[ 68.883796][ T26] audit: type=1800 audit(1568290519.207:30): pid=10240 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 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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 171.198748][ T26] kauditd_printk_skb: 5 callbacks suppressed [ 171.198761][ T26] audit: type=1400 audit(1568290621.557:36): avc: denied { map } for pid=10426 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.166' (ECDSA) to the list of known hosts. [ 293.749758][ T26] audit: type=1400 audit(1568290744.107:37): avc: denied { map } for pid=10433 comm="syz-executor513" path="/root/syz-executor513019675" 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 [ 293.778946][T10434] IPVS: ftp: loaded support on port[0] = 21 [ 293.825455][T10434] chnl_net:caif_netlink_parms(): no params data found [ 293.848506][T10434] bridge0: port 1(bridge_slave_0) entered blocking state [ 293.855649][T10434] bridge0: port 1(bridge_slave_0) entered disabled state [ 293.863074][T10434] device bridge_slave_0 entered promiscuous mode [ 293.870404][T10434] bridge0: port 2(bridge_slave_1) entered blocking state [ 293.877632][T10434] bridge0: port 2(bridge_slave_1) entered disabled state [ 293.885075][T10434] device bridge_slave_1 entered promiscuous mode [ 293.899255][T10434] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 293.909480][T10434] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 293.924803][T10434] team0: Port device team_slave_0 added [ 293.931745][T10434] team0: Port device team_slave_1 added [ 293.987463][T10434] device hsr_slave_0 entered promiscuous mode [ 294.025891][T10434] device hsr_slave_1 entered promiscuous mode [ 294.071264][T10434] bridge0: port 2(bridge_slave_1) entered blocking state [ 294.078356][T10434] bridge0: port 2(bridge_slave_1) entered forwarding state [ 294.085752][T10434] bridge0: port 1(bridge_slave_0) entered blocking state [ 294.092797][T10434] bridge0: port 1(bridge_slave_0) entered forwarding state [ 294.118108][T10434] 8021q: adding VLAN 0 to HW filter on device bond0 [ 294.128343][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 294.147999][ T3014] bridge0: port 1(bridge_slave_0) entered disabled state [ 294.155316][ T3014] bridge0: port 2(bridge_slave_1) entered disabled state [ 294.163210][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 294.173189][T10434] 8021q: adding VLAN 0 to HW filter on device team0 [ 294.181972][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 294.190528][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 294.197590][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 294.207364][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 294.215888][ T3014] bridge0: port 2(bridge_slave_1) entered blocking state [ 294.222921][ T3014] bridge0: port 2(bridge_slave_1) entered forwarding state [ 294.236050][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 294.244965][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 294.258144][T10434] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 294.268809][T10434] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 294.280231][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 294.288572][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 294.296828][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 294.304889][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 294.319117][T10434] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 399.455532][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 399.462200][ C1] rcu: 1-...!: (10499 ticks this GP) idle=b1a/0/0x3 softirq=11797/11797 fqs=0 [ 399.471201][ C1] (t=10501 jiffies g=10669 q=41) [ 399.476214][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g10669 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 399.487551][ C1] rcu: RCU grace-period kthread stack dump: [ 399.493423][ C1] rcu_preempt I29688 10 2 0x80004000 [ 399.499741][ C1] Call Trace: [ 399.503107][ C1] __schedule+0x755/0x1580 [ 399.507515][ C1] ? __sched_text_start+0x8/0x8 [ 399.512360][ C1] schedule+0xd9/0x260 [ 399.516415][ C1] schedule_timeout+0x486/0xc50 [ 399.521254][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 399.526181][ C1] ? usleep_range+0x170/0x170 [ 399.530841][ C1] ? trace_hardirqs_on+0x67/0x240 [ 399.535853][ C1] ? __kasan_check_read+0x11/0x20 [ 399.540867][ C1] ? __next_timer_interrupt+0x1a0/0x1a0 [ 399.546397][ C1] ? swake_up_one+0x60/0x60 [ 399.550882][ C1] ? trace_hardirqs_on+0x67/0x240 [ 399.555894][ C1] rcu_gp_kthread+0x9b2/0x18c0 [ 399.560651][ C1] ? rcu_barrier+0x310/0x310 [ 399.565226][ C1] ? trace_hardirqs_on+0x67/0x240 [ 399.570233][ C1] ? __kasan_check_read+0x11/0x20 [ 399.575248][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 399.581476][ C1] ? __kthread_parkme+0x108/0x1c0 [ 399.586660][ C1] ? __kasan_check_read+0x11/0x20 [ 399.591675][ C1] kthread+0x361/0x430 [ 399.595727][ C1] ? rcu_barrier+0x310/0x310 [ 399.600301][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 399.606615][ C1] ret_from_fork+0x24/0x30 [ 399.611040][ C1] NMI backtrace for cpu 1 [ 399.615359][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0-rc8+ #0 [ 399.622444][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 399.632478][ C1] Call Trace: [ 399.635746][ C1] [ 399.638642][ C1] dump_stack+0x172/0x1f0 [ 399.642961][ C1] nmi_cpu_backtrace.cold+0x70/0xb2 [ 399.648146][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 399.654373][ C1] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 399.659990][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 399.665998][ C1] arch_trigger_cpumask_backtrace+0x14/0x20 [ 399.671876][ C1] rcu_dump_cpu_stacks+0x183/0x1cf [ 399.676986][ C1] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 399.682517][ C1] ? raise_softirq+0x138/0x340 [ 399.687269][ C1] update_process_times+0x32/0x80 [ 399.692283][ C1] tick_sched_handle+0xa2/0x190 [ 399.697129][ C1] tick_sched_timer+0x53/0x140 [ 399.701880][ C1] __hrtimer_run_queues+0x364/0xe40 [ 399.707066][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 399.712338][ C1] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 399.717872][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 399.723573][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 399.729628][ C1] hrtimer_interrupt+0x314/0x770 [ 399.734612][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 399.740145][ C1] apic_timer_interrupt+0xf/0x20 [ 399.745092][ C1] RIP: 0010:native_queued_spin_lock_slowpath+0x132/0x9f0 [ 399.752119][ C1] Code: 00 00 00 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 37 07 00 00 48 81 c4 98 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 f3 90 73 ff ff ff 8b 45 98 4c 8d 65 d8 3d 00 01 00 00 0f 84 e5 00 00 [ 399.771708][ C1] RSP: 0018:ffff8880ae909530 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 399.780118][ C1] RAX: 0000000000000000 RBX: ffff8880a47492e8 RCX: ffffffff81595bd7 [ 399.788084][ C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880a47492e8 [ 399.796049][ C1] RBP: ffff8880ae9095f0 R08: 1ffff110148e925d R09: ffffed10148e925e [ 399.804967][ C1] R10: ffffed10148e925d R11: ffff8880a47492eb R12: 0000000000000001 [ 399.812926][ C1] R13: 0000000000000003 R14: ffffed10148e925d R15: 0000000000000001 [ 399.820898][ C1] ? apic_timer_interrupt+0xa/0x20 [ 399.826001][ C1] ? native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 399.832318][ C1] ? debug_object_active_state+0x28a/0x350 [ 399.838108][ C1] ? __pv_queued_spin_lock_slowpath+0xd10/0xd10 [ 399.844328][ C1] ? debug_object_deactivate+0x320/0x320 [ 399.849952][ C1] ? mark_held_locks+0xf0/0xf0 [ 399.854706][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 399.860942][ C1] do_raw_spin_lock+0x20e/0x2e0 [ 399.865784][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 399.870710][ C1] ? lock_acquire+0x190/0x410 [ 399.875439][ C1] ? __dev_queue_xmit+0x14b8/0x3650 [ 399.880634][ C1] _raw_spin_lock+0x37/0x40 [ 399.885123][ C1] ? __dev_queue_xmit+0x14b8/0x3650 [ 399.890309][ C1] __dev_queue_xmit+0x14b8/0x3650 [ 399.895324][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 399.900644][ C1] ? __ip6_finish_output+0x444/0xa50 [ 399.905940][ C1] ? ipv6_chk_mcast_addr+0x315/0x6f0 [ 399.911211][ C1] ? lock_downgrade+0x920/0x920 [ 399.916051][ C1] ? lock_acquire+0x190/0x410 [ 399.920716][ C1] ? __ip6_finish_output+0x444/0xa50 [ 399.925993][ C1] dev_queue_xmit+0x18/0x20 [ 399.930483][ C1] ? dev_queue_xmit+0x18/0x20 [ 399.935150][ C1] ip6_finish_output2+0xf58/0x2520 [ 399.940255][ C1] ? ip6_forward_finish+0x530/0x530 [ 399.945476][ C1] ? ip6_mtu+0x16f/0x460 [ 399.949724][ C1] __ip6_finish_output+0x444/0xa50 [ 399.954828][ C1] ? __ip6_finish_output+0x444/0xa50 [ 399.960113][ C1] ip6_finish_output+0x38/0x1f0 [ 399.964966][ C1] ip6_output+0x235/0x7c0 [ 399.969298][ C1] ? ip6_finish_output+0x1f0/0x1f0 [ 399.974401][ C1] ? __ip6_finish_output+0xa50/0xa50 [ 399.979682][ C1] ? icmp6_dst_alloc+0x432/0x660 [ 399.984614][ C1] mld_sendpack+0x9c7/0xea0 [ 399.989111][ C1] ? nf_hook.constprop.0+0x560/0x560 [ 399.994391][ C1] ? mld_ifc_timer_expire+0x437/0x8a0 [ 399.999751][ C1] ? __local_bh_enable_ip+0x15a/0x270 [ 400.005110][ C1] mld_ifc_timer_expire+0x449/0x8a0 [ 400.010299][ C1] call_timer_fn+0x1ac/0x780 [ 400.014875][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 400.020236][ C1] ? msleep_interruptible+0x150/0x150 [ 400.025597][ C1] ? trace_hardirqs_on+0x67/0x240 [ 400.030606][ C1] ? __kasan_check_read+0x11/0x20 [ 400.035618][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 400.040978][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 400.046335][ C1] run_timer_softirq+0x697/0x17a0 [ 400.051348][ C1] ? add_timer+0x930/0x930 [ 400.055748][ C1] ? kvm_clock_read+0x18/0x30 [ 400.060411][ C1] ? kvm_sched_clock_read+0x9/0x20 [ 400.065504][ C1] ? sched_clock+0x2e/0x50 [ 400.069906][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 400.074749][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 400.080984][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 400.087212][ C1] __do_softirq+0x262/0x98c [ 400.091699][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 400.096542][ C1] irq_exit+0x19b/0x1e0 [ 400.100687][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 400.106219][ C1] apic_timer_interrupt+0xf/0x20 [ 400.111136][ C1] [ 400.114067][ C1] RIP: 0010:native_safe_halt+0xe/0x10 [ 400.119425][ 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 [ 400.139012][ C1] RSP: 0018:ffff8880a98e7d68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 400.147410][ C1] RAX: 1ffffffff11a5e8d RBX: ffff8880a98d6340 RCX: 1ffffffff134b5ee [ 400.155369][ C1] RDX: dffffc0000000000 RSI: ffffffff8177f14e RDI: ffffffff873e050c [ 400.163326][ C1] RBP: ffff8880a98e7d98 R08: ffff8880a98d6340 R09: ffffed101531ac69 [ 400.171280][ C1] R10: ffffed101531ac68 R11: ffff8880a98d6347 R12: dffffc0000000000 [ 400.179236][ C1] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000001 [ 400.187219][ C1] ? trace_hardirqs_on+0x5e/0x240 [ 400.192232][ C1] ? default_idle+0x1c/0x360 [ 400.196811][ C1] ? default_idle+0x4e/0x360 [ 400.201389][ C1] arch_cpu_idle+0xa/0x10 [ 400.205710][ C1] default_idle_call+0x84/0xb0 [ 400.210461][ C1] do_idle+0x413/0x760 [ 400.214519][ C1] ? arch_cpu_idle_exit+0x80/0x80 [ 400.219529][ C1] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 400.225319][ C1] ? complete+0x61/0x80 [ 400.229476][ C1] cpu_startup_entry+0x1b/0x20 [ 400.234226][ C1] start_secondary+0x315/0x430 [ 400.238976][ C1] ? set_cpu_sibling_map+0x2180/0x2180 [ 400.244432][ C1] secondary_startup_64+0xa4/0xb0