[ 56.848392][ T26] audit: type=1800 audit(1568199877.119:25): pid=8160 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 56.887079][ T26] audit: type=1800 audit(1568199877.119:26): pid=8160 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 56.926103][ T26] audit: type=1800 audit(1568199877.119:27): pid=8160 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 56.946584][ T26] audit: type=1800 audit(1568199877.119:28): pid=8160 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.49' (ECDSA) to the list of known hosts. syzkaller login: [ 334.403430][ T8316] IPVS: ftp: loaded support on port[0] = 21 [ 334.462087][ T8316] chnl_net:caif_netlink_parms(): no params data found [ 334.489557][ T8316] bridge0: port 1(bridge_slave_0) entered blocking state [ 334.496899][ T8316] bridge0: port 1(bridge_slave_0) entered disabled state [ 334.504693][ T8316] device bridge_slave_0 entered promiscuous mode [ 334.512373][ T8316] bridge0: port 2(bridge_slave_1) entered blocking state [ 334.519502][ T8316] bridge0: port 2(bridge_slave_1) entered disabled state [ 334.527072][ T8316] device bridge_slave_1 entered promiscuous mode [ 334.542152][ T8316] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 334.552558][ T8316] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 334.571198][ T8316] team0: Port device team_slave_0 added [ 334.578116][ T8316] team0: Port device team_slave_1 added [ 334.629144][ T8316] device hsr_slave_0 entered promiscuous mode [ 334.667369][ T8316] device hsr_slave_1 entered promiscuous mode [ 334.743979][ T8316] bridge0: port 2(bridge_slave_1) entered blocking state [ 334.751204][ T8316] bridge0: port 2(bridge_slave_1) entered forwarding state [ 334.758870][ T8316] bridge0: port 1(bridge_slave_0) entered blocking state [ 334.766071][ T8316] bridge0: port 1(bridge_slave_0) entered forwarding state [ 334.796653][ T8316] 8021q: adding VLAN 0 to HW filter on device bond0 [ 334.809708][ T8318] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 334.829326][ T8318] bridge0: port 1(bridge_slave_0) entered disabled state [ 334.837552][ T8318] bridge0: port 2(bridge_slave_1) entered disabled state [ 334.845164][ T8318] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 334.856926][ T8316] 8021q: adding VLAN 0 to HW filter on device team0 [ 334.866665][ T2902] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 334.875205][ T2902] bridge0: port 1(bridge_slave_0) entered blocking state [ 334.882268][ T2902] bridge0: port 1(bridge_slave_0) entered forwarding state [ 334.897859][ T8318] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 334.906296][ T8318] bridge0: port 2(bridge_slave_1) entered blocking state [ 334.913352][ T8318] bridge0: port 2(bridge_slave_1) entered forwarding state [ 334.923342][ T2902] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 334.932361][ T2902] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 334.946604][ T8316] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 334.958066][ T8316] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 334.970534][ T8318] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 334.979614][ T8318] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 334.988623][ T8318] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 334.996761][ T8318] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 335.014330][ T8316] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 440.136961][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 440.143800][ C1] rcu: 1-...!: (10500 ticks this GP) idle=622/0/0x3 softirq=9422/9422 fqs=0 [ 440.152850][ C1] (t=10500 jiffies g=6281 q=20) [ 440.157764][ C1] rcu: rcu_preempt kthread starved for 10500 jiffies! g6281 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 440.169003][ C1] rcu: RCU grace-period kthread stack dump: [ 440.174868][ C1] rcu_preempt I29032 10 2 0x80004000 [ 440.181201][ C1] Call Trace: [ 440.184518][ C1] __schedule+0x76e/0x17a0 [ 440.188913][ C1] ? __sched_text_start+0x8/0x8 [ 440.193742][ C1] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 440.199526][ C1] ? schedule_timeout+0x47c/0xc50 [ 440.204526][ C1] ? lockdep_hardirqs_on+0x418/0x5d0 [ 440.209788][ C1] schedule+0xd9/0x260 [ 440.213843][ C1] schedule_timeout+0x486/0xc50 [ 440.218674][ C1] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 440.224480][ C1] ? usleep_range+0x170/0x170 [ 440.229129][ C1] ? trace_hardirqs_on+0x67/0x240 [ 440.234128][ C1] ? __kasan_check_read+0x11/0x20 [ 440.239132][ C1] ? __next_timer_interrupt+0x1a0/0x1a0 [ 440.244673][ C1] ? swake_up_one+0x60/0x60 [ 440.249159][ C1] rcu_gp_kthread+0x9b2/0x18d0 [ 440.253914][ C1] ? invoke_rcu_core+0x230/0x230 [ 440.258839][ C1] ? trace_hardirqs_on+0x67/0x240 [ 440.263833][ C1] ? __kasan_check_read+0x11/0x20 [ 440.268849][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 440.275079][ C1] ? __kthread_parkme+0x108/0x1c0 [ 440.280080][ C1] ? __kasan_check_read+0x11/0x20 [ 440.285090][ C1] kthread+0x361/0x430 [ 440.289151][ C1] ? invoke_rcu_core+0x230/0x230 [ 440.294063][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 440.300288][ C1] ret_from_fork+0x24/0x30 [ 440.304715][ C1] NMI backtrace for cpu 1 [ 440.309021][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0-rc6-next-20190830 #75 [ 440.317313][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 440.327336][ C1] Call Trace: [ 440.330593][ C1] [ 440.333480][ C1] dump_stack+0x172/0x1f0 [ 440.337790][ C1] nmi_cpu_backtrace.cold+0x70/0xb2 [ 440.342963][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 440.349178][ C1] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 440.354785][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 440.360741][ C1] arch_trigger_cpumask_backtrace+0x14/0x20 [ 440.366614][ C1] rcu_dump_cpu_stacks+0x183/0x1cf [ 440.371707][ C1] rcu_sched_clock_irq.cold+0x4fd/0xc12 [ 440.377230][ C1] ? raise_softirq+0x138/0x340 [ 440.381979][ C1] update_process_times+0x2d/0x70 [ 440.386978][ C1] tick_sched_handle+0xa2/0x190 [ 440.391803][ C1] tick_sched_timer+0x53/0x140 [ 440.396545][ C1] __hrtimer_run_queues+0x364/0xe40 [ 440.401722][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 440.406988][ C1] ? hrtimer_sleeper_start_expires+0x90/0x90 [ 440.412948][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 440.418644][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 440.424689][ C1] hrtimer_interrupt+0x314/0x770 [ 440.429611][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 440.435134][ C1] apic_timer_interrupt+0xf/0x20 [ 440.440075][ C1] RIP: 0010:hhf_dequeue+0x630/0xa20 [ 440.445256][ 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 d2 e6 a6 fb 4d 8d b5 98 03 00 00 4c [ 440.464834][ C1] RSP: 0018:ffff8880ae908f28 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 440.473222][ C1] RAX: 1ffff1101422a35f RBX: ffff8880a1151af8 RCX: ffffffff85cb6ed1 [ 440.481185][ C1] RDX: 1ffff1101422a372 RSI: ffffffff85cb6edb RDI: ffff8880a1151b98 [ 440.489134][ C1] RBP: ffff8880ae908f78 R08: ffff8880a98d0340 R09: fffffbfff14ed341 [ 440.497087][ C1] R10: ffff8880a98d0cf8 R11: ffff8880a98d0340 R12: dffffc0000000000 [ 440.505037][ C1] R13: ffff8880a1151800 R14: ffff8880a1151b90 R15: ffff8880a1151b90 [ 440.513000][ C1] ? apic_timer_interrupt+0xa/0x20 [ 440.518182][ C1] ? hhf_dequeue+0x5d1/0xa20 [ 440.522757][ C1] ? hhf_dequeue+0x5db/0xa20 [ 440.527324][ C1] ? hhf_dequeue+0x5db/0xa20 [ 440.531942][ C1] __qdisc_run+0x1e7/0x19d0 [ 440.536432][ C1] ? dev_queue_xmit+0x18/0x20 [ 440.541091][ C1] __dev_queue_xmit+0x16f1/0x37c0 [ 440.546095][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 440.552232][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 440.557512][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 440.563760][ C1] ? br_nf_post_routing+0xd73/0x1d30 [ 440.569063][ C1] ? br_forward_finish+0x235/0x400 [ 440.574150][ C1] ? find_held_lock+0x35/0x130 [ 440.578900][ C1] ? br_forward_finish+0x235/0x400 [ 440.583993][ C1] dev_queue_xmit+0x18/0x20 [ 440.588469][ C1] ? dev_queue_xmit+0x18/0x20 [ 440.593124][ C1] br_dev_queue_push_xmit+0x3f3/0x5e0 [ 440.598470][ C1] ? __kasan_check_read+0x11/0x20 [ 440.603485][ C1] br_forward_finish+0xfa/0x400 [ 440.608311][ C1] ? br_dev_queue_push_xmit+0x5e0/0x5e0 [ 440.613836][ C1] ? br_fdb_add.cold+0x83/0x83 [ 440.618581][ C1] ? __kasan_check_read+0x11/0x20 [ 440.623674][ C1] __br_forward+0x641/0xb00 [ 440.628154][ C1] ? br_forward_finish+0x400/0x400 [ 440.633245][ C1] ? br_dev_queue_push_xmit+0x5e0/0x5e0 [ 440.638770][ C1] deliver_clone+0x61/0xc0 [ 440.643166][ C1] maybe_deliver+0x2c7/0x390 [ 440.647734][ C1] br_flood+0x13a/0x3d0 [ 440.651872][ C1] br_dev_xmit+0x98c/0x15a0 [ 440.656352][ C1] ? br_poll_controller+0x10/0x10 [ 440.661353][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 440.667484][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 440.673003][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 440.678957][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 440.685273][ C1] dev_hard_start_xmit+0x1a3/0x9c0 [ 440.690363][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 440.696582][ C1] __dev_queue_xmit+0x2b82/0x37c0 [ 440.701583][ C1] ? __kasan_check_read+0x11/0x20 [ 440.706579][ C1] ? __lock_acquire+0x16f2/0x4a00 [ 440.711694][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 440.716961][ C1] ? __kasan_check_read+0x11/0x20 [ 440.721961][ C1] ? mark_lock+0xc2/0x1220 [ 440.726358][ C1] ? mark_held_locks+0xa4/0xf0 [ 440.731173][ C1] ? ip6_finish_output2+0xc40/0x2550 [ 440.736563][ C1] ? __ip6_finish_output+0x444/0xaa0 [ 440.741821][ C1] ? ip6_finish_output2+0xc40/0x2550 [ 440.747086][ C1] dev_queue_xmit+0x18/0x20 [ 440.751591][ C1] ? dev_queue_xmit+0x18/0x20 [ 440.756242][ C1] ip6_finish_output2+0xf58/0x2550 [ 440.761336][ C1] ? ip6_forward_finish+0x570/0x570 [ 440.766513][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 440.772728][ C1] ? __kasan_check_read+0x11/0x20 [ 440.777734][ C1] __ip6_finish_output+0x444/0xaa0 [ 440.782820][ C1] ? __ip6_finish_output+0x444/0xaa0 [ 440.788084][ C1] ip6_finish_output+0x38/0x1f0 [ 440.792908][ C1] ip6_output+0x235/0x7f0 [ 440.797214][ C1] ? ip6_finish_output+0x1f0/0x1f0 [ 440.802298][ C1] ? __ip6_finish_output+0xaa0/0xaa0 [ 440.807592][ C1] ? icmp6_dst_alloc+0x432/0x660 [ 440.812506][ C1] mld_sendpack+0x9c7/0xed0 [ 440.816991][ C1] ? nf_hook.constprop.0+0x560/0x560 [ 440.822257][ C1] ? mld_ifc_timer_expire+0x437/0x8a0 [ 440.827607][ C1] ? __local_bh_enable_ip+0x15a/0x270 [ 440.832960][ C1] mld_ifc_timer_expire+0x449/0x8a0 [ 440.838130][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 440.843659][ C1] call_timer_fn+0x1ac/0x780 [ 440.848226][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 440.853589][ C1] ? msleep_interruptible+0x150/0x150 [ 440.858933][ C1] ? run_timer_softirq+0x6ae/0x17f0 [ 440.864108][ C1] ? trace_hardirqs_on+0x67/0x240 [ 440.869116][ C1] ? __kasan_check_read+0x11/0x20 [ 440.874118][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 440.879464][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 440.884808][ C1] run_timer_softirq+0x6c0/0x17f0 [ 440.889843][ C1] ? add_timer+0x930/0x930 [ 440.894236][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 440.900366][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 440.905895][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 440.911851][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 440.918078][ C1] __do_softirq+0x262/0x98c [ 440.922552][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 440.927392][ C1] irq_exit+0x19b/0x1e0 [ 440.931523][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 440.937049][ C1] apic_timer_interrupt+0xf/0x20 [ 440.941970][ C1] [ 440.944925][ C1] RIP: 0010:native_safe_halt+0xe/0x10 [ 440.950277][ C1] Code: 38 c1 69 fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 64 b8 64 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 54 b8 64 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 5e a7 1c fa e8 69 [ 440.969869][ C1] RSP: 0018:ffff8880a98dfcd0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 440.978254][ C1] RAX: 1ffffffff11e5db7 RBX: 0000000000000000 RCX: 0000000000000000 [ 440.986198][ C1] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffff8880a98d0bdc [ 440.994229][ C1] RBP: ffff8880a98dfd00 R08: ffff8880a98d0340 R09: 0000000000000000 [ 441.002187][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 441.010134][ C1] R13: 0000000000000000 R14: 0000000000000060 R15: 0000000000000001 [ 441.018098][ C1] ? default_idle+0x4e/0x360 [ 441.022748][ C1] default_enter_idle+0x71/0xf0 [ 441.027577][ C1] cpuidle_enter_state+0xef/0xfb0 [ 441.032577][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 441.038801][ C1] cpuidle_enter+0x4f/0xa0 [ 441.043201][ C1] do_idle+0x45f/0x6e0 [ 441.047247][ C1] ? arch_cpu_idle_exit+0x80/0x80 [ 441.052269][ C1] cpu_startup_entry+0x1b/0x20 [ 441.057020][ C1] start_secondary+0x2f4/0x410 [ 441.061770][ C1] ? set_cpu_sibling_map+0x2180/0x2180 [ 441.067213][ C1] secondary_startup_64+0xa4/0xb0