[ 68.962079][ T26] audit: type=1800 audit(1568328821.548:31): pid=10215 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 [ 68.962100][ T26] audit: type=1800 audit(1568328821.548:32): pid=10215 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 '10.128.0.153' (ECDSA) to the list of known hosts. syzkaller login: [ 77.438430][ T26] kauditd_printk_skb: 3 callbacks suppressed [ 77.438445][ T26] audit: type=1400 audit(1568328830.068:36): avc: denied { map } for pid=10406 comm="syz-executor882" path="/root/syz-executor882151224" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 77.479861][T10407] IPVS: ftp: loaded support on port[0] = 21 [ 77.521783][T10407] chnl_net:caif_netlink_parms(): no params data found [ 77.544085][T10407] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.551699][T10407] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.559189][T10407] device bridge_slave_0 entered promiscuous mode [ 77.566517][T10407] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.573562][T10407] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.581725][T10407] device bridge_slave_1 entered promiscuous mode [ 77.594918][T10407] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.604992][T10407] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.620625][T10407] team0: Port device team_slave_0 added [ 77.627544][T10407] team0: Port device team_slave_1 added [ 77.705850][T10407] device hsr_slave_0 entered promiscuous mode [ 77.754673][T10407] device hsr_slave_1 entered promiscuous mode [ 77.820176][T10407] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.827237][T10407] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.834580][T10407] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.841655][T10407] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.864649][T10407] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.876262][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.894247][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.912211][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.919842][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 77.930113][T10407] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.939082][T10409] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.947431][T10409] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.954545][T10409] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.963918][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.972241][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.979301][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.993559][T10409] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.002573][T10409] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.012447][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready executing program [ 78.022791][T10409] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.033148][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.042339][T10407] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.057053][T10407] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 183.104268][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 183.111036][ C0] rcu: 0-....: (10500 ticks this GP) idle=cf2/0/0x3 softirq=11748/11748 fqs=5250 [ 183.120290][ C0] (t=10502 jiffies g=10221 q=114) [ 183.125399][ C0] NMI backtrace for cpu 0 [ 183.129702][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc8+ #0 [ 183.136780][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 183.146817][ C0] Call Trace: [ 183.150078][ C0] [ 183.152924][ C0] dump_stack+0x172/0x1f0 [ 183.157234][ C0] nmi_cpu_backtrace.cold+0x70/0xb2 [ 183.162408][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 183.168671][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 183.174279][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 183.180240][ C0] arch_trigger_cpumask_backtrace+0x14/0x20 [ 183.186112][ C0] rcu_dump_cpu_stacks+0x183/0x1cf [ 183.191220][ C0] ? find_next_bit+0x107/0x130 [ 183.195963][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 183.201487][ C0] ? raise_softirq+0x138/0x340 [ 183.206234][ C0] update_process_times+0x32/0x80 [ 183.211237][ C0] tick_sched_handle+0xa2/0x190 [ 183.216073][ C0] tick_sched_timer+0x53/0x140 [ 183.220814][ C0] __hrtimer_run_queues+0x364/0xe40 [ 183.225991][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 183.231255][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 183.236775][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 183.242468][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 183.248509][ C0] hrtimer_interrupt+0x314/0x770 [ 183.253427][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 183.258950][ C0] apic_timer_interrupt+0xf/0x20 [ 183.263863][ C0] RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 183.270692][ C0] Code: 8b 4d 08 e8 18 ff ff ff 5d c3 66 0f 1f 44 00 00 55 40 0f b6 d6 40 0f b6 f7 bf 01 00 00 00 48 89 e5 48 8b 4d 08 e8 f6 fe ff ff <5d> c3 0f 1f 40 00 55 0f b7 d6 0f b7 f7 bf 03 00 00 00 48 89 e5 48 [ 183.290273][ C0] RSP: 0018:ffff8880ae809028 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 [ 183.298673][ C0] RAX: 0000000000000702 RBX: ffff88808d4439b8 RCX: ffffffff85c66051 [ 183.306620][ C0] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000001 [ 183.314566][ C0] RBP: ffff8880ae809028 R08: ffffffff88c7a1c0 R09: 0000000000000000 [ 183.322527][ C0] R10: fffffbfff134afaf R11: ffffffff88c7a1c0 R12: dffffc0000000000 [ 183.330488][ C0] R13: ffff88808d4436c0 R14: 0000000000000001 R15: 0000000000000000 [ 183.338462][ C0] ? apic_timer_interrupt+0xa/0x20 [ 183.343560][ C0] ? hhf_dequeue+0x5d1/0xa20 [ 183.348137][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 183.354366][ C0] hhf_dequeue+0x5d1/0xa20 [ 183.358768][ C0] __qdisc_run+0x1e7/0x19d0 [ 183.363264][ C0] ? dev_queue_xmit+0x18/0x20 [ 183.367928][ C0] __dev_queue_xmit+0x16f1/0x3650 [ 183.372930][ C0] ? __local_bh_enable_ip+0x15a/0x270 [ 183.378283][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 183.383979][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 183.390205][ C0] ? br_nf_post_routing+0xd73/0x1d30 [ 183.395486][ C0] ? br_forward_finish+0x235/0x400 [ 183.400586][ C0] ? __kasan_check_read+0x11/0x20 [ 183.405602][ C0] ? __dev_queue_xmit+0x2b15/0x3650 [ 183.410783][ C0] dev_queue_xmit+0x18/0x20 [ 183.415278][ C0] ? dev_queue_xmit+0x18/0x20 [ 183.419935][ C0] br_dev_queue_push_xmit+0x3f3/0x5c0 [ 183.425286][ C0] ? nf_hook_slow+0xf0/0x1e0 [ 183.429856][ C0] br_forward_finish+0xfa/0x400 [ 183.434694][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 183.440220][ C0] ? br_fdb_add.cold+0x8c/0x8c [ 183.444961][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 183.450666][ C0] ? nf_hook_slow+0xf0/0x1e0 [ 183.455241][ C0] __br_forward+0x641/0xb00 [ 183.459722][ C0] ? br_forward_finish+0x400/0x400 [ 183.464820][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 183.470347][ C0] deliver_clone+0x61/0xc0 [ 183.474742][ C0] maybe_deliver+0x2c7/0x390 [ 183.479308][ C0] br_flood+0x13a/0x3d0 [ 183.483467][ C0] br_dev_xmit+0x98c/0x15a0 [ 183.487966][ C0] ? br_poll_controller+0x10/0x10 [ 183.492989][ C0] ? netif_skb_features+0x6c2/0xb90 [ 183.498184][ C0] ? netdev_set_sb_channel+0xe0/0xe0 [ 183.503459][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 183.509688][ C0] ? validate_xmit_xfrm+0x43c/0xf10 [ 183.514962][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 183.521184][ C0] dev_hard_start_xmit+0x1a3/0x9c0 [ 183.526283][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 183.532503][ C0] __dev_queue_xmit+0x2b15/0x3650 [ 183.537505][ C0] ? __nf_conntrack_find_get+0xa97/0x13a0 [ 183.543208][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 183.548472][ C0] ? __ip_finish_output+0x5fc/0xb90 [ 183.553649][ C0] ? __kasan_check_read+0x11/0x20 [ 183.558652][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 183.564874][ C0] ? lock_downgrade+0x920/0x920 [ 183.569705][ C0] ? lock_acquire+0x190/0x410 [ 183.574359][ C0] ? __ip_finish_output+0x5fc/0xb90 [ 183.579536][ C0] dev_queue_xmit+0x18/0x20 [ 183.584023][ C0] ? dev_queue_xmit+0x18/0x20 [ 183.588680][ C0] ip_finish_output2+0x1726/0x2570 [ 183.593770][ C0] ? nf_ct_deliver_cached_events+0x23d/0x6e0 [ 183.599728][ C0] ? ip_frag_next+0x910/0x910 [ 183.604383][ C0] ? __kasan_check_read+0x11/0x20 [ 183.609386][ C0] __ip_finish_output+0x5fc/0xb90 [ 183.614385][ C0] ? __ip_finish_output+0x5fc/0xb90 [ 183.619562][ C0] ? audit_alloc_mark+0x430/0x500 [ 183.624567][ C0] ip_finish_output+0x38/0x1f0 [ 183.629310][ C0] ip_output+0x21f/0x640 [ 183.633545][ C0] ? ip_mc_output+0xf40/0xf40 [ 183.638210][ C0] ? __ip_finish_output+0xb90/0xb90 [ 183.643383][ C0] ? __kasan_check_read+0x11/0x20 [ 183.648385][ C0] ip_local_out+0xbb/0x190 [ 183.652783][ C0] igmpv3_sendpack+0x1b5/0x2c0 [ 183.657527][ C0] igmp_ifc_timer_expire+0x687/0xa00 [ 183.662796][ C0] ? call_timer_fn+0xe0/0x780 [ 183.667461][ C0] call_timer_fn+0x1ac/0x780 [ 183.672039][ C0] ? __ip_mc_dec_group+0x520/0x520 [ 183.677220][ C0] ? msleep_interruptible+0x150/0x150 [ 183.682571][ C0] ? trace_hardirqs_on+0x67/0x240 [ 183.687580][ C0] ? __kasan_check_read+0x11/0x20 [ 183.692582][ C0] ? __ip_mc_dec_group+0x520/0x520 [ 183.697668][ C0] ? __ip_mc_dec_group+0x520/0x520 [ 183.702765][ C0] run_timer_softirq+0x697/0x17a0 [ 183.707859][ C0] ? add_timer+0x930/0x930 [ 183.712250][ C0] ? kvm_clock_read+0x18/0x30 [ 183.716902][ C0] ? kvm_sched_clock_read+0x9/0x20 [ 183.721988][ C0] ? sched_clock+0x2e/0x50 [ 183.726381][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 183.731239][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 183.737472][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 183.743709][ C0] __do_softirq+0x262/0x98c [ 183.748198][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 183.753031][ C0] irq_exit+0x19b/0x1e0 [ 183.757176][ C0] smp_apic_timer_interrupt+0x1a3/0x610 [ 183.762700][ C0] apic_timer_interrupt+0xf/0x20 [ 183.767608][ C0] [ 183.770530][ C0] RIP: 0010:native_safe_halt+0xe/0x10 [ 183.775885][ C0] Code: 78 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 79 [ 183.795556][ C0] RSP: 0018:ffffffff88c07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 183.803945][ C0] RAX: 1ffffffff11a5e8d RBX: ffffffff88c7a1c0 RCX: 1ffffffff134b5ee [ 183.811894][ C0] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c [ 183.819841][ C0] RBP: ffffffff88c07d18 R08: ffffffff88c7a1c0 R09: fffffbfff118f439 [ 183.827792][ C0] R10: fffffbfff118f438 R11: ffffffff88c7a1c7 R12: dffffc0000000000 [ 183.835741][ C0] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000000 [ 183.843701][ C0] ? trace_hardirqs_on+0x5e/0x240 [ 183.848706][ C0] ? default_idle+0x1c/0x360 [ 183.853275][ C0] ? default_idle+0x4e/0x360 [ 183.857844][ C0] arch_cpu_idle+0xa/0x10 [ 183.862153][ C0] default_idle_call+0x84/0xb0 [ 183.866893][ C0] do_idle+0x413/0x760 [ 183.870940][ C0] ? arch_cpu_idle_exit+0x80/0x80 [ 183.875939][ C0] ? trace_hardirqs_on+0x67/0x240 [ 183.880940][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 183.887161][ C0] ? debug_smp_processor_id+0x3c/0x214 [ 183.892605][ C0] cpu_startup_entry+0x1b/0x20 [ 183.897358][ C0] rest_init+0x245/0x37b [ 183.901581][ C0] arch_call_rest_init+0xe/0x1b [ 183.906406][ C0] start_kernel+0x912/0x951 [ 183.910890][ C0] ? mem_encrypt_init+0xb/0xb [ 183.915554][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 183.921769][ C0] ? x86_family+0x41/0x50 [ 183.926076][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 183.932291][ C0] x86_64_start_reservations+0x29/0x2b [ 183.937724][ C0] x86_64_start_kernel+0x77/0x7b [ 183.942641][ C0] secondary_startup_64+0xa4/0xb0 [ 183.948167][T10410] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-... } 10543 jiffies s: 113 root: 0x1/. [ 183.961716][T10410] rcu: blocking rcu_node structures: [ 183.967016][T10410] Task dump for CPU 0: [ 183.971069][T10410] swapper/0 R running task 27768 0 0 0x80004008 [ 183.979409][T10410] Call Trace: [ 183.982700][T10410] ? apic_timer_interrupt+0xa/0x20 [ 183.987828][T10410] ? trace_hardirqs_on+0x5e/0x240 [ 183.992842][T10410] ? default_idle+0x1c/0x360 [ 183.997858][T10410] ? native_safe_halt+0xe/0x10 [ 184.002612][T10410] ? default_idle+0x4e/0x360 [ 184.007219][T10410] ? arch_cpu_idle+0xa/0x10 [ 184.011721][T10410] ? default_idle_call+0x84/0xb0 [ 184.017079][T10410] ? do_idle+0x413/0x760 [ 184.021321][T10410] ? arch_cpu_idle_exit+0x80/0x80 [ 184.026362][T10410] ? trace_hardirqs_on+0x67/0x240 [ 184.031401][T10410] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 184.038062][T10410] ? debug_smp_processor_id+0x3c/0x214 [ 184.043521][T10410] ? cpu_startup_entry+0x1b/0x20 [ 184.048477][T10410] ? rest_init+0x245/0x37b [ 184.052902][T10410] ? arch_call_rest_init+0xe/0x1b [ 184.058355][T10410] ? start_kernel+0x912/0x951 [ 184.063089][T10410] ? mem_encrypt_init+0xb/0xb [ 184.067833][T10410] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 184.074077][T10410] ? x86_family+0x41/0x50 [ 184.078987][T10410] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 184.085254][T10410] ? x86_64_start_reservations+0x29/0x2b [ 184.090878][T10410] ? x86_64_start_kernel+0x77/0x7b [ 184.096418][T10410] ? secondary_startup_64+0xa4/0xb0