[ 75.856296][ T26] audit: type=1800 audit(1565010462.565:27): pid=10109 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 75.877038][ T26] audit: type=1800 audit(1565010462.575:28): pid=10109 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 76.535071][ T26] audit: type=1800 audit(1565010463.265:29): pid=10109 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 [ 76.558414][ T26] audit: type=1800 audit(1565010463.265:30): pid=10109 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 '10.128.0.98' (ECDSA) to the list of known hosts. syzkaller login: [ 182.142558][T10266] IPVS: ftp: loaded support on port[0] = 21 [ 182.187877][T10266] chnl_net:caif_netlink_parms(): no params data found [ 182.210613][T10266] bridge0: port 1(bridge_slave_0) entered blocking state [ 182.219624][T10266] bridge0: port 1(bridge_slave_0) entered disabled state [ 182.228158][T10266] device bridge_slave_0 entered promiscuous mode [ 182.236410][T10266] bridge0: port 2(bridge_slave_1) entered blocking state [ 182.245223][T10266] bridge0: port 2(bridge_slave_1) entered disabled state [ 182.253707][T10266] device bridge_slave_1 entered promiscuous mode [ 182.268864][T10266] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 182.279703][T10266] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 182.297076][T10266] team0: Port device team_slave_0 added [ 182.304241][T10266] team0: Port device team_slave_1 added [ 182.352739][T10266] device hsr_slave_0 entered promiscuous mode [ 182.391212][T10266] device hsr_slave_1 entered promiscuous mode [ 182.436410][T10266] bridge0: port 2(bridge_slave_1) entered blocking state [ 182.444187][T10266] bridge0: port 2(bridge_slave_1) entered forwarding state [ 182.452310][T10266] bridge0: port 1(bridge_slave_0) entered blocking state [ 182.459761][T10266] bridge0: port 1(bridge_slave_0) entered forwarding state [ 182.486650][T10266] 8021q: adding VLAN 0 to HW filter on device bond0 [ 182.498340][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 182.518737][ T2987] bridge0: port 1(bridge_slave_0) entered disabled state [ 182.528116][ T2987] bridge0: port 2(bridge_slave_1) entered disabled state [ 182.536950][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 182.548053][T10266] 8021q: adding VLAN 0 to HW filter on device team0 [ 182.559044][ T2395] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 182.567763][ T2395] bridge0: port 1(bridge_slave_0) entered blocking state [ 182.576188][ T2395] bridge0: port 1(bridge_slave_0) entered forwarding state [ 182.587338][T10268] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 182.596953][T10268] bridge0: port 2(bridge_slave_1) entered blocking state [ 182.604465][T10268] bridge0: port 2(bridge_slave_1) entered forwarding state [ 182.622613][ T2395] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 182.631957][ T2395] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 182.645696][T10266] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 182.657710][T10266] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 182.670691][ T2395] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 182.679163][ T2395] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 182.687942][ T2395] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 182.698166][ T2395] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 182.714410][T10266] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 182.749034][ C1] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [ 287.920961][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 287.927671][ C0] rcu: 0-...!: (1 GPs behind) idle=572/1/0x4000000000000002 softirq=11187/11188 fqs=2 [ 287.937375][ C0] (t=10501 jiffies g=11225 q=6) [ 287.942310][ C0] rcu: rcu_preempt kthread starved for 10498 jiffies! g11225 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 287.953657][ C0] rcu: RCU grace-period kthread stack dump: [ 287.959542][ C0] rcu_preempt I29120 10 2 0x80004000 [ 287.965874][ C0] Call Trace: [ 287.969221][ C0] __schedule+0x755/0x15b0 [ 287.973639][ C0] ? __sched_text_start+0x8/0x8 [ 287.978490][ C0] schedule+0xa8/0x270 [ 287.982551][ C0] schedule_timeout+0x486/0xc50 [ 287.987401][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 287.992331][ C0] ? usleep_range+0x170/0x170 [ 287.997011][ C0] ? trace_hardirqs_on+0x67/0x240 [ 288.002028][ C0] ? __kasan_check_read+0x11/0x20 [ 288.007049][ C0] ? __next_timer_interrupt+0x1a0/0x1a0 [ 288.012589][ C0] ? swake_up_one+0x60/0x60 [ 288.017084][ C0] rcu_gp_kthread+0x9b2/0x18c0 [ 288.021939][ C0] ? rcu_barrier+0x310/0x310 [ 288.026521][ C0] ? trace_hardirqs_on+0x67/0x240 [ 288.031538][ C0] ? __kasan_check_read+0x11/0x20 [ 288.036561][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 288.042825][ C0] ? __kthread_parkme+0x108/0x1c0 [ 288.047930][ C0] ? __kasan_check_read+0x11/0x20 [ 288.052947][ C0] kthread+0x361/0x430 [ 288.057009][ C0] ? rcu_barrier+0x310/0x310 [ 288.061589][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 288.067823][ C0] ret_from_fork+0x24/0x30 [ 288.072279][ C0] NMI backtrace for cpu 0 [ 288.076610][ C0] CPU: 0 PID: 10266 Comm: syz-executor113 Not tainted 5.3.0-rc2-next-20190805 #59 [ 288.085803][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 288.095851][ C0] Call Trace: [ 288.099140][ C0] [ 288.101996][ C0] dump_stack+0x172/0x1f0 [ 288.106321][ C0] nmi_cpu_backtrace.cold+0x70/0xb2 [ 288.111519][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 288.117779][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 288.123404][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 288.129379][ C0] arch_trigger_cpumask_backtrace+0x14/0x20 [ 288.135265][ C0] rcu_dump_cpu_stacks+0x183/0x1cf [ 288.140396][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 288.145931][ C0] ? raise_softirq+0x138/0x340 [ 288.150697][ C0] update_process_times+0x32/0x80 [ 288.155727][ C0] tick_sched_handle+0xa2/0x190 [ 288.160572][ C0] tick_sched_timer+0x53/0x140 [ 288.165332][ C0] __hrtimer_run_queues+0x364/0xe40 [ 288.170519][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 288.175800][ C0] ? hrtimer_sleeper_start_expires+0x90/0x90 [ 288.181767][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 288.187481][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 288.193637][ C0] hrtimer_interrupt+0x314/0x770 [ 288.198577][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 288.204116][ C0] apic_timer_interrupt+0xf/0x20 [ 288.209050][ C0] RIP: 0010:check_memory_region+0x115/0x1a0 [ 288.215008][ C0] Code: 38 00 74 ee 4b 8d 44 25 00 4d 85 c0 75 31 49 89 d9 49 29 c1 e9 68 ff ff ff 5b b8 01 00 00 00 41 5c 41 5d 5d c3 4d 85 c9 74 ef <4d> 01 e1 eb 09 48 83 c0 01 4c 39 c8 74 e1 80 38 00 74 f2 eb 8c 4d [ 288.234606][ C0] RSP: 0018:ffff8880ae8091d8 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 288.243009][ C0] RAX: ffffed1015058da1 RBX: ffffed1015058da2 RCX: ffffffff8158f457 [ 288.250971][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880a82c6d08 [ 288.258932][ C0] RBP: ffff8880ae8091f0 R08: 1ffff11015058da1 R09: 0000000000000001 [ 288.266896][ C0] R10: ffffed1015058da1 R11: ffff8880a82c6d0b R12: ffffed1015058da1 [ 288.274884][ C0] R13: 0000000000000003 R14: ffffed1015058da1 R15: 0000000000000001 [ 288.282868][ C0] ? apic_timer_interrupt+0xa/0x20 [ 288.287981][ C0] ? native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 288.294309][ C0] __kasan_check_read+0x11/0x20 [ 288.299153][ C0] native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 288.305305][ C0] ? __pv_queued_spin_lock_slowpath+0xd10/0xd10 [ 288.311539][ C0] ? mark_held_locks+0xf0/0xf0 [ 288.316298][ C0] do_raw_spin_lock+0x20e/0x2e0 [ 288.321139][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 288.326064][ C0] ? lock_acquire+0x190/0x410 [ 288.330734][ C0] ? release_sock+0x20/0x1c0 [ 288.335318][ C0] ? __kasan_check_read+0x11/0x20 [ 288.340356][ C0] _raw_spin_lock_bh+0x3b/0x50 [ 288.345129][ C0] ? release_sock+0x20/0x1c0 [ 288.349732][ C0] release_sock+0x20/0x1c0 [ 288.354161][ C0] wait_on_pending_writer+0x20f/0x420 [ 288.359544][ C0] ? ip6_rcv_finish+0x1de/0x2f0 [ 288.364406][ C0] ? tls_init+0x560/0x560 [ 288.368743][ C0] ? process_backlog+0x206/0x750 [ 288.373670][ C0] ? net_rx_action+0x508/0x10c0 [ 288.378604][ C0] ? __do_softirq+0x262/0x98c [ 288.383277][ C0] ? prepare_to_wait_exclusive+0x320/0x320 [ 288.389105][ C0] ? inet_release+0xed/0x200 [ 288.393692][ C0] ? inet6_release+0x53/0x80 [ 288.398296][ C0] ? __sock_release+0xce/0x280 [ 288.403052][ C0] ? sock_close+0x1e/0x30 [ 288.407380][ C0] ? __fput+0x2ff/0x890 [ 288.411526][ C0] ? ____fput+0x16/0x20 [ 288.415671][ C0] ? task_work_run+0x145/0x1c0 [ 288.420435][ C0] ? exit_to_usermode_loop+0x316/0x380 [ 288.425891][ C0] tls_sk_proto_cleanup+0x2c5/0x3e0 [ 288.431083][ C0] ? wait_on_pending_writer+0x420/0x420 [ 288.436624][ C0] tls_sk_proto_unhash+0x90/0x3f0 [ 288.441657][ C0] tcp_set_state+0x5b9/0x7d0 [ 288.446246][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 288.452477][ C0] ? __sk_mem_reduce_allocated+0x1b0/0x560 [ 288.458277][ C0] ? tcp_alloc_md5sig_pool+0x4a0/0x4a0 [ 288.463733][ C0] ? __sk_mem_reclaim+0x55/0x70 [ 288.468574][ C0] ? tcp_write_queue_purge+0x5d8/0x1310 [ 288.474119][ C0] ? inet6_sk_rx_dst_set+0x244/0x6f0 [ 288.479482][ C0] tcp_done+0xe2/0x320 [ 288.483545][ C0] tcp_reset+0x132/0x500 [ 288.487778][ C0] tcp_validate_incoming+0xa2d/0x1660 [ 288.493148][ C0] tcp_rcv_established+0x6b5/0x1e70 [ 288.498339][ C0] ? mark_held_locks+0xf0/0xf0 [ 288.503098][ C0] ? sk_filter_trim_cap+0x45f/0xb30 [ 288.508291][ C0] ? tcp_data_queue+0x4860/0x4860 [ 288.513310][ C0] ? do_raw_spin_lock+0x12a/0x2e0 [ 288.518323][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 288.523257][ C0] ? lock_acquire+0x190/0x410 [ 288.527934][ C0] tcp_v6_do_rcv+0x41e/0x12c0 [ 288.532704][ C0] tcp_v6_rcv+0x31f1/0x3500 [ 288.537212][ C0] ? tcp_v6_syn_recv_sock+0x2290/0x2290 [ 288.542758][ C0] ? nf_confirm+0x360/0x4d0 [ 288.547256][ C0] ? mark_held_locks+0xf0/0xf0 [ 288.552017][ C0] ip6_protocol_deliver_rcu+0x2fe/0x1660 [ 288.557654][ C0] ip6_input_finish+0x84/0x170 [ 288.562417][ C0] ip6_input+0xe4/0x3f0 [ 288.566564][ C0] ? ip6_input_finish+0x170/0x170 [ 288.571578][ C0] ? __kasan_check_read+0x11/0x20 [ 288.576595][ C0] ? ip6_protocol_deliver_rcu+0x1660/0x1660 [ 288.582484][ C0] ? lock_downgrade+0x920/0x920 [ 288.587335][ C0] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 288.593571][ C0] ip6_rcv_finish+0x1de/0x2f0 [ 288.598240][ C0] ipv6_rcv+0x10e/0x420 [ 288.602394][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 288.607872][ C0] ? lock_downgrade+0x920/0x920 [ 288.612717][ C0] ? lock_downgrade+0x920/0x920 [ 288.617567][ C0] ? ip6_rcv_finish_core.isra.0+0x560/0x560 [ 288.623460][ C0] ? trace_hardirqs_off+0x62/0x240 [ 288.628566][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 288.634026][ C0] __netif_receive_skb_one_core+0x113/0x1a0 [ 288.639912][ C0] ? __netif_receive_skb_core+0x3060/0x3060 [ 288.645797][ C0] ? lock_acquire+0x190/0x410 [ 288.650466][ C0] ? process_backlog+0x195/0x750 [ 288.655396][ C0] __netif_receive_skb+0x2c/0x1d0 [ 288.660419][ C0] process_backlog+0x206/0x750 [ 288.665179][ C0] ? lock_acquire+0x190/0x410 [ 288.669852][ C0] ? clockevents_program_event+0x15a/0x370 [ 288.675650][ C0] net_rx_action+0x508/0x10c0 [ 288.680329][ C0] ? napi_complete_done+0x4b0/0x4b0 [ 288.685531][ C0] ? sched_clock+0x2e/0x50 [ 288.689941][ C0] ? kvm_clock_read+0x18/0x30 [ 288.694630][ C0] ? inet_csk_listen_stop+0x1bc/0x850 [ 288.699998][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 288.706320][ C0] __do_softirq+0x262/0x98c [ 288.710816][ C0] ? inet_csk_listen_stop+0x1bc/0x850 [ 288.716177][ C0] do_softirq_own_stack+0x2a/0x40 [ 288.721185][ C0] [ 288.724116][ C0] do_softirq.part.0+0x11a/0x170 [ 288.729047][ C0] __local_bh_enable_ip+0x211/0x270 [ 288.734238][ C0] inet_csk_listen_stop+0x1e0/0x850 [ 288.739433][ C0] tcp_close+0xd5b/0x10e0 [ 288.743767][ C0] ? ip_mc_drop_socket+0x211/0x270 [ 288.748884][ C0] ? down_write+0xdf/0x150 [ 288.753292][ C0] inet_release+0xed/0x200 [ 288.757792][ C0] inet6_release+0x53/0x80 [ 288.762203][ C0] __sock_release+0xce/0x280 [ 288.766787][ C0] sock_close+0x1e/0x30 [ 288.770939][ C0] __fput+0x2ff/0x890 [ 288.774914][ C0] ? __sock_release+0x280/0x280 [ 288.779774][ C0] ____fput+0x16/0x20 [ 288.783752][ C0] task_work_run+0x145/0x1c0 [ 288.788339][ C0] exit_to_usermode_loop+0x316/0x380 [ 288.793619][ C0] do_syscall_64+0x65f/0x760 [ 288.798201][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 288.804086][ C0] RIP: 0033:0x406571 [ 288.807978][ C0] Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 24 1a 00 00 c3 48 83 ec 08 e8 6a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 b3 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 288.827580][ C0] RSP: 002b:00007fff3001d630 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 288.837486][ C0] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000406571 [ 288.845447][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 288.853410][ C0] RBP: 00000000006dcc20 R08: 0000000000000140 R09: 0000000000000140 [ 288.861373][ C0] R10: 00007fff3001d660 R11: 0000000000000293 R12: 00007fff3001d690 [ 288.869338][ C0] R13: 00000000006dcc2c R14: 000000000000002d R15: 0000000000000007