Starting mcstransd: [ 37.424172] audit: type=1800 audit(1568535476.548:32): pid=7338 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 file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 38.027351] audit: type=1800 audit(1568535477.158:33): pid=7338 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 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 41.586004] kauditd_printk_skb: 1 callbacks suppressed [ 41.586018] audit: type=1400 audit(1568535480.718:35): avc: denied { map } for pid=7511 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 '10.128.10.24' (ECDSA) to the list of known hosts. [ 120.248849] audit: type=1400 audit(1568535559.378:36): avc: denied { map } for pid=7523 comm="syz-executor422" path="/root/syz-executor422638703" 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 [ 120.278204] IPVS: ftp: loaded support on port[0] = 21 [ 120.338481] chnl_net:caif_netlink_parms(): no params data found [ 120.373116] bridge0: port 1(bridge_slave_0) entered blocking state [ 120.380535] bridge0: port 1(bridge_slave_0) entered disabled state [ 120.389057] device bridge_slave_0 entered promiscuous mode [ 120.396621] bridge0: port 2(bridge_slave_1) entered blocking state [ 120.403042] bridge0: port 2(bridge_slave_1) entered disabled state [ 120.410779] device bridge_slave_1 entered promiscuous mode [ 120.426709] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 120.436049] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 120.452833] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 120.460730] team0: Port device team_slave_0 added [ 120.466394] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 120.473633] team0: Port device team_slave_1 added [ 120.479192] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 120.487230] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 120.566683] device hsr_slave_0 entered promiscuous mode [ 120.635363] device hsr_slave_1 entered promiscuous mode [ 120.685143] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 120.692319] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 120.706513] bridge0: port 2(bridge_slave_1) entered blocking state [ 120.712946] bridge0: port 2(bridge_slave_1) entered forwarding state [ 120.719935] bridge0: port 1(bridge_slave_0) entered blocking state [ 120.726403] bridge0: port 1(bridge_slave_0) entered forwarding state [ 120.757827] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 120.764155] 8021q: adding VLAN 0 to HW filter on device bond0 [ 120.773709] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 120.783376] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 120.802945] bridge0: port 1(bridge_slave_0) entered disabled state [ 120.811810] bridge0: port 2(bridge_slave_1) entered disabled state [ 120.820095] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 120.831018] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 120.838883] 8021q: adding VLAN 0 to HW filter on device team0 [ 120.848186] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 120.856738] bridge0: port 1(bridge_slave_0) entered blocking state [ 120.863241] bridge0: port 1(bridge_slave_0) entered forwarding state [ 120.872718] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 120.881369] bridge0: port 2(bridge_slave_1) entered blocking state [ 120.887974] bridge0: port 2(bridge_slave_1) entered forwarding state [ 120.906363] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 120.914266] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 120.922332] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 120.930355] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 120.940819] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 120.949998] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready executing program [ 120.956287] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 120.968548] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 120.980256] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 226.044582] rcu: INFO: rcu_preempt self-detected stall on CPU [ 226.050847] rcu: 1-...!: (1 GPs behind) idle=ff6/1/0x4000000000000002 softirq=10306/10307 fqs=10 [ 226.060337] rcu: (t=10500 jiffies g=5277 q=28) [ 226.065106] rcu: rcu_preempt kthread starved for 10480 jiffies! g5277 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 226.076023] rcu: RCU grace-period kthread stack dump: [ 226.081289] rcu_preempt I29104 10 2 0x80000000 [ 226.086968] Call Trace: [ 226.089567] __schedule+0x866/0x1dc0 [ 226.093398] ? pci_mmcfg_check_reserved+0x170/0x170 [ 226.098411] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 226.103627] ? lockdep_hardirqs_on+0x415/0x5d0 [ 226.108823] ? trace_hardirqs_on+0x67/0x220 [ 226.113332] schedule+0x92/0x1c0 [ 226.116725] schedule_timeout+0x4db/0xfc0 [ 226.120871] ? usleep_range+0x170/0x170 [ 226.125726] ? trace_hardirqs_on+0x67/0x220 [ 226.130129] ? kasan_check_read+0x11/0x20 [ 226.134362] ? __next_timer_interrupt+0x1a0/0x1a0 [ 226.139294] ? prepare_to_swait_exclusive+0x120/0x120 [ 226.144492] rcu_gp_kthread+0xd5c/0x2190 [ 226.148564] ? rcu_blocking_is_gp+0x90/0x90 [ 226.152895] ? trace_hardirqs_on+0x67/0x220 [ 226.157306] ? kasan_check_read+0x11/0x20 [ 226.161542] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 226.166744] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 226.172506] ? __kthread_parkme+0xfb/0x1b0 [ 226.176745] kthread+0x354/0x420 [ 226.180105] ? rcu_blocking_is_gp+0x90/0x90 [ 226.184425] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 226.190056] ret_from_fork+0x24/0x30 [ 226.193806] NMI backtrace for cpu 1 [ 226.197462] CPU: 1 PID: 18 Comm: ksoftirqd/1 Not tainted 4.19.72 #0 [ 226.203909] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 226.213465] Call Trace: [ 226.216134] [ 226.218291] dump_stack+0x172/0x1f0 [ 226.221947] nmi_cpu_backtrace.cold+0x63/0xa4 [ 226.226473] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 226.231400] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 226.236684] arch_trigger_cpumask_backtrace+0x14/0x20 [ 226.241885] rcu_dump_cpu_stacks+0x189/0x1d5 [ 226.246284] ? wake_up_process+0x10/0x20 [ 226.250342] rcu_check_callbacks.cold+0x5e3/0xd90 [ 226.255360] ? trace_hardirqs_off+0x62/0x220 [ 226.259769] update_process_times+0x32/0x80 [ 226.264494] tick_sched_handle+0xa2/0x190 [ 226.268682] tick_sched_timer+0x47/0x130 [ 226.272755] __hrtimer_run_queues+0x33b/0xdc0 [ 226.277247] ? tick_sched_do_timer+0x1b0/0x1b0 [ 226.282962] ? hrtimer_fixup_activate+0x30/0x30 [ 226.287621] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 226.292715] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 226.298252] hrtimer_interrupt+0x314/0x770 [ 226.302757] smp_apic_timer_interrupt+0x111/0x550 [ 226.307776] apic_timer_interrupt+0xf/0x20 [ 226.312010] [ 226.314238] RIP: 0010:hhf_dequeue+0x58/0xa00 [ 226.322579] Code: 48 c1 e8 03 4c 01 e0 48 89 45 c0 49 8d 85 50 03 00 00 48 89 45 c8 48 c1 e8 03 48 89 45 b8 e8 0f de dc fb 48 8b 45 c0 80 38 00 <0f> 85 8d 07 00 00 48 8b 75 d0 49 8b 85 40 03 00 00 49 89 f6 48 39 [ 226.341650] RSP: 0018:ffff8880aa2a6998 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 226.349356] RAX: ffffed101328ad88 RBX: ffff888099456bb8 RCX: ffffffff858e7e8e [ 226.356705] RDX: 0000000000000100 RSI: ffffffff858e7881 RDI: ffff888099456bc0 [ 226.364259] RBP: ffff8880aa2a69e8 R08: ffff8880aa2944c0 R09: 0000000000000006 [ 226.371954] R10: ffff8880aa294e30 R11: 00000000c2a62997 R12: dffffc0000000000 [ 226.379485] R13: ffff888099456900 R14: ffff888099456c58 R15: ffff888099456c50 [ 226.387038] ? hhf_dequeue+0x65e/0xa00 [ 226.390925] ? hhf_dequeue+0x51/0xa00 [ 226.398628] ? hhf_dequeue+0x51/0xa00 [ 226.402443] __qdisc_run+0x1e7/0x1960 [ 226.406251] __dev_queue_xmit+0x165c/0x2fe0 [ 226.410859] ? deliver_clone+0x61/0xc0 [ 226.414838] ? br_flood+0x5fa/0x710 [ 226.418564] ? br_handle_frame_finish+0xf72/0x1510 [ 226.423500] ? netdev_pick_tx+0x300/0x300 [ 226.427825] ? run_ksoftirqd+0x8e/0x110 [ 226.431789] ? smpboot_thread_fn+0x6a3/0xa30 [ 226.436187] ? kthread+0x354/0x420 [ 226.439728] ? entry_SYSCALL_64_after_hwframe+0xbc/0xbe [ 226.445179] ? __lock_is_held+0xb6/0x140 [ 226.449336] dev_queue_xmit+0x18/0x20 [ 226.453134] ? dev_queue_xmit+0x18/0x20 [ 226.457102] br_dev_queue_push_xmit+0x405/0x5d0 [ 226.461858] ? br_nf_dev_queue_xmit+0x38c/0x1610 [ 226.466609] br_nf_dev_queue_xmit+0x365/0x1610 [ 226.471284] br_nf_post_routing+0x76f/0x12f0 [ 226.475687] ? find_inlist_lock.constprop.0+0x22a/0x230 [ 226.481398] ? br_nf_dev_queue_xmit+0x1610/0x1610 [ 226.486234] ? ipv6_skip_exthdr+0x5b0/0x5c0 [ 226.490564] ? br_nf_pre_routing_finish_bridge+0xaa0/0xaa0 [ 226.496192] nf_hook_slow+0xbc/0x1e0 [ 226.500165] br_forward_finish+0x215/0x400 [ 226.504412] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 226.509259] ? br_fdb_add.cold+0x8a/0x8a [ 226.513321] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 226.518427] ? nf_hook_slow+0xf0/0x1e0 [ 226.522488] br_nf_hook_thresh+0x2e9/0x370 [ 226.526721] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 226.531646] ? setup_pre_routing+0x470/0x470 [ 226.536086] ? find_held_lock+0x35/0x130 [ 226.540142] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 226.545180] br_nf_forward_finish+0x356/0x700 [ 226.549673] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 226.554619] br_nf_forward_ip+0x6b4/0x17c0 [ 226.559067] ? br_nf_forward_finish+0x700/0x700 [ 226.563750] ? refcount_inc_not_zero_checked+0x147/0x200 [ 226.569194] ? br_nf_hook_thresh+0x370/0x370 [ 226.573685] nf_hook_slow+0xbc/0x1e0 [ 226.577406] __br_forward+0x393/0xb30 [ 226.581298] ? br_forward_finish+0x400/0x400 [ 226.585702] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 226.590900] deliver_clone+0x61/0xc0 [ 226.594629] br_flood+0x5fa/0x710 [ 226.598081] br_handle_frame_finish+0xf72/0x1510 [ 226.602832] ? br_handle_local_finish+0x20/0x20 [ 226.607598] ? __lock_is_held+0xb6/0x140 [ 226.611677] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 226.616864] ? nf_hook_slow+0xf0/0x1e0 [ 226.620749] br_nf_hook_thresh+0x2e9/0x370 [ 226.625062] ? br_handle_local_finish+0x20/0x20 [ 226.629735] ? setup_pre_routing+0x470/0x470 [ 226.634137] ? br_handle_local_finish+0x20/0x20 [ 226.638806] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 226.643999] br_nf_pre_routing_finish_ipv6+0x6ed/0xd70 [ 226.649269] ? br_handle_local_finish+0x20/0x20 [ 226.653948] ? kasan_check_read+0x11/0x20 [ 226.658097] br_nf_pre_routing_ipv6+0x4a5/0x8ca [ 226.662765] ? br_validate_ipv6+0xb90/0xb90 [ 226.667086] ? br_nf_pre_routing_finish.cold+0x11d/0x11d [ 226.672619] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 226.678257] ? skb_pull_rcsum+0x164/0x340 [ 226.682455] br_nf_pre_routing+0x1016/0x159c [ 226.686865] ? br_nf_pre_routing_finish+0x1960/0x1960 [ 226.692467] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 226.698109] ? ebt_broute+0x127/0x190 [ 226.701909] nf_hook_slow+0xbc/0x1e0 [ 226.705642] br_handle_frame+0x985/0x1480 [ 226.709783] ? br_handle_frame_finish+0x1510/0x1510 [ 226.714795] ? br_handle_local_finish+0x20/0x20 [ 226.719472] ? br_handle_frame_finish+0x1510/0x1510 [ 226.724488] __netif_receive_skb_core+0xac1/0x3570 [ 226.729503] ? __lock_acquire+0x6ee/0x49c0 [ 226.733737] ? netif_receive_skb+0x2d0/0x2d0 [ 226.738141] ? mark_held_locks+0x100/0x100 [ 226.742371] ? __lock_acquire+0x6ee/0x49c0 [ 226.746690] ? process_backlog+0x482/0x7a0 [ 226.750929] __netif_receive_skb_one_core+0xa8/0x1a0 [ 226.756027] ? __netif_receive_skb_one_core+0xa8/0x1a0 [ 226.761383] ? __netif_receive_skb_core+0x3570/0x3570 [ 226.766577] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 226.772297] ? check_preemption_disabled+0x48/0x290 [ 226.777304] ? lock_acquire+0x16f/0x3f0 [ 226.781278] __netif_receive_skb+0x2c/0x1d0 [ 226.785604] process_backlog+0x23a/0x7a0 [ 226.789665] ? net_rx_action+0x27b/0x1070 [ 226.793810] ? lockdep_hardirqs_on+0x19b/0x5d0 [ 226.798395] net_rx_action+0x4f5/0x1070 [ 226.802373] ? napi_complete_done+0x500/0x500 [ 226.806861] ? sched_clock+0x2e/0x50 [ 226.810576] __do_softirq+0x25c/0x921 [ 226.814368] ? pci_mmcfg_check_reserved+0x170/0x170 [ 226.819399] ? takeover_tasklets+0x7b0/0x7b0 [ 226.823817] run_ksoftirqd+0x8e/0x110 [ 226.827699] smpboot_thread_fn+0x6a3/0xa30 [ 226.831933] ? sort_range+0x30/0x30 [ 226.835642] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 226.841383] ? __kthread_parkme+0xfb/0x1b0 [ 226.845625] kthread+0x354/0x420 [ 226.849096] ? sort_range+0x30/0x30 [ 226.852724] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 226.858260] ret_from_fork+0x24/0x30