[ 37.353820] audit: type=1800 audit(1567899638.141:31): pid=7327 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=2469 res=0 [ 37.353839] audit: type=1800 audit(1567899638.141:32): pid=7327 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=2450 res=0 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.3' (ECDSA) to the list of known hosts. syzkaller login: [ 88.762607] kauditd_printk_skb: 3 callbacks suppressed [ 88.762622] audit: type=1400 audit(1567899689.601:36): avc: denied { map } for pid=7514 comm="syz-executor217" path="/root/syz-executor217663368" 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 [ 88.781983] IPVS: ftp: loaded support on port[0] = 21 [ 88.846077] chnl_net:caif_netlink_parms(): no params data found [ 88.876560] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.883272] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.891200] device bridge_slave_0 entered promiscuous mode [ 88.898544] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.905109] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.912210] device bridge_slave_1 entered promiscuous mode [ 88.926629] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 88.935797] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 88.952242] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 88.959760] team0: Port device team_slave_0 added [ 88.965147] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 88.972450] team0: Port device team_slave_1 added [ 88.977614] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 88.985016] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 89.051614] device hsr_slave_0 entered promiscuous mode [ 89.089791] device hsr_slave_1 entered promiscuous mode [ 89.160307] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 89.167381] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 89.180924] bridge0: port 2(bridge_slave_1) entered blocking state [ 89.187318] bridge0: port 2(bridge_slave_1) entered forwarding state [ 89.194232] bridge0: port 1(bridge_slave_0) entered blocking state [ 89.200625] bridge0: port 1(bridge_slave_0) entered forwarding state [ 89.230598] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 89.236700] 8021q: adding VLAN 0 to HW filter on device bond0 [ 89.245077] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 89.254880] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 89.274451] bridge0: port 1(bridge_slave_0) entered disabled state [ 89.281718] bridge0: port 2(bridge_slave_1) entered disabled state [ 89.288724] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 89.298894] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 89.305945] 8021q: adding VLAN 0 to HW filter on device team0 [ 89.314805] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 89.323684] bridge0: port 1(bridge_slave_0) entered blocking state [ 89.330082] bridge0: port 1(bridge_slave_0) entered forwarding state [ 89.339036] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 89.347005] bridge0: port 2(bridge_slave_1) entered blocking state [ 89.353384] bridge0: port 2(bridge_slave_1) entered forwarding state [ 89.370367] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 89.378436] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 89.386426] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 89.398216] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 89.408464] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 89.418998] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready executing program [ 89.426015] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 89.433834] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 89.441453] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 89.453196] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 89.463626] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 194.489356] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 194.495735] rcu: (detected by 0, t=10502 jiffies, g=5209, q=98) [ 194.501906] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294956557-4294946054), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 194.514562] swapper/0 R running task 28400 0 0 0x80000008 [ 194.521907] Call Trace: [ 194.524500] [ 194.526669] sched_show_task.cold+0x2ee/0x35d [ 194.531175] ? set_rq_offline.part.0+0x140/0x140 [ 194.535940] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 194.540958] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 194.546519] rcu_check_callbacks.cold+0xaa1/0xd90 [ 194.551387] update_process_times+0x32/0x80 [ 194.555721] tick_sched_handle+0xa2/0x190 [ 194.559877] tick_sched_timer+0x47/0x130 [ 194.563947] __hrtimer_run_queues+0x33b/0xdc0 [ 194.568455] ? tick_sched_do_timer+0x1b0/0x1b0 [ 194.573856] ? hrtimer_fixup_activate+0x30/0x30 [ 194.578630] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 194.583680] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 194.589067] hrtimer_interrupt+0x314/0x770 [ 194.593327] smp_apic_timer_interrupt+0x111/0x550 [ 194.598271] apic_timer_interrupt+0xf/0x20 [ 194.602604] RIP: 0010:native_queued_spin_lock_slowpath+0x113/0x9a0 [ 194.609022] Code: 04 02 00 00 00 00 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 d5 06 00 00 48 83 c4 78 5b 41 5c 41 5d 41 5e 41 5f 5d c3 f3 90 82 8b 45 98 48 8d 55 d8 3d 00 01 00 00 0f 84 a8 02 00 00 30 c0 [ 194.628280] RSP: 0018:ffff8880ae807608 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 194.636040] RAX: 0000000000000000 RBX: ffff8880855d05a8 RCX: ffffffff81530ae4 [ 194.643315] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880855d05a8 [ 194.650633] RBP: ffff8880ae8076a8 R08: 1ffff11010aba0b5 R09: ffffed1010aba0b6 [ 194.657968] R10: ffffed1010aba0b5 R11: ffff8880855d05ab R12: 0000000000000001 [ 194.665260] R13: 0000000000000003 R14: ffffed1010aba0b5 R15: 0000000000000001 [ 194.672727] ? apic_timer_interrupt+0xa/0x20 [ 194.677269] ? native_queued_spin_lock_slowpath+0xa4/0x9a0 [ 194.683078] ? native_queued_spin_lock_slowpath+0xa4/0x9a0 [ 194.688709] ? lockdep_hardirqs_on+0x19b/0x5d0 [ 194.693297] ? .slowpath+0x15/0x15 [ 194.696857] ? lock_acquire+0x16f/0x3f0 [ 194.700854] do_raw_spin_lock+0x19d/0x240 [ 194.705012] _raw_spin_lock+0x37/0x40 [ 194.708820] ? __dev_queue_xmit+0x147c/0x2fe0 [ 194.713321] __dev_queue_xmit+0x147c/0x2fe0 [ 194.717654] ? mark_held_locks+0x100/0x100 [ 194.721902] ? netdev_pick_tx+0x300/0x300 [ 194.726231] ? ip6_finish_output+0x574/0xbe0 [ 194.730658] ? find_held_lock+0x35/0x130 [ 194.734726] ? ip6_finish_output+0x574/0xbe0 [ 194.739151] ? mark_held_locks+0xb1/0x100 [ 194.743306] ? ip6_finish_output2+0x1784/0x2550 [ 194.747986] ? ip6_finish_output+0x574/0xbe0 [ 194.752398] ? ip6_finish_output2+0x1784/0x2550 [ 194.757077] dev_queue_xmit+0x18/0x20 [ 194.760883] ? dev_queue_xmit+0x18/0x20 [ 194.764866] ip6_finish_output2+0x12fd/0x2550 [ 194.769376] ? ip6_mtu+0x2e6/0x460 [ 194.772927] ? ip6_forward_finish+0x4d0/0x4d0 [ 194.777515] ? lock_downgrade+0x810/0x810 [ 194.781674] ? kasan_check_read+0x11/0x20 [ 194.785849] ip6_finish_output+0x574/0xbe0 [ 194.790701] ? ip6_finish_output+0x574/0xbe0 [ 194.795125] ip6_output+0x235/0x7c0 [ 194.798764] ? ip6_finish_output+0xbe0/0xbe0 [ 194.803191] ? ip6_fragment+0x3770/0x3770 [ 194.807351] ? icmp6_dst_alloc+0x432/0x660 [ 194.811601] mld_sendpack+0x9d3/0xeb0 [ 194.815655] ? nf_hook.constprop.0+0x560/0x560 [ 194.820255] ? mld_ifc_timer_expire+0x437/0x8a0 [ 194.824931] ? __local_bh_enable_ip+0x15a/0x270 [ 194.829696] mld_ifc_timer_expire+0x449/0x8a0 [ 194.834209] call_timer_fn+0x18d/0x720 [ 194.838419] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 194.843110] ? process_timeout+0x40/0x40 [ 194.847186] ? run_timer_softirq+0x647/0x1700 [ 194.851703] ? trace_hardirqs_on+0x67/0x220 [ 194.856043] ? kasan_check_read+0x11/0x20 [ 194.860289] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 194.865057] run_timer_softirq+0x652/0x1700 [ 194.869481] ? add_timer+0xbe0/0xbe0 [ 194.873203] ? kvm_clock_read+0x18/0x30 [ 194.877184] ? check_preemption_disabled+0x48/0x290 [ 194.882208] ? sched_clock+0x2e/0x50 [ 194.885939] __do_softirq+0x25c/0x921 [ 194.889762] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 194.895304] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 194.901210] irq_exit+0x180/0x1d0 [ 194.904675] smp_apic_timer_interrupt+0x13b/0x550 [ 194.909532] apic_timer_interrupt+0xf/0x20 [ 194.913766] [ 194.916013] RIP: 0010:native_safe_halt+0xe/0x10 [ 194.920687] Code: ff ff 48 89 df e8 82 1b ae fa eb 82 e9 07 00 00 00 0f 00 2d a4 fc 53 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 94 fc 53 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 ce fd 65 fa e8 39 [ 194.939595] RSP: 0018:ffffffff88607ca8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 194.947424] RAX: 1ffffffff10e48c4 RBX: ffffffff88679ec0 RCX: 0000000000000000 [ 194.954859] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff8867a73c [ 194.962322] RBP: ffffffff88607cd8 R08: ffffffff88679ec0 R09: 0000000000000000 [ 194.969606] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 194.976882] R13: ffffffff88724610 R14: 0000000000000000 R15: 0000000000000000 [ 194.984338] ? default_idle+0x4e/0x320 [ 194.988238] arch_cpu_idle+0xa/0x10 [ 194.992042] default_idle_call+0x36/0x90 [ 194.996104] do_idle+0x377/0x560 [ 194.999479] ? arch_cpu_idle_exit+0x80/0x80 [ 195.003806] ? check_preemption_disabled+0x48/0x290 [ 195.010228] cpu_startup_entry+0xc8/0xe0 [ 195.014386] ? cpu_in_idle+0x20/0x20 [ 195.018116] rest_init+0x219/0x222 [ 195.021711] start_kernel+0x88c/0x8c5 [ 195.025521] ? mem_encrypt_init+0xb/0xb [ 195.029517] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 195.035111] ? x86_family+0x41/0x50 [ 195.038832] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 195.044385] x86_64_start_reservations+0x29/0x2b [ 195.049153] x86_64_start_kernel+0x77/0x7b [ 195.053400] secondary_startup_64+0xa4/0xb0 [ 195.057747] rcu: rcu_preempt kthread starved for 10558 jiffies! g5209 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 195.068407] rcu: RCU grace-period kthread stack dump: [ 195.074377] rcu_preempt R running task 29104 10 2 0x80000000 [ 195.084400] Call Trace: [ 195.087046] __schedule+0x866/0x1dc0 [ 195.090885] ? pci_mmcfg_check_reserved+0x170/0x170 [ 195.095908] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 195.101029] ? lockdep_hardirqs_on+0x415/0x5d0 [ 195.105629] ? trace_hardirqs_on+0x67/0x220 [ 195.110135] schedule+0x92/0x1c0 [ 195.113511] schedule_timeout+0x4db/0xfc0 [ 195.117667] ? usleep_range+0x170/0x170 [ 195.121649] ? trace_hardirqs_on+0x67/0x220 [ 195.125978] ? kasan_check_read+0x11/0x20 [ 195.130137] ? __next_timer_interrupt+0x1a0/0x1a0 [ 195.134997] ? prepare_to_swait_exclusive+0x120/0x120 [ 195.140198] rcu_gp_kthread+0xd5c/0x2190 [ 195.144342] ? rcu_blocking_is_gp+0x90/0x90 [ 195.148676] ? trace_hardirqs_on+0x67/0x220 [ 195.153005] ? kasan_check_read+0x11/0x20 [ 195.157355] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 195.162569] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 195.168139] ? __kthread_parkme+0xfb/0x1b0 [ 195.172396] kthread+0x354/0x420 [ 195.175773] ? rcu_blocking_is_gp+0x90/0x90 [ 195.180157] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 195.185829] ret_from_fork+0x24/0x30