x165c/0x2fe0 [ 340.584458] ? netdev_pick_tx+0x300/0x300 [ 340.588596] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 340.595121] ? br_nf_post_routing+0x780/0x12f0 [ 340.599711] ? br_forward_finish+0x235/0x400 [ 340.604112] ? find_held_lock+0x35/0x130 [ 340.608168] ? br_forward_finish+0x235/0x400 [ 340.612567] dev_queue_xmit+0x18/0x20 [ 340.616355] ? dev_queue_xmit+0x18/0x20 [ 340.620320] br_dev_queue_push_xmit+0x405/0x5d0 [ 340.624977] ? kasan_check_read+0x11/0x20 [ 340.629116] br_forward_finish+0xfa/0x400 [ 340.633257] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 340.638091] ? br_fdb_add.cold+0x8a/0x8a [ 340.642144] ? kasan_check_read+0x11/0x20 [ 340.646281] __br_forward+0x647/0xb30 [ 340.650072] ? br_forward_finish+0x400/0x400 [ 340.654469] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 340.659316] deliver_clone+0x61/0xc0 [ 340.663016] br_flood+0x4da/0x710 [ 340.666463] br_dev_xmit+0xeeb/0x1490 [ 340.670254] ? br_poll_controller+0x10/0x10 [ 340.674584] ? __lock_is_held+0xb6/0x140 [ 340.678658] dev_hard_start_xmit+0x1a5/0x980 [ 340.683143] ? check_preemption_disabled+0x48/0x290 [ 340.688163] __dev_queue_xmit+0x2704/0x2fe0 [ 340.692490] ? netdev_pick_tx+0x300/0x300 [ 340.696671] ? ip6_finish_output2+0xac0/0x2550 [ 340.701265] ? find_held_lock+0x35/0x130 [ 340.705328] ? ip6_finish_output2+0xb7f/0x2550 [ 340.709905] ? mark_held_locks+0xb1/0x100 [ 340.714052] dev_queue_xmit+0x18/0x20 [ 340.717841] ? dev_queue_xmit+0x18/0x20 [ 340.721879] neigh_resolve_output+0x5b7/0x980 [ 340.726376] ip6_finish_output2+0xb7f/0x2550 [ 340.730787] ? find_held_lock+0x35/0x130 [ 340.734869] ? ip6_mtu+0x2e6/0x460 [ 340.738400] ? ip6_forward_finish+0x4d0/0x4d0 [ 340.742880] ? lock_downgrade+0x810/0x810 [ 340.747029] ? kasan_check_read+0x11/0x20 [ 340.751188] ip6_finish_output+0x574/0xbe0 [ 340.755410] ? ip6_finish_output+0x574/0xbe0 [ 340.759811] ip6_output+0x235/0x7c0 [ 340.763426] ? ip6_finish_output+0xbe0/0xbe0 [ 340.767827] ? ip6_fragment+0x3770/0x3770 [ 340.771967] ndisc_send_skb+0xf3b/0x1460 [ 340.776022] ? nf_hook.constprop.0+0x560/0x560 [ 340.780644] ? skb_set_owner_w+0x24c/0x360 [ 340.784870] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 340.789879] ndisc_send_ns+0x3a9/0x850 [ 340.793755] ? mark_held_locks+0xb1/0x100 [ 340.797892] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 340.803424] ? ndisc_netdev_event+0x470/0x470 [ 340.807933] ? lockdep_hardirqs_on+0x415/0x5d0 [ 340.812514] ? addrconf_dad_work+0xac4/0x1150 [ 340.816994] ? trace_hardirqs_on+0x67/0x220 [ 340.821305] ? addrconf_dad_work+0xac4/0x1150 [ 340.825796] addrconf_dad_work+0xb88/0x1150 [ 340.830110] ? addrconf_dad_completed+0xbb0/0xbb0 [ 340.834945] process_one_work+0x989/0x1750 [ 340.839174] ? pwq_dec_nr_in_flight+0x320/0x320 [ 340.843828] ? lock_acquire+0x16f/0x3f0 [ 340.847793] ? kasan_check_write+0x14/0x20 [ 340.852026] ? do_raw_spin_lock+0xc8/0x240 [ 340.856253] worker_thread+0x98/0xe40 [ 340.860050] ? trace_hardirqs_on+0x67/0x220 [ 340.864367] kthread+0x354/0x420 [ 340.867719] ? process_one_work+0x1750/0x1750 [ 340.872204] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 340.877732] ret_from_fork+0x24/0x30