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. [ 37.170884] audit: type=1800 audit(1567872882.721:33): pid=7309 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 [ 37.194519] audit: type=1800 audit(1567872882.721:34): pid=7309 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: [ 41.978327] audit: type=1400 audit(1567872887.531:35): avc: denied { map } for pid=7481 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 '10.128.1.55' (ECDSA) to the list of known hosts. [ 48.536357] audit: type=1400 audit(1567872894.081:36): avc: denied { map } for pid=7493 comm="syz-executor014" path="/root/syz-executor014230879" 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 [ 48.559418] IPVS: ftp: loaded support on port[0] = 21 [ 48.613362] chnl_net:caif_netlink_parms(): no params data found [ 48.645458] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.652191] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.659287] device bridge_slave_0 entered promiscuous mode [ 48.666297] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.672752] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.679698] device bridge_slave_1 entered promiscuous mode [ 48.694959] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 48.704664] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 48.721161] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 48.728688] team0: Port device team_slave_0 added [ 48.734044] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 48.741395] team0: Port device team_slave_1 added [ 48.746580] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 48.753980] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 48.809062] device hsr_slave_0 entered promiscuous mode [ 48.847411] device hsr_slave_1 entered promiscuous mode [ 48.887622] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 48.894618] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 48.908704] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.915105] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.922003] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.928417] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.959536] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 48.965621] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.974155] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 48.983341] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.991390] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.998533] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.006967] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 49.016722] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 49.023088] 8021q: adding VLAN 0 to HW filter on device team0 [ 49.032051] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 49.039720] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.046041] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.054880] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 49.063104] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.069542] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.084492] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 49.092506] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 49.102107] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 49.111607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 49.122345] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 49.133216] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 49.140187] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 49.147265] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 49.159274] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 49.169623] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 154.207111] rcu: INFO: rcu_preempt self-detected stall on CPU [ 154.214291] rcu: 1-...!: (10499 ticks this GP) idle=7aa/1/0x4000000000000002 softirq=10051/10051 fqs=16 [ 154.224188] rcu: (t=10500 jiffies g=4737 q=12) [ 154.228950] rcu: rcu_preempt kthread starved for 10468 jiffies! g4737 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 154.239328] rcu: RCU grace-period kthread stack dump: [ 154.244502] rcu_preempt R running task 29104 10 2 0x80000000 [ 154.251694] Call Trace: [ 154.254298] __schedule+0x866/0x1dc0 [ 154.258023] ? pci_mmcfg_check_reserved+0x170/0x170 [ 154.263028] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 154.268123] ? lockdep_hardirqs_on+0x415/0x5d0 [ 154.272695] ? trace_hardirqs_on+0x67/0x220 [ 154.277007] schedule+0x92/0x1c0 [ 154.280362] schedule_timeout+0x4db/0xfc0 [ 154.284501] ? usleep_range+0x170/0x170 [ 154.288473] ? trace_hardirqs_on+0x67/0x220 [ 154.292781] ? kasan_check_read+0x11/0x20 [ 154.296926] ? __next_timer_interrupt+0x1a0/0x1a0 [ 154.301767] ? prepare_to_swait_exclusive+0x120/0x120 [ 154.306948] rcu_gp_kthread+0xd5c/0x2190 [ 154.311028] ? rcu_blocking_is_gp+0x90/0x90 [ 154.315337] ? trace_hardirqs_on+0x67/0x220 [ 154.319646] ? kasan_check_read+0x11/0x20 [ 154.323782] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 154.328874] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 154.334402] ? __kthread_parkme+0xfb/0x1b0 [ 154.338635] kthread+0x354/0x420 [ 154.342770] ? rcu_blocking_is_gp+0x90/0x90 [ 154.347078] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 154.352609] ret_from_fork+0x24/0x30 [ 154.356339] NMI backtrace for cpu 1 [ 154.359958] CPU: 1 PID: 3222 Comm: kworker/1:2 Not tainted 4.19.71 #0 [ 154.370252] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 154.380928] Workqueue: ipv6_addrconf addrconf_dad_work [ 154.386198] Call Trace: [ 154.388794] [ 154.391465] dump_stack+0x172/0x1f0 [ 154.395087] nmi_cpu_backtrace.cold+0x63/0xa4 [ 154.399590] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 154.404512] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 154.409779] arch_trigger_cpumask_backtrace+0x14/0x20 [ 154.414958] rcu_dump_cpu_stacks+0x189/0x1d5 [ 154.419381] ? wake_up_process+0x10/0x20 [ 154.423447] rcu_check_callbacks.cold+0x5e3/0xd90 [ 154.428281] ? trace_hardirqs_off+0x62/0x220 [ 154.432687] update_process_times+0x32/0x80 [ 154.437012] tick_sched_handle+0xa2/0x190 [ 154.441583] tick_sched_timer+0x47/0x130 [ 154.445633] __hrtimer_run_queues+0x33b/0xdc0 [ 154.450121] ? tick_sched_do_timer+0x1b0/0x1b0 [ 154.454694] ? hrtimer_fixup_activate+0x30/0x30 [ 154.459352] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 154.464369] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 154.469733] hrtimer_interrupt+0x314/0x770 [ 154.473966] smp_apic_timer_interrupt+0x111/0x550 [ 154.478799] apic_timer_interrupt+0xf/0x20 [ 154.483015] [ 154.485244] RIP: 0010:hhf_dequeue+0xb9/0xa00 [ 154.489641] Code: 48 8d 7b 10 48 89 f8 48 c1 e8 03 42 0f b6 04 20 84 c0 74 08 3c 03 0f 8e 4e 07 00 00 44 8b 7b 10 31 ff 44 89 fe e8 87 e3 dc fb <45> 85 ff 0f 8e 55 04 00 00 e8 f9 e1 dc fb 4c 8d 43 f0 4c 89 c0 48 [ 154.508530] RSP: 0018:ffff88809bd07448 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 154.516233] RAX: 0000000000000000 RBX: ffff8880971a3db8 RCX: ffffffff858e8489 [ 154.523490] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 [ 154.531020] RBP: ffff88809bd07498 R08: ffff88809bce0100 R09: 0000000000000007 [ 154.538278] R10: ffff88809bce0a98 R11: 00000000272a06e8 R12: dffffc0000000000 [ 154.545546] R13: ffff8880971a3b00 R14: ffff8880971a3e50 R15: 0000000000000000 [ 154.552828] ? hhf_dequeue+0xb9/0xa00 [ 154.556635] ? hhf_dequeue+0xb9/0xa00 [ 154.560426] __qdisc_run+0x1e7/0x1960 [ 154.564224] __dev_queue_xmit+0x165c/0x2fe0 [ 154.568541] ? netdev_pick_tx+0x300/0x300 [ 154.572680] ? ip6_finish_output2+0xac0/0x2550 [ 154.577257] ? find_held_lock+0x35/0x130 [ 154.582087] ? ip6_finish_output2+0xb7f/0x2550 [ 154.586658] ? mark_held_locks+0xb1/0x100 [ 154.590801] dev_queue_xmit+0x18/0x20 [ 154.594589] ? dev_queue_xmit+0x18/0x20 [ 154.598550] neigh_resolve_output+0x5b7/0x980 [ 154.603042] ip6_finish_output2+0xb7f/0x2550 [ 154.607438] ? find_held_lock+0x35/0x130 [ 154.611487] ? ip6_mtu+0x2e6/0x460 [ 154.615168] ? ip6_forward_finish+0x4d0/0x4d0 [ 154.619666] ? lock_downgrade+0x810/0x810 [ 154.623941] ? kasan_check_read+0x11/0x20 [ 154.628107] ip6_finish_output+0x574/0xbe0 [ 154.632347] ? ip6_finish_output+0x574/0xbe0 [ 154.636750] ip6_output+0x235/0x7c0 [ 154.640374] ? ip6_finish_output+0xbe0/0xbe0 [ 154.645213] ? ip6_fragment+0x3770/0x3770 [ 154.649357] ndisc_send_skb+0xf3b/0x1460 [ 154.653415] ? nf_hook.constprop.0+0x560/0x560 [ 154.658078] ? skb_set_owner_w+0x24c/0x360 [ 154.662304] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 154.667312] ndisc_send_ns+0x3a9/0x850 [ 154.671185] ? mark_held_locks+0xb1/0x100 [ 154.675321] ? ndisc_netdev_event+0x470/0x470 [ 154.679804] ? lockdep_hardirqs_on+0x415/0x5d0 [ 154.684373] ? addrconf_dad_work+0xac4/0x1150 [ 154.688858] ? trace_hardirqs_on+0x67/0x220 [ 154.693775] ? addrconf_dad_work+0xac4/0x1150 [ 154.698262] addrconf_dad_work+0xb88/0x1150 [ 154.702590] ? addrconf_dad_completed+0xbb0/0xbb0 [ 154.707429] process_one_work+0x989/0x1750 [ 154.711657] ? pwq_dec_nr_in_flight+0x320/0x320 [ 154.716311] ? lock_acquire+0x16f/0x3f0 [ 154.720275] ? kasan_check_write+0x14/0x20 [ 154.724497] ? do_raw_spin_lock+0xc8/0x240 [ 154.728725] worker_thread+0x98/0xe40 [ 154.732515] ? trace_hardirqs_on+0x67/0x220 [ 154.736856] kthread+0x354/0x420 [ 154.740227] ? process_one_work+0x1750/0x1750 [ 154.744756] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 154.750292] ret_from_fork+0x24/0x30