[ 75.171191][ T26] audit: type=1800 audit(1567861651.588:30): pid=10492 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Starting mcstransd:
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
syzkaller login: [ 79.112670][ T26] kauditd_printk_skb: 4 callbacks suppressed
[ 79.112684][ T26] audit: type=1400 audit(1567861655.568:35): avc: denied { map } for pid=10670 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 '10.128.0.45' (ECDSA) to the list of known hosts.
[ 361.641618][ T26] audit: type=1400 audit(1567861938.098:36): avc: denied { map } for pid=10682 comm="syz-executor229" path="/root/syz-executor229239362" 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
[ 361.670857][T10683] IPVS: ftp: loaded support on port[0] = 21
[ 361.722312][T10683] chnl_net:caif_netlink_parms(): no params data found
[ 361.745398][T10683] bridge0: port 1(bridge_slave_0) entered blocking state
[ 361.752623][T10683] bridge0: port 1(bridge_slave_0) entered disabled state
[ 361.760539][T10683] device bridge_slave_0 entered promiscuous mode
[ 361.768174][T10683] bridge0: port 2(bridge_slave_1) entered blocking state
[ 361.775335][T10683] bridge0: port 2(bridge_slave_1) entered disabled state
[ 361.783382][T10683] device bridge_slave_1 entered promiscuous mode
[ 361.797563][T10683] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 361.808700][T10683] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 361.824749][T10683] team0: Port device team_slave_0 added
[ 361.831838][T10683] team0: Port device team_slave_1 added
[ 361.879944][T10683] device hsr_slave_0 entered promiscuous mode
[ 361.948523][T10683] device hsr_slave_1 entered promiscuous mode
[ 362.004025][T10683] bridge0: port 2(bridge_slave_1) entered blocking state
[ 362.011140][T10683] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 362.018549][T10683] bridge0: port 1(bridge_slave_0) entered blocking state
[ 362.025601][T10683] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 362.051330][T10683] 8021q: adding VLAN 0 to HW filter on device bond0
[ 362.061790][T10685] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 362.081950][T10685] bridge0: port 1(bridge_slave_0) entered disabled state
[ 362.089709][T10685] bridge0: port 2(bridge_slave_1) entered disabled state
[ 362.097395][T10685] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 362.107809][T10683] 8021q: adding VLAN 0 to HW filter on device team0
[ 362.117222][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 362.125684][ T3516] bridge0: port 1(bridge_slave_0) entered blocking state
[ 362.132760][ T3516] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 362.142737][T10685] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 362.151354][T10685] bridge0: port 2(bridge_slave_1) entered blocking state
[ 362.158430][T10685] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 362.173166][T10686] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 362.181930][T10686] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 362.192031][T10685] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 362.205048][T10683] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
[ 362.216243][T10683] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[ 362.228106][T10686] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 362.236441][T10686] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 362.244871][T10686] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
executing program
[ 362.259223][T10683] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 467.418005][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU
[ 467.424706][ C0] rcu: 0-...!: (1 GPs behind) idle=cc2/0/0x3 softirq=11261/11263 fqs=7
[ 467.433170][ C0] (t=10501 jiffies g=11009 q=54)
[ 467.438185][ C0] rcu: rcu_preempt kthread starved for 10488 jiffies! g11009 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
[ 467.449620][ C0] rcu: RCU grace-period kthread stack dump:
[ 467.455501][ C0] rcu_preempt I29520 10 2 0x80004000
[ 467.461863][ C0] Call Trace:
[ 467.465249][ C0] __schedule+0x755/0x1580
[ 467.469665][ C0] ? __sched_text_start+0x8/0x8
[ 467.475468][ C0] schedule+0xd9/0x260
[ 467.479531][ C0] schedule_timeout+0x486/0xc50
[ 467.484378][ C0] ? rwlock_bug.part.0+0x90/0x90
[ 467.489348][ C0] ? usleep_range+0x170/0x170
[ 467.494113][ C0] ? trace_hardirqs_on+0x67/0x240
[ 467.499161][ C0] ? __kasan_check_read+0x11/0x20
[ 467.504177][ C0] ? __next_timer_interrupt+0x1a0/0x1a0
[ 467.509747][ C0] ? swake_up_one+0x60/0x60
[ 467.514254][ C0] rcu_gp_kthread+0x9b2/0x18c0
[ 467.519007][ C0] ? rcu_barrier+0x310/0x310
[ 467.523623][ C0] ? trace_hardirqs_on+0x67/0x240
[ 467.528735][ C0] ? __kasan_check_read+0x11/0x20
[ 467.533765][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 467.540001][ C0] ? __kthread_parkme+0x108/0x1c0
[ 467.545019][ C0] ? __kasan_check_read+0x11/0x20
[ 467.550049][ C0] kthread+0x361/0x430
[ 467.554147][ C0] ? rcu_barrier+0x310/0x310
[ 467.558766][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 467.565298][ C0] ret_from_fork+0x24/0x30
[ 467.569742][ C0] NMI backtrace for cpu 0
[ 467.574068][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc7+ #0
[ 467.581167][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 467.591336][ C0] Call Trace:
[ 467.594783][ C0]
[ 467.597714][ C0] dump_stack+0x172/0x1f0
[ 467.602047][ C0] nmi_cpu_backtrace.cold+0x70/0xb2
[ 467.607249][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 467.613493][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45
[ 467.619416][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b
[ 467.625428][ C0] arch_trigger_cpumask_backtrace+0x14/0x20
[ 467.631448][ C0] rcu_dump_cpu_stacks+0x183/0x1cf
[ 467.636550][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13
[ 467.642087][ C0] ? raise_softirq+0x138/0x340
[ 467.646865][ C0] update_process_times+0x32/0x80
[ 467.651928][ C0] tick_sched_handle+0xa2/0x190
[ 467.656769][ C0] tick_sched_timer+0x53/0x140
[ 467.661522][ C0] __hrtimer_run_queues+0x364/0xe40
[ 467.666709][ C0] ? tick_sched_do_timer+0x1b0/0x1b0
[ 467.671985][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0
[ 467.677555][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 467.683263][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440
[ 467.689326][ C0] hrtimer_interrupt+0x314/0x770
[ 467.694309][ C0] smp_apic_timer_interrupt+0x160/0x610
[ 467.699845][ C0] apic_timer_interrupt+0xf/0x20
[ 467.704772][ C0] RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x11/0x20
[ 467.711658][ C0] Code: bf 06 00 00 00 48 89 e5 48 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
[ 467.731251][ C0] RSP: 0018:ffff8880ae809028 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[ 467.739704][ C0] RAX: 0000000000000001 RBX: ffff88809d80b0b8 RCX: ffffffff85c65b39
[ 467.747665][ C0] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000001
[ 467.755777][ C0] RBP: ffff8880ae809028 R08: ffffffff88c7a1c0 R09: 0000000000000000
[ 467.763748][ C0] R10: fffffbfff134afaf R11: ffffffff88c7a1c0 R12: dffffc0000000000
[ 467.771713][ C0] R13: ffff88809d80adc0 R14: 0000000000000001 R15: 0000000000000000
[ 467.779749][ C0] ? apic_timer_interrupt+0xa/0x20
[ 467.784909][ C0] ? hhf_dequeue+0xb9/0xa20
[ 467.789406][ C0] hhf_dequeue+0x5d1/0xa20
[ 467.793865][ C0] __qdisc_run+0x1e7/0x19d0
[ 467.798388][ C0] ? dev_queue_xmit+0x18/0x20
[ 467.803056][ C0] __dev_queue_xmit+0x16f1/0x3650
[ 467.808075][ C0] ? __local_bh_enable_ip+0x15a/0x270
[ 467.813483][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 467.818918][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[ 467.826176][ C0] ? br_nf_post_routing+0xd73/0x1d30
[ 467.831587][ C0] ? br_forward_finish+0x235/0x400
[ 467.836697][ C0] ? __kasan_check_read+0x11/0x20
[ 467.841718][ C0] ? __dev_queue_xmit+0x2b15/0x3650
[ 467.846907][ C0] dev_queue_xmit+0x18/0x20
[ 467.851492][ C0] ? dev_queue_xmit+0x18/0x20
[ 467.857023][ C0] br_dev_queue_push_xmit+0x3f3/0x5c0
[ 467.865136][ C0] ? nf_hook_slow+0xf0/0x1e0
[ 467.869843][ C0] br_forward_finish+0xfa/0x400
[ 467.875470][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 467.881159][ C0] ? br_fdb_add.cold+0x8c/0x8c
[ 467.886148][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 467.892001][ C0] ? nf_hook_slow+0xf0/0x1e0
[ 467.896948][ C0] __br_forward+0x641/0xb00
[ 467.902004][ C0] ? br_forward_finish+0x400/0x400
[ 467.907107][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0
[ 467.912679][ C0] deliver_clone+0x61/0xc0
[ 467.917436][ C0] maybe_deliver+0x2c7/0x390
[ 467.922017][ C0] br_flood+0x13a/0x3d0
[ 467.927510][ C0] br_dev_xmit+0x98c/0x15a0
[ 467.932121][ C0] ? br_poll_controller+0x10/0x10
[ 467.937233][ C0] ? netif_skb_features+0x6c2/0xb90
[ 467.942589][ C0] ? netdev_set_sb_channel+0xe0/0xe0
[ 467.947873][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 467.954349][ C0] ? validate_xmit_xfrm+0x43c/0xf10
[ 467.959928][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 467.966247][ C0] dev_hard_start_xmit+0x1a3/0x9c0
[ 467.971351][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 467.977580][ C0] __dev_queue_xmit+0x2b15/0x3650
[ 467.982631][ C0] ? __nf_conntrack_find_get+0xa97/0x13a0
[ 467.988342][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0
[ 467.993704][ C0] ? __ip_finish_output+0x5fc/0xb90
[ 467.999770][ C0] ? __kasan_check_read+0x11/0x20
[ 468.004815][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 468.011132][ C0] ? lock_downgrade+0x920/0x920
[ 468.016147][ C0] ? lock_acquire+0x190/0x410
[ 468.021288][ C0] ? __ip_finish_output+0x5fc/0xb90
[ 468.026737][ C0] dev_queue_xmit+0x18/0x20
[ 468.031433][ C0] ? dev_queue_xmit+0x18/0x20
[ 468.036099][ C0] ip_finish_output2+0x1726/0x2570
[ 468.041380][ C0] ? nf_ct_deliver_cached_events+0x23d/0x6e0
[ 468.047522][ C0] ? ip_frag_next+0x910/0x910
[ 468.052370][ C0] ? __kasan_check_read+0x11/0x20
[ 468.057516][ C0] __ip_finish_output+0x5fc/0xb90
[ 468.062573][ C0] ? __ip_finish_output+0x5fc/0xb90
[ 468.068032][ C0] ? audit_alloc_mark+0x430/0x500
[ 468.092387][ C0] ip_finish_output+0x38/0x1f0
[ 468.098285][ C0] ip_output+0x21f/0x640
[ 468.102836][ C0] ? ip_mc_output+0xf40/0xf40
[ 468.107529][ C0] ? __ip_finish_output+0xb90/0xb90
[ 468.112721][ C0] ? __kasan_check_read+0x11/0x20
[ 468.117911][ C0] ip_local_out+0xbb/0x190
[ 468.123115][ C0] igmpv3_sendpack+0x1b5/0x2c0
[ 468.127869][ C0] igmp_ifc_timer_expire+0x687/0xa00
[ 468.133845][ C0] ? call_timer_fn+0xe0/0x780
[ 468.138647][ C0] call_timer_fn+0x1ac/0x780
[ 468.143237][ C0] ? __ip_mc_dec_group+0x520/0x520
[ 468.148345][ C0] ? msleep_interruptible+0x150/0x150
[ 468.154989][ C0] ? trace_hardirqs_on+0x67/0x240
[ 468.160184][ C0] ? __kasan_check_read+0x11/0x20
[ 468.165731][ C0] ? __ip_mc_dec_group+0x520/0x520
[ 468.170869][ C0] ? __ip_mc_dec_group+0x520/0x520
[ 468.176092][ C0] run_timer_softirq+0x697/0x17a0
[ 468.181474][ C0] ? add_timer+0x930/0x930
[ 468.185876][ C0] ? kvm_clock_read+0x18/0x30
[ 468.190542][ C0] ? kvm_sched_clock_read+0x9/0x20
[ 468.195950][ C0] ? sched_clock+0x2e/0x50
[ 468.200493][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 468.205538][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 468.212001][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 468.219292][ C0] __do_softirq+0x262/0x98c
[ 468.224035][ C0] ? sched_clock_cpu+0x1b/0x1b0
[ 468.228980][ C0] irq_exit+0x19b/0x1e0
[ 468.233286][ C0] smp_apic_timer_interrupt+0x1a3/0x610
[ 468.239070][ C0] apic_timer_interrupt+0xf/0x20
[ 468.244035][ C0]
[ 468.247011][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 468.252391][ 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
[ 468.275191][ C0] RSP: 0018:ffffffff88c07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 468.283807][ C0] RAX: 1ffffffff11a5e8d RBX: ffffffff88c7a1c0 RCX: 1ffffffff134b5ee
[ 468.292485][ C0] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c
[ 468.300831][ C0] RBP: ffffffff88c07d18 R08: ffffffff88c7a1c0 R09: fffffbfff118f439
[ 468.309202][ C0] R10: fffffbfff118f438 R11: ffffffff88c7a1c7 R12: dffffc0000000000
[ 468.317188][ C0] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000000
[ 468.325919][ C0] ? trace_hardirqs_on+0x5e/0x240
[ 468.330980][ C0] ? default_idle+0x1c/0x360
[ 468.336914][ C0] ? default_idle+0x4e/0x360
[ 468.341493][ C0] arch_cpu_idle+0xa/0x10
[ 468.345924][ C0] default_idle_call+0x84/0xb0
[ 468.350832][ C0] do_idle+0x413/0x760
[ 468.354903][ C0] ? arch_cpu_idle_exit+0x80/0x80
[ 468.360114][ C0] ? trace_hardirqs_on+0x67/0x240
[ 468.365123][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 468.371408][ C0] ? debug_smp_processor_id+0x3c/0x214
[ 468.376887][ C0] cpu_startup_entry+0x1b/0x20
[ 468.381651][ C0] rest_init+0x245/0x37b
[ 468.385972][ C0] arch_call_rest_init+0xe/0x1b
[ 468.391119][ C0] start_kernel+0x912/0x951
[ 468.395622][ C0] ? mem_encrypt_init+0xb/0xb
[ 468.400388][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 468.406722][ C0] ? x86_family+0x41/0x50
[ 468.411121][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 468.417474][ C0] x86_64_start_reservations+0x29/0x2b
[ 468.422915][ C0] x86_64_start_kernel+0x77/0x7b
[ 468.427835][ C0] secondary_startup_64+0xa4/0xb0