[ 69.116584][ T26] audit: type=1800 audit(1568272671.116:31): pid=10228 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=2436 res=0 [ 69.172321][ T26] audit: type=1800 audit(1568272671.126:32): pid=10228 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=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] 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 '10.128.1.7' (ECDSA) to the list of known hosts. syzkaller login: [ 290.558006][ T26] kauditd_printk_skb: 3 callbacks suppressed [ 290.558020][ T26] audit: type=1400 audit(1568272892.566:36): avc: denied { map } for pid=10415 comm="syz-executor840" path="/root/syz-executor840533705" 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 [ 290.593374][T10416] IPVS: ftp: loaded support on port[0] = 21 [ 290.644626][T10416] chnl_net:caif_netlink_parms(): no params data found [ 290.666481][T10416] bridge0: port 1(bridge_slave_0) entered blocking state [ 290.673708][T10416] bridge0: port 1(bridge_slave_0) entered disabled state [ 290.681250][T10416] device bridge_slave_0 entered promiscuous mode [ 290.688612][T10416] bridge0: port 2(bridge_slave_1) entered blocking state [ 290.695815][T10416] bridge0: port 2(bridge_slave_1) entered disabled state [ 290.703591][T10416] device bridge_slave_1 entered promiscuous mode [ 290.716778][T10416] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 290.727367][T10416] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 290.743994][T10416] team0: Port device team_slave_0 added [ 290.751236][T10416] team0: Port device team_slave_1 added [ 290.829150][T10416] device hsr_slave_0 entered promiscuous mode [ 290.907731][T10416] device hsr_slave_1 entered promiscuous mode [ 290.963180][T10416] bridge0: port 2(bridge_slave_1) entered blocking state [ 290.970665][T10416] bridge0: port 2(bridge_slave_1) entered forwarding state [ 290.978028][T10416] bridge0: port 1(bridge_slave_0) entered blocking state [ 290.985515][T10416] bridge0: port 1(bridge_slave_0) entered forwarding state [ 291.011554][T10416] 8021q: adding VLAN 0 to HW filter on device bond0 [ 291.022619][ T2834] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 291.041322][ T2834] bridge0: port 1(bridge_slave_0) entered disabled state [ 291.049316][ T2834] bridge0: port 2(bridge_slave_1) entered disabled state [ 291.057057][ T2834] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 291.067612][T10416] 8021q: adding VLAN 0 to HW filter on device team0 [ 291.078741][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 291.087370][ T22] bridge0: port 1(bridge_slave_0) entered blocking state [ 291.094472][ T22] bridge0: port 1(bridge_slave_0) entered forwarding state [ 291.102126][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 291.111189][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 291.118258][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 291.131970][ T2834] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 291.140686][ T2834] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 291.150394][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 291.162817][T10416] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 291.173813][T10416] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 291.185598][ T2834] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 291.194033][ T2834] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 291.202210][ T2834] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 291.215765][T10416] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 396.247439][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 396.254078][ C0] rcu: 0-...!: (10500 ticks this GP) idle=d8e/0/0x3 softirq=10340/10340 fqs=0 [ 396.263421][ C0] (t=10500 jiffies g=10433 q=91) [ 396.268428][ C0] rcu: rcu_preempt kthread starved for 10500 jiffies! g10433 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 396.279893][ C0] rcu: RCU grace-period kthread stack dump: [ 396.285760][ C0] rcu_preempt I29520 10 2 0x80004000 [ 396.292074][ C0] Call Trace: [ 396.295440][ C0] __schedule+0x755/0x1580 [ 396.299841][ C0] ? __sched_text_start+0x8/0x8 [ 396.304676][ C0] schedule+0xd9/0x260 [ 396.308726][ C0] schedule_timeout+0x486/0xc50 [ 396.313555][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 396.318470][ C0] ? usleep_range+0x170/0x170 [ 396.323126][ C0] ? trace_hardirqs_on+0x67/0x240 [ 396.328129][ C0] ? __kasan_check_read+0x11/0x20 [ 396.333135][ C0] ? __next_timer_interrupt+0x1a0/0x1a0 [ 396.338659][ C0] ? swake_up_one+0x60/0x60 [ 396.343138][ C0] ? trace_hardirqs_on+0x67/0x240 [ 396.348155][ C0] rcu_gp_kthread+0x9b2/0x18c0 [ 396.352902][ C0] ? rcu_barrier+0x310/0x310 [ 396.357472][ C0] ? trace_hardirqs_on+0x67/0x240 [ 396.362615][ C0] ? __kasan_check_read+0x11/0x20 [ 396.367637][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 396.373866][ C0] ? __kthread_parkme+0x108/0x1c0 [ 396.378873][ C0] ? __kasan_check_read+0x11/0x20 [ 396.383900][ C0] kthread+0x361/0x430 [ 396.387957][ C0] ? rcu_barrier+0x310/0x310 [ 396.392533][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 396.399286][ C0] ret_from_fork+0x24/0x30 [ 396.403725][ C0] NMI backtrace for cpu 0 [ 396.408041][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc8+ #0 [ 396.415128][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 396.425338][ C0] Call Trace: [ 396.429386][ C0] [ 396.432292][ C0] dump_stack+0x172/0x1f0 [ 396.436606][ C0] nmi_cpu_backtrace.cold+0x70/0xb2 [ 396.441784][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 396.448027][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 396.453639][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 396.459599][ C0] arch_trigger_cpumask_backtrace+0x14/0x20 [ 396.465472][ C0] rcu_dump_cpu_stacks+0x183/0x1cf [ 396.470575][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 396.476100][ C0] ? raise_softirq+0x138/0x340 [ 396.480856][ C0] update_process_times+0x32/0x80 [ 396.485873][ C0] tick_sched_handle+0xa2/0x190 [ 396.490703][ C0] tick_sched_timer+0x53/0x140 [ 396.495448][ C0] __hrtimer_run_queues+0x364/0xe40 [ 396.500627][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 396.505903][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 396.511429][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 396.517439][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 396.523571][ C0] hrtimer_interrupt+0x314/0x770 [ 396.528549][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 396.534085][ C0] apic_timer_interrupt+0xf/0x20 [ 396.539041][ C0] RIP: 0010:hhf_dequeue+0x513/0xa20 [ 396.544222][ C0] Code: 08 48 c1 e8 03 42 80 3c 20 00 0f 85 12 04 00 00 49 89 1f e9 4b fb ff ff e8 6a 15 ac fb 48 8b 45 b8 4c 8b 75 c8 42 80 3c 20 00 <0f> 85 3a 04 00 00 49 8b 85 90 03 00 00 48 39 45 c8 0f 85 4b fb ff [ 396.563803][ C0] RSP: 0018:ffff8880ae808f28 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 396.572191][ C0] RAX: 1ffff110121fe2ba RBX: ffff888090ff1538 RCX: ffffffff85c660f9 [ 396.580140][ C0] RDX: 0000000000000100 RSI: ffffffff85c65f86 RDI: ffff888090ff1540 [ 396.588361][ C0] RBP: ffff8880ae808f78 R08: ffffffff88c7a1c0 R09: 0000000000000000 [ 396.596313][ C0] R10: fffffbfff134afaf R11: ffffffff88c7a1c0 R12: dffffc0000000000 [ 396.604263][ C0] R13: ffff888090ff1240 R14: ffff888090ff15d0 R15: ffff888090ff15d0 [ 396.612220][ C0] ? apic_timer_interrupt+0xa/0x20 [ 396.617312][ C0] ? hhf_dequeue+0x679/0xa20 [ 396.621880][ C0] ? hhf_dequeue+0x506/0xa20 [ 396.626450][ C0] ? hhf_dequeue+0x506/0xa20 [ 396.631084][ C0] __qdisc_run+0x1e7/0x19d0 [ 396.635590][ C0] ? dev_queue_xmit+0x18/0x20 [ 396.640264][ C0] __dev_queue_xmit+0x16f1/0x3650 [ 396.645269][ C0] ? __local_bh_enable_ip+0x15a/0x270 [ 396.650634][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 396.655904][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 396.662161][ C0] ? br_nf_post_routing+0xd73/0x1d30 [ 396.667463][ C0] ? br_forward_finish+0x235/0x400 [ 396.672553][ C0] ? __kasan_check_read+0x11/0x20 [ 396.677555][ C0] ? __dev_queue_xmit+0x2b15/0x3650 [ 396.682744][ C0] dev_queue_xmit+0x18/0x20 [ 396.687236][ C0] ? dev_queue_xmit+0x18/0x20 [ 396.691903][ C0] br_dev_queue_push_xmit+0x3f3/0x5c0 [ 396.697300][ C0] ? nf_hook_slow+0xf0/0x1e0 [ 396.701871][ C0] br_forward_finish+0xfa/0x400 [ 396.706702][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 396.712239][ C0] ? br_fdb_add.cold+0x8c/0x8c [ 396.716999][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 396.722698][ C0] ? nf_hook_slow+0xf0/0x1e0 [ 396.727269][ C0] __br_forward+0x641/0xb00 [ 396.731751][ C0] ? br_forward_finish+0x400/0x400 [ 396.736861][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 396.742385][ C0] deliver_clone+0x61/0xc0 [ 396.746784][ C0] maybe_deliver+0x2c7/0x390 [ 396.751363][ C0] br_flood+0x13a/0x3d0 [ 396.755536][ C0] br_dev_xmit+0x98c/0x15a0 [ 396.760021][ C0] ? br_poll_controller+0x10/0x10 [ 396.765024][ C0] ? netif_skb_features+0x6c2/0xb90 [ 396.770244][ C0] ? netdev_set_sb_channel+0xe0/0xe0 [ 396.775514][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 396.782228][ C0] ? validate_xmit_xfrm+0x43c/0xf10 [ 396.787928][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 396.794148][ C0] dev_hard_start_xmit+0x1a3/0x9c0 [ 396.799242][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 396.805461][ C0] __dev_queue_xmit+0x2b15/0x3650 [ 396.810482][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 396.815779][ C0] ? __ip6_finish_output+0x444/0xa50 [ 396.821043][ C0] ? __kasan_check_read+0x11/0x20 [ 396.826084][ C0] ? ipv6_chk_mcast_addr+0x315/0x6f0 [ 396.831355][ C0] ? lock_downgrade+0x920/0x920 [ 396.836186][ C0] ? lock_acquire+0x190/0x410 [ 396.840840][ C0] ? __ip6_finish_output+0x444/0xa50 [ 396.846107][ C0] dev_queue_xmit+0x18/0x20 [ 396.850598][ C0] ? dev_queue_xmit+0x18/0x20 [ 396.855255][ C0] ip6_finish_output2+0xf58/0x2520 [ 396.860345][ C0] ? ip6_forward_finish+0x530/0x530 [ 396.865555][ C0] ? ip6_mtu+0x16f/0x460 [ 396.869782][ C0] __ip6_finish_output+0x444/0xa50 [ 396.874870][ C0] ? __ip6_finish_output+0x444/0xa50 [ 396.880145][ C0] ip6_finish_output+0x38/0x1f0 [ 396.884971][ C0] ip6_output+0x235/0x7c0 [ 396.889300][ C0] ? ip6_finish_output+0x1f0/0x1f0 [ 396.894390][ C0] ? __ip6_finish_output+0xa50/0xa50 [ 396.899653][ C0] ? icmp6_dst_alloc+0x432/0x660 [ 396.904570][ C0] mld_sendpack+0x9c7/0xea0 [ 396.909055][ C0] ? nf_hook.constprop.0+0x560/0x560 [ 396.915275][ C0] ? mld_ifc_timer_expire+0x437/0x8a0 [ 396.920661][ C0] ? __local_bh_enable_ip+0x15a/0x270 [ 396.926024][ C0] mld_ifc_timer_expire+0x449/0x8a0 [ 396.931207][ C0] call_timer_fn+0x1ac/0x780 [ 396.935777][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 396.941146][ C0] ? msleep_interruptible+0x150/0x150 [ 396.946505][ C0] ? trace_hardirqs_on+0x67/0x240 [ 396.951507][ C0] ? __kasan_check_read+0x11/0x20 [ 396.956508][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 396.961857][ C0] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 396.967218][ C0] run_timer_softirq+0x697/0x17a0 [ 396.972223][ C0] ? add_timer+0x930/0x930 [ 396.976619][ C0] ? kvm_clock_read+0x18/0x30 [ 396.981445][ C0] ? kvm_sched_clock_read+0x9/0x20 [ 396.986545][ C0] ? sched_clock+0x2e/0x50 [ 396.990942][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 396.995775][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 397.001998][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 397.008220][ C0] __do_softirq+0x262/0x98c [ 397.012700][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 397.017532][ C0] irq_exit+0x19b/0x1e0 [ 397.021674][ C0] smp_apic_timer_interrupt+0x1a3/0x610 [ 397.027201][ C0] apic_timer_interrupt+0xf/0x20 [ 397.032111][ C0] [ 397.035044][ C0] RIP: 0010:native_safe_halt+0xe/0x10 [ 397.040411][ C0] Code: 38 73 6e fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 24 1b 4a 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 14 1b 4a 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 ee 32 22 fa e8 39 [ 397.060003][ C0] RSP: 0018:ffffffff88c07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 397.068408][ C0] RAX: 1ffffffff11a5e8d RBX: ffffffff88c7a1c0 RCX: 1ffffffff134b5ee [ 397.076358][ C0] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c [ 397.084317][ C0] RBP: ffffffff88c07d18 R08: ffffffff88c7a1c0 R09: fffffbfff118f439 [ 397.092275][ C0] R10: fffffbfff118f438 R11: ffffffff88c7a1c7 R12: dffffc0000000000 [ 397.100226][ C0] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000000 [ 397.108183][ C0] ? trace_hardirqs_on+0x5e/0x240 [ 397.113186][ C0] ? default_idle+0x1c/0x360 [ 397.117756][ C0] ? default_idle+0x4e/0x360 [ 397.122327][ C0] arch_cpu_idle+0xa/0x10 [ 397.126635][ C0] default_idle_call+0x84/0xb0 [ 397.131376][ C0] do_idle+0x413/0x760 [ 397.135427][ C0] ? arch_cpu_idle_exit+0x80/0x80 [ 397.140439][ C0] ? trace_hardirqs_on+0x67/0x240 [ 397.145442][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 397.151673][ C0] ? debug_smp_processor_id+0x3c/0x214 [ 397.157110][ C0] cpu_startup_entry+0x1b/0x20 [ 397.161851][ C0] rest_init+0x245/0x37b [ 397.166125][ C0] arch_call_rest_init+0xe/0x1b [ 397.170973][ C0] start_kernel+0x912/0x951 [ 397.175456][ C0] ? mem_encrypt_init+0xb/0xb [ 397.180124][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 397.186341][ C0] ? x86_family+0x41/0x50 [ 397.190650][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 397.196880][ C0] x86_64_start_reservations+0x29/0x2b [ 397.202326][ C0] x86_64_start_kernel+0x77/0x7b [ 397.207243][ C0] secondary_startup_64+0xa4/0xb0