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. [ 67.583621][ T26] audit: type=1800 audit(1568201343.997:33): pid=10001 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=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 71.615596][ T26] kauditd_printk_skb: 1 callbacks suppressed [ 71.615607][ T26] audit: type=1400 audit(1568201348.027:35): avc: denied { map } for pid=10179 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 '10.128.10.40' (ECDSA) to the list of known hosts. [ 133.307552][ T26] audit: type=1400 audit(1568201409.717:36): avc: denied { map } for pid=10191 comm="syz-executor314" path="/root/syz-executor314067170" 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 [ 133.342792][T10192] IPVS: ftp: loaded support on port[0] = 21 [ 133.384394][T10192] chnl_net:caif_netlink_parms(): no params data found [ 133.406325][T10192] bridge0: port 1(bridge_slave_0) entered blocking state [ 133.413612][T10192] bridge0: port 1(bridge_slave_0) entered disabled state [ 133.421104][T10192] device bridge_slave_0 entered promiscuous mode [ 133.428167][T10192] bridge0: port 2(bridge_slave_1) entered blocking state [ 133.435284][T10192] bridge0: port 2(bridge_slave_1) entered disabled state [ 133.442719][T10192] device bridge_slave_1 entered promiscuous mode [ 133.455949][T10192] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 133.466333][T10192] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 133.482013][T10192] team0: Port device team_slave_0 added [ 133.488978][T10192] team0: Port device team_slave_1 added [ 133.551375][T10192] device hsr_slave_0 entered promiscuous mode [ 133.599910][T10192] device hsr_slave_1 entered promiscuous mode [ 133.644788][T10192] bridge0: port 2(bridge_slave_1) entered blocking state [ 133.651832][T10192] bridge0: port 2(bridge_slave_1) entered forwarding state [ 133.659073][T10192] bridge0: port 1(bridge_slave_0) entered blocking state [ 133.666129][T10192] bridge0: port 1(bridge_slave_0) entered forwarding state [ 133.690549][T10192] 8021q: adding VLAN 0 to HW filter on device bond0 [ 133.702043][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 133.710287][ T3516] bridge0: port 1(bridge_slave_0) entered disabled state [ 133.717741][ T3516] bridge0: port 2(bridge_slave_1) entered disabled state [ 133.725550][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 133.735673][T10192] 8021q: adding VLAN 0 to HW filter on device team0 [ 133.744733][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 133.753093][ T3008] bridge0: port 1(bridge_slave_0) entered blocking state [ 133.760270][ T3008] bridge0: port 1(bridge_slave_0) entered forwarding state [ 133.769342][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 133.777809][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 133.784865][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 133.802841][T10192] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 133.813298][T10192] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 133.825207][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 133.833500][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 133.841752][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 133.850067][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 133.858166][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 133.866147][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 133.880172][T10192] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 238.919748][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 238.926371][ C1] rcu: 1-...!: (10500 ticks this GP) idle=d26/0/0x3 softirq=10516/10516 fqs=0 [ 238.935389][ C1] (t=10500 jiffies g=9965 q=191) [ 238.940396][ C1] rcu: rcu_preempt kthread starved for 10500 jiffies! g9965 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 238.952073][ C1] rcu: RCU grace-period kthread stack dump: [ 238.957937][ C1] rcu_preempt I29520 10 2 0x80004000 [ 238.964258][ C1] Call Trace: [ 238.967752][ C1] __schedule+0x755/0x1580 [ 238.972162][ C1] ? __sched_text_start+0x8/0x8 [ 238.976990][ C1] schedule+0xd9/0x260 [ 238.981033][ C1] schedule_timeout+0x486/0xc50 [ 238.985913][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 238.990828][ C1] ? usleep_range+0x170/0x170 [ 238.995506][ C1] ? trace_hardirqs_on+0x67/0x240 [ 239.000564][ C1] ? __kasan_check_read+0x11/0x20 [ 239.005605][ C1] ? __next_timer_interrupt+0x1a0/0x1a0 [ 239.011153][ C1] ? swake_up_one+0x60/0x60 [ 239.015629][ C1] ? trace_hardirqs_on+0x67/0x240 [ 239.020759][ C1] rcu_gp_kthread+0x9b2/0x18c0 [ 239.025749][ C1] ? rcu_barrier+0x310/0x310 [ 239.030311][ C1] ? trace_hardirqs_on+0x67/0x240 [ 239.035310][ C1] ? __kasan_check_read+0x11/0x20 [ 239.040347][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 239.046592][ C1] ? __kthread_parkme+0x108/0x1c0 [ 239.051589][ C1] ? __kasan_check_read+0x11/0x20 [ 239.056590][ C1] kthread+0x361/0x430 [ 239.060631][ C1] ? rcu_barrier+0x310/0x310 [ 239.065213][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 239.071428][ C1] ret_from_fork+0x24/0x30 [ 239.075931][ C1] NMI backtrace for cpu 1 [ 239.080273][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0-rc8+ #0 [ 239.087355][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 239.097385][ C1] Call Trace: [ 239.100642][ C1] [ 239.103504][ C1] dump_stack+0x172/0x1f0 [ 239.107814][ C1] nmi_cpu_backtrace.cold+0x70/0xb2 [ 239.112989][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 239.119246][ C1] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 239.124852][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 239.130810][ C1] arch_trigger_cpumask_backtrace+0x14/0x20 [ 239.136675][ C1] rcu_dump_cpu_stacks+0x183/0x1cf [ 239.141780][ C1] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 239.147335][ C1] ? raise_softirq+0x138/0x340 [ 239.152078][ C1] update_process_times+0x32/0x80 [ 239.157109][ C1] tick_sched_handle+0xa2/0x190 [ 239.161938][ C1] tick_sched_timer+0x53/0x140 [ 239.166678][ C1] __hrtimer_run_queues+0x364/0xe40 [ 239.171854][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 239.177116][ C1] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 239.182637][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 239.188332][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 239.194388][ C1] hrtimer_interrupt+0x314/0x770 [ 239.199338][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 239.204871][ C1] apic_timer_interrupt+0xf/0x20 [ 239.209825][ C1] RIP: 0010:hhf_dequeue+0x630/0xa20 [ 239.215018][ C1] Code: 49 8d 7f 08 4c 8b 73 08 48 89 fa 48 c1 ea 03 42 80 3c 22 00 0f 85 ac 03 00 00 4c 89 f2 4d 89 77 08 48 c1 ea 03 42 80 3c 22 00 <0f> 85 89 03 00 00 4d 89 3e e8 32 14 ac fb 4d 8d b5 98 03 00 00 4c [ 239.234678][ C1] RSP: 0018:ffff8880ae9095c8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 239.243055][ C1] RAX: 1ffff11011cfbe0f RBX: ffff88808e7df078 RCX: ffffffff85c66051 [ 239.251001][ C1] RDX: 1ffff11011cfbe22 RSI: ffffffff85c6605b RDI: ffff88808e7df118 [ 239.258945][ C1] RBP: ffff8880ae909618 R08: ffff8880a98d6340 R09: 0000000000000000 [ 239.266892][ C1] R10: fffffbfff134afaf R11: ffff8880a98d6340 R12: dffffc0000000000 [ 239.274838][ C1] R13: ffff88808e7ded80 R14: ffff88808e7df110 R15: ffff88808e7df110 [ 239.282790][ C1] ? apic_timer_interrupt+0xa/0x20 [ 239.287987][ C1] ? hhf_dequeue+0x5d1/0xa20 [ 239.292555][ C1] ? hhf_dequeue+0x5db/0xa20 [ 239.297117][ C1] ? hhf_dequeue+0x5db/0xa20 [ 239.301714][ C1] __qdisc_run+0x1e7/0x19d0 [ 239.306230][ C1] ? dev_queue_xmit+0x18/0x20 [ 239.310884][ C1] __dev_queue_xmit+0x16f1/0x3650 [ 239.315883][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 239.321182][ C1] ? __ip6_finish_output+0x444/0xa50 [ 239.326464][ C1] ? ipv6_chk_mcast_addr+0x315/0x6f0 [ 239.331722][ C1] ? lock_downgrade+0x920/0x920 [ 239.336546][ C1] ? lock_acquire+0x190/0x410 [ 239.341193][ C1] ? __ip6_finish_output+0x444/0xa50 [ 239.346453][ C1] dev_queue_xmit+0x18/0x20 [ 239.350926][ C1] ? dev_queue_xmit+0x18/0x20 [ 239.355571][ C1] ip6_finish_output2+0xf58/0x2520 [ 239.360656][ C1] ? ip6_forward_finish+0x530/0x530 [ 239.365852][ C1] ? ip6_mtu+0x16f/0x460 [ 239.370076][ C1] __ip6_finish_output+0x444/0xa50 [ 239.375158][ C1] ? __ip6_finish_output+0x444/0xa50 [ 239.380430][ C1] ip6_finish_output+0x38/0x1f0 [ 239.385464][ C1] ip6_output+0x235/0x7c0 [ 239.389769][ C1] ? ip6_finish_output+0x1f0/0x1f0 [ 239.394855][ C1] ? __ip6_finish_output+0xa50/0xa50 [ 239.400113][ C1] ? icmp6_dst_alloc+0x432/0x660 [ 239.405025][ C1] mld_sendpack+0x9c7/0xea0 [ 239.409505][ C1] ? nf_hook.constprop.0+0x560/0x560 [ 239.414768][ C1] ? mld_ifc_timer_expire+0x437/0x8a0 [ 239.420115][ C1] ? __local_bh_enable_ip+0x15a/0x270 [ 239.425472][ C1] mld_ifc_timer_expire+0x449/0x8a0 [ 239.430649][ C1] call_timer_fn+0x1ac/0x780 [ 239.435220][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 239.440563][ C1] ? msleep_interruptible+0x150/0x150 [ 239.445908][ C1] ? trace_hardirqs_on+0x67/0x240 [ 239.450908][ C1] ? __kasan_check_read+0x11/0x20 [ 239.455903][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 239.461259][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 239.466607][ C1] run_timer_softirq+0x697/0x17a0 [ 239.471610][ C1] ? add_timer+0x930/0x930 [ 239.476037][ C1] ? kvm_clock_read+0x18/0x30 [ 239.480688][ C1] ? kvm_sched_clock_read+0x9/0x20 [ 239.485805][ C1] ? sched_clock+0x2e/0x50 [ 239.490219][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 239.495055][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 239.501270][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 239.507484][ C1] __do_softirq+0x262/0x98c [ 239.511962][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 239.516791][ C1] irq_exit+0x19b/0x1e0 [ 239.520925][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 239.526447][ C1] apic_timer_interrupt+0xf/0x20 [ 239.531355][ C1] [ 239.534273][ C1] RIP: 0010:native_safe_halt+0xe/0x10 [ 239.539621][ C1] 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 [ 239.559209][ C1] RSP: 0018:ffff8880a98e7d68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 239.567594][ C1] RAX: 1ffffffff11a5e8d RBX: ffff8880a98d6340 RCX: 1ffffffff134b5ee [ 239.575542][ C1] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c [ 239.583486][ C1] RBP: ffff8880a98e7d98 R08: ffff8880a98d6340 R09: ffffed101531ac69 [ 239.591433][ C1] R10: ffffed101531ac68 R11: ffff8880a98d6347 R12: dffffc0000000000 [ 239.599377][ C1] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000001 [ 239.607338][ C1] ? trace_hardirqs_on+0x5e/0x240 [ 239.612338][ C1] ? default_idle+0x1c/0x360 [ 239.616905][ C1] ? default_idle+0x4e/0x360 [ 239.621558][ C1] arch_cpu_idle+0xa/0x10 [ 239.625880][ C1] default_idle_call+0x84/0xb0 [ 239.630629][ C1] do_idle+0x413/0x760 [ 239.634674][ C1] ? arch_cpu_idle_exit+0x80/0x80 [ 239.639676][ C1] cpu_startup_entry+0x1b/0x20 [ 239.644415][ C1] start_secondary+0x315/0x430 [ 239.649155][ C1] ? set_cpu_sibling_map+0x2180/0x2180 [ 239.654651][ C1] secondary_startup_64+0xa4/0xb0