[ 65.173397][ T26] audit: type=1800 audit(1567889274.638:27): pid=9871 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 65.194195][ T26] audit: type=1800 audit(1567889274.648:28): pid=9871 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. [ 65.948950][ T26] audit: type=1800 audit(1567889275.478:29): pid=9871 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 65.974655][ T26] audit: type=1800 audit(1567889275.488:30): pid=9871 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.52' (ECDSA) to the list of known hosts. syzkaller login: [ 193.368525][T10028] IPVS: ftp: loaded support on port[0] = 21 [ 193.410464][T10028] chnl_net:caif_netlink_parms(): no params data found [ 193.431852][T10028] bridge0: port 1(bridge_slave_0) entered blocking state [ 193.439045][T10028] bridge0: port 1(bridge_slave_0) entered disabled state [ 193.446771][T10028] device bridge_slave_0 entered promiscuous mode [ 193.454201][T10028] bridge0: port 2(bridge_slave_1) entered blocking state [ 193.461325][T10028] bridge0: port 2(bridge_slave_1) entered disabled state [ 193.468828][T10028] device bridge_slave_1 entered promiscuous mode [ 193.483009][T10028] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 193.493253][T10028] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 193.508622][T10028] team0: Port device team_slave_0 added [ 193.516098][T10028] team0: Port device team_slave_1 added [ 193.581084][T10028] device hsr_slave_0 entered promiscuous mode [ 193.639700][T10028] device hsr_slave_1 entered promiscuous mode [ 193.724596][T10028] bridge0: port 2(bridge_slave_1) entered blocking state [ 193.731707][T10028] bridge0: port 2(bridge_slave_1) entered forwarding state [ 193.738983][T10028] bridge0: port 1(bridge_slave_0) entered blocking state [ 193.746068][T10028] bridge0: port 1(bridge_slave_0) entered forwarding state [ 193.770523][T10028] 8021q: adding VLAN 0 to HW filter on device bond0 [ 193.781591][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 193.791106][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 193.798575][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 193.806406][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 193.815933][T10028] 8021q: adding VLAN 0 to HW filter on device team0 [ 193.825036][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 193.833472][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 193.840516][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 193.849983][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 193.858240][ T3516] bridge0: port 2(bridge_slave_1) entered blocking state [ 193.865311][ T3516] bridge0: port 2(bridge_slave_1) entered forwarding state [ 193.878249][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 193.887357][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 193.897341][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 193.907996][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 193.919787][T10028] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 193.931205][T10028] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 193.938811][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 193.953917][T10028] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program executing program executing program executing program executing program executing program executing program executing program [ 299.009406][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 299.016081][ C1] rcu: 1-...!: (10499 ticks this GP) idle=c62/1/0x4000000000000004 softirq=9770/9774 fqs=18 [ 299.026376][ C1] (t=10500 jiffies g=9733 q=219) [ 299.031379][ C1] rcu: rcu_preempt kthread starved for 10464 jiffies! g9733 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 299.042624][ C1] rcu: RCU grace-period kthread stack dump: [ 299.048494][ C1] rcu_preempt I29688 10 2 0x80004000 [ 299.054805][ C1] Call Trace: [ 299.058179][ C1] __schedule+0x755/0x1580 [ 299.062579][ C1] ? __sched_text_start+0x8/0x8 [ 299.067421][ C1] schedule+0xd9/0x260 [ 299.071482][ C1] schedule_timeout+0x486/0xc50 [ 299.076310][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 299.081225][ C1] ? usleep_range+0x170/0x170 [ 299.085878][ C1] ? trace_hardirqs_on+0x67/0x240 [ 299.090881][ C1] ? __kasan_check_read+0x11/0x20 [ 299.095889][ C1] ? __next_timer_interrupt+0x1a0/0x1a0 [ 299.101411][ C1] ? swake_up_one+0x60/0x60 [ 299.105903][ C1] rcu_gp_kthread+0x9b2/0x18c0 [ 299.110644][ C1] ? rcu_barrier+0x310/0x310 [ 299.115214][ C1] ? trace_hardirqs_on+0x67/0x240 [ 299.120214][ C1] ? __kasan_check_read+0x11/0x20 [ 299.125218][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 299.131447][ C1] ? __kthread_parkme+0x108/0x1c0 [ 299.136446][ C1] ? __kasan_check_read+0x11/0x20 [ 299.141450][ C1] kthread+0x361/0x430 [ 299.145498][ C1] ? rcu_barrier+0x310/0x310 [ 299.150190][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 299.156408][ C1] ret_from_fork+0x24/0x30 [ 299.160839][ C1] NMI backtrace for cpu 1 [ 299.165151][ C1] CPU: 1 PID: 10056 Comm: syz-executor535 Not tainted 5.3.0-rc7+ #0 [ 299.173115][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 299.183232][ C1] Call Trace: [ 299.186495][ C1] [ 299.189337][ C1] dump_stack+0x172/0x1f0 [ 299.193654][ C1] nmi_cpu_backtrace.cold+0x70/0xb2 [ 299.198832][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 299.205061][ C1] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 299.210669][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 299.216626][ C1] arch_trigger_cpumask_backtrace+0x14/0x20 [ 299.222509][ C1] rcu_dump_cpu_stacks+0x183/0x1cf [ 299.227599][ C1] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 299.233121][ C1] ? raise_softirq+0x138/0x340 [ 299.237864][ C1] update_process_times+0x32/0x80 [ 299.242870][ C1] tick_sched_handle+0xa2/0x190 [ 299.247697][ C1] tick_sched_timer+0x53/0x140 [ 299.252438][ C1] __hrtimer_run_queues+0x364/0xe40 [ 299.257704][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 299.262968][ C1] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 299.268493][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 299.274195][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 299.280243][ C1] hrtimer_interrupt+0x314/0x770 [ 299.289391][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 299.294938][ C1] apic_timer_interrupt+0xf/0x20 [ 299.299937][ C1] RIP: 0010:hhf_dequeue+0xab/0xa20 [ 299.305044][ C1] Code: 42 80 3c 20 00 0f 85 6d 07 00 00 49 8b 1e 48 8d 7b 10 48 89 f8 48 c1 e8 03 42 0f b6 04 20 84 c0 74 08 3c 03 0f 8e 69 07 00 00 <44> 8b 7b 10 31 ff 44 89 fe e8 27 2b ac fb 45 85 ff 0f 8e 70 04 00 [ 299.324639][ C1] RSP: 0018:ffff8880ae909038 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 299.333034][ C1] RAX: 0000000000000000 RBX: ffff88809abeebf8 RCX: ffffffff85c65169 [ 299.341000][ C1] RDX: 0000000000000100 RSI: ffffffff85c64b6a RDI: ffff88809abeec08 [ 299.348948][ C1] RBP: ffff8880ae909088 R08: ffff88808fe54680 R09: 0000000000000000 [ 299.356898][ C1] R10: fffffbfff134af9f R11: ffff88808fe54680 R12: dffffc0000000000 [ 299.364861][ C1] R13: ffff88809abee900 R14: ffff88809abeec90 R15: ffff88809abeec90 [ 299.372827][ C1] ? apic_timer_interrupt+0xa/0x20 [ 299.377933][ C1] ? hhf_dequeue+0x679/0xa20 [ 299.382873][ C1] ? hhf_dequeue+0x7a/0xa20 [ 299.387360][ C1] ? hhf_dequeue+0x7a/0xa20 [ 299.391925][ C1] __qdisc_run+0x1e5/0x1a00 [ 299.397115][ C1] ? dev_queue_xmit+0x18/0x20 [ 299.401775][ C1] __dev_queue_xmit+0x16f1/0x3650 [ 299.406781][ C1] ? __local_bh_enable_ip+0x15a/0x270 [ 299.412573][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 299.418540][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 299.425083][ C1] ? br_nf_post_routing+0xd73/0x1d30 [ 299.430406][ C1] ? br_forward_finish+0x235/0x400 [ 299.435509][ C1] ? __kasan_check_read+0x11/0x20 [ 299.440532][ C1] ? __dev_queue_xmit+0x2b15/0x3650 [ 299.445714][ C1] dev_queue_xmit+0x18/0x20 [ 299.450200][ C1] ? dev_queue_xmit+0x18/0x20 [ 299.454866][ C1] br_dev_queue_push_xmit+0x3f3/0x5c0 [ 299.460602][ C1] ? nf_hook_slow+0xf0/0x1e0 [ 299.465259][ C1] br_forward_finish+0xfa/0x400 [ 299.470099][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 299.475632][ C1] ? br_fdb_add.cold+0x8c/0x8c [ 299.480379][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 299.486082][ C1] ? nf_hook_slow+0xf0/0x1e0 [ 299.490830][ C1] __br_forward+0x641/0xb00 [ 299.495314][ C1] ? br_forward_finish+0x400/0x400 [ 299.500403][ C1] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 299.505936][ C1] deliver_clone+0x61/0xc0 [ 299.510335][ C1] maybe_deliver+0x2c7/0x390 [ 299.514993][ C1] br_flood+0x13a/0x3d0 [ 299.519214][ C1] br_dev_xmit+0x98c/0x15a0 [ 299.523698][ C1] ? br_poll_controller+0x10/0x10 [ 299.528703][ C1] ? netif_skb_features+0x6c2/0xb90 [ 299.533908][ C1] ? netdev_set_sb_channel+0xe0/0xe0 [ 299.539175][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 299.545415][ C1] ? validate_xmit_xfrm+0x43c/0xf10 [ 299.550602][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 299.556821][ C1] dev_hard_start_xmit+0x1a3/0x9c0 [ 299.561923][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 299.568149][ C1] __dev_queue_xmit+0x2b15/0x3650 [ 299.573193][ C1] ? __nf_conntrack_find_get+0xa97/0x13a0 [ 299.578897][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 299.584210][ C1] ? __ip_finish_output+0x5fc/0xb90 [ 299.589411][ C1] ? __kasan_check_read+0x11/0x20 [ 299.594427][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 299.601094][ C1] ? __nf_ct_refresh_acct+0x93/0x2d0 [ 299.607671][ C1] ? lock_downgrade+0x920/0x920 [ 299.612535][ C1] ? lock_acquire+0x190/0x410 [ 299.617207][ C1] ? __ip_finish_output+0x5fc/0xb90 [ 299.622395][ C1] dev_queue_xmit+0x18/0x20 [ 299.626882][ C1] ? dev_queue_xmit+0x18/0x20 [ 299.631551][ C1] ip_finish_output2+0x1726/0x2570 [ 299.636644][ C1] ? nf_ct_deliver_cached_events+0x23d/0x6e0 [ 299.642617][ C1] ? ip_frag_next+0x910/0x910 [ 299.647274][ C1] ? __kasan_check_read+0x11/0x20 [ 299.652278][ C1] __ip_finish_output+0x5fc/0xb90 [ 299.657457][ C1] ? __ip_finish_output+0x5fc/0xb90 [ 299.662635][ C1] ? audit_alloc_mark+0x3d0/0x500 [ 299.667636][ C1] ip_finish_output+0x38/0x1f0 [ 299.672386][ C1] ip_output+0x21f/0x640 [ 299.676619][ C1] ? ip_mc_output+0xf40/0xf40 [ 299.681276][ C1] ? __ip_finish_output+0xb90/0xb90 [ 299.686452][ C1] ? __kasan_check_read+0x11/0x20 [ 299.691454][ C1] ip_local_out+0xbb/0x190 [ 299.695914][ C1] igmpv3_sendpack+0x1b5/0x2c0 [ 299.700675][ C1] igmp_ifc_timer_expire+0x687/0xa00 [ 299.705953][ C1] ? call_timer_fn+0xe0/0x780 [ 299.710611][ C1] call_timer_fn+0x1ac/0x780 [ 299.715203][ C1] ? __ip_mc_dec_group+0x520/0x520 [ 299.720294][ C1] ? msleep_interruptible+0x150/0x150 [ 299.725647][ C1] ? trace_hardirqs_on+0x67/0x240 [ 299.730647][ C1] ? __kasan_check_read+0x11/0x20 [ 299.735647][ C1] ? __ip_mc_dec_group+0x520/0x520 [ 299.740862][ C1] ? __ip_mc_dec_group+0x520/0x520 [ 299.745963][ C1] run_timer_softirq+0x697/0x17a0 [ 299.750976][ C1] ? add_timer+0x930/0x930 [ 299.755387][ C1] ? kvm_clock_read+0x18/0x30 [ 299.760046][ C1] ? kvm_sched_clock_read+0x9/0x20 [ 299.765149][ C1] ? sched_clock+0x2e/0x50 [ 299.769547][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 299.774999][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 299.781218][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 299.788701][ C1] __do_softirq+0x262/0x98c [ 299.793197][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 299.798037][ C1] irq_exit+0x19b/0x1e0 [ 299.802177][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 299.807725][ C1] apic_timer_interrupt+0xf/0x20 [ 299.812642][ C1] [ 299.815566][ C1] RIP: 0010:release_pages+0x54a/0x1a50 [ 299.821013][ C1] Code: 89 45 98 e8 68 16 e0 ff 8b 9d 68 ff ff ff 41 83 c4 01 44 89 e6 89 df e8 54 17 e0 ff 44 39 e3 0f 84 12 08 00 00 e8 46 16 e0 ff <48> 8b 85 70 ff ff ff 48 c1 e8 03 42 80 3c 38 00 0f 85 96 10 00 00 [ 299.840604][ C1] RSP: 0018:ffff88808dc37a48 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 299.848996][ C1] RAX: ffff88808fe54680 RBX: 000000000000009f RCX: ffffffff81925efc [ 299.857205][ C1] RDX: 0000000000000000 RSI: ffffffff81925f0a RDI: 0000000000000004 [ 299.865152][ C1] RBP: ffff88808dc37b28 R08: ffff88808fe54680 R09: fffff9400047f449 [ 299.873103][ C1] R10: fffff9400047f448 R11: ffffea00023fa247 R12: 000000000000009e [ 299.881163][ C1] R13: 0000000000000001 R14: ffffea00023fa240 R15: dffffc0000000000 [ 299.889130][ C1] ? release_pages+0x53c/0x1a50 [ 299.893963][ C1] ? release_pages+0x54a/0x1a50 [ 299.898792][ C1] ? release_pages+0x54a/0x1a50 [ 299.903623][ C1] ? lru_deactivate_file_fn+0x1b30/0x1b30 [ 299.909320][ C1] ? find_next_bit+0x107/0x130 [ 299.914067][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 299.920289][ C1] ? lru_add_drain_cpu+0x1c4/0x520 [ 299.925380][ C1] free_pages_and_swap_cache+0x2c3/0x3f0 [ 299.930995][ C1] tlb_flush_mmu+0x89/0x630 [ 299.935474][ C1] tlb_finish_mmu+0x98/0x3b0 [ 299.940041][ C1] exit_mmap+0x2da/0x530 [ 299.944259][ C1] ? __ia32_sys_munmap+0x80/0x80 [ 299.949191][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 299.955418][ C1] ? __khugepaged_exit+0xcf/0x410 [ 299.960425][ C1] mmput+0x179/0x4d0 [ 299.964302][ C1] do_exit+0x84e/0x2e50 [ 299.968436][ C1] ? mm_update_next_owner+0x640/0x640 [ 299.973795][ C1] ? down_read_non_owner+0x450/0x450 [ 299.979059][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 299.985279][ C1] ? handle_mm_fault+0x1d3/0x6b0 [ 299.990198][ C1] do_group_exit+0x135/0x360 [ 299.994767][ C1] __x64_sys_exit_group+0x44/0x50 [ 299.999776][ C1] do_syscall_64+0xfd/0x6a0 [ 300.004263][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 300.010142][ C1] RIP: 0033:0x441008 [ 300.014031][ C1] Code: Bad RIP value. [ 300.018073][ C1] RSP: 002b:00007ffc10718e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 300.026460][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441008 [ 300.034412][ C1] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 300.042365][ C1] RBP: 00000000004c6f30 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 300.050312][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 300.058261][ C1] R13: 00000000006d95e0 R14: 0000000000000000 R15: 0000000000000000