[ 68.650065][ T27] audit: type=1800 audit(1564840670.075:27): pid=10027 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 68.696526][ T27] audit: type=1800 audit(1564840670.075:28): pid=10027 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. [ 69.220779][ T27] audit: type=1800 audit(1564840670.695:29): pid=10027 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 [ 69.241015][ T27] audit: type=1800 audit(1564840670.695:30): pid=10027 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 '10.128.0.180' (ECDSA) to the list of known hosts. syzkaller login: [ 207.677311][T10180] IPVS: ftp: loaded support on port[0] = 21 [ 207.721756][T10180] chnl_net:caif_netlink_parms(): no params data found [ 207.744176][T10180] bridge0: port 1(bridge_slave_0) entered blocking state [ 207.751299][T10180] bridge0: port 1(bridge_slave_0) entered disabled state [ 207.758795][T10180] device bridge_slave_0 entered promiscuous mode [ 207.766117][T10180] bridge0: port 2(bridge_slave_1) entered blocking state [ 207.773265][T10180] bridge0: port 2(bridge_slave_1) entered disabled state [ 207.780803][T10180] device bridge_slave_1 entered promiscuous mode [ 207.794757][T10180] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 207.805102][T10180] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 207.821379][T10180] team0: Port device team_slave_0 added [ 207.827849][T10180] team0: Port device team_slave_1 added [ 207.901675][T10180] device hsr_slave_0 entered promiscuous mode [ 207.970194][T10180] device hsr_slave_1 entered promiscuous mode [ 208.025801][T10180] bridge0: port 2(bridge_slave_1) entered blocking state [ 208.032879][T10180] bridge0: port 2(bridge_slave_1) entered forwarding state [ 208.040274][T10180] bridge0: port 1(bridge_slave_0) entered blocking state [ 208.047327][T10180] bridge0: port 1(bridge_slave_0) entered forwarding state [ 208.072638][T10180] 8021q: adding VLAN 0 to HW filter on device bond0 [ 208.083387][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 208.102753][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 208.110275][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 208.117982][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 208.128719][T10180] 8021q: adding VLAN 0 to HW filter on device team0 [ 208.137852][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 208.146298][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 208.153361][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 208.163527][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 208.172306][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 208.179328][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 208.197963][T10180] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 208.208416][T10180] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 208.221273][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 208.229654][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 208.238002][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 208.246180][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 208.254472][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 208.262125][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 208.277611][T10180] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 313.469861][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 313.476524][ C0] rcu: 0-...!: (10503 ticks this GP) idle=8de/1/0x4000000000000002 softirq=9731/9733 fqs=1 [ 313.486666][ C0] (t=10500 jiffies g=10221 q=2) [ 313.491593][ C0] rcu: rcu_preempt kthread starved for 10498 jiffies! g10221 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 313.502765][ C0] rcu: RCU grace-period kthread stack dump: [ 313.508657][ C0] rcu_preempt R running task 29528 10 2 0x80004000 [ 313.516547][ C0] Call Trace: [ 313.519845][ C0] __schedule+0x755/0x15b0 [ 313.524255][ C0] ? __sched_text_start+0x8/0x8 [ 313.529100][ C0] schedule+0xa8/0x270 [ 313.533167][ C0] schedule_timeout+0x486/0xc50 [ 313.538014][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 313.542943][ C0] ? usleep_range+0x170/0x170 [ 313.547608][ C0] ? trace_hardirqs_on+0x67/0x240 [ 313.552623][ C0] ? __kasan_check_read+0x11/0x20 [ 313.557642][ C0] ? __next_timer_interrupt+0x1a0/0x1a0 [ 313.563188][ C0] ? swake_up_one+0x60/0x60 [ 313.567686][ C0] rcu_gp_kthread+0x9b2/0x18c0 [ 313.572444][ C0] ? rcu_barrier+0x310/0x310 [ 313.577028][ C0] ? trace_hardirqs_on+0x67/0x240 [ 313.582051][ C0] ? __kasan_check_read+0x11/0x20 [ 313.587067][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 313.593296][ C0] ? __kthread_parkme+0x108/0x1c0 [ 313.598310][ C0] ? __kasan_check_read+0x11/0x20 [ 313.603330][ C0] kthread+0x361/0x430 [ 313.607386][ C0] ? rcu_barrier+0x310/0x310 [ 313.611965][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 313.618200][ C0] ret_from_fork+0x24/0x30 [ 313.622642][ C0] NMI backtrace for cpu 0 [ 313.626964][ C0] CPU: 0 PID: 10180 Comm: syz-executor370 Not tainted 5.3.0-rc2-next-20190802 #58 [ 313.636136][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 313.646178][ C0] Call Trace: [ 313.649452][ C0] [ 313.652303][ C0] dump_stack+0x172/0x1f0 [ 313.656632][ C0] nmi_cpu_backtrace.cold+0x70/0xb2 [ 313.661822][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 313.668054][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 313.673680][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 313.679661][ C0] arch_trigger_cpumask_backtrace+0x14/0x20 [ 313.685545][ C0] rcu_dump_cpu_stacks+0x183/0x1cf [ 313.690648][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 313.696182][ C0] ? raise_softirq+0x138/0x340 [ 313.700940][ C0] update_process_times+0x32/0x80 [ 313.705961][ C0] tick_sched_handle+0xa2/0x190 [ 313.710806][ C0] tick_sched_timer+0x53/0x140 [ 313.715566][ C0] __hrtimer_run_queues+0x364/0xe40 [ 313.720753][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 313.726052][ C0] ? hrtimer_sleeper_start_expires+0x90/0x90 [ 313.732021][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 313.737736][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 313.743808][ C0] hrtimer_interrupt+0x314/0x770 [ 313.748745][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 313.754287][ C0] apic_timer_interrupt+0xf/0x20 [ 313.759220][ C0] RIP: 0010:check_memory_region+0x1f/0x1a0 [ 313.765020][ C0] Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 85 f6 0f 84 34 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 55 0f b6 d2 48 39 c7 48 89 e5 41 55 <41> 54 53 0f 86 07 01 00 00 4c 8d 5c 37 ff 49 89 f8 48 b8 00 00 00 [ 313.784615][ C0] RSP: 0018:ffff8880ae8091e8 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff13 [ 313.793015][ C0] RAX: ffff7fffffffffff RBX: ffff8880a8554d48 RCX: ffffffff8158f457 [ 313.800979][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880a8554d48 [ 313.808937][ C0] RBP: ffff8880ae8091f0 R08: 1ffff110150aa9a9 R09: ffffed10150aa9aa [ 313.816914][ C0] R10: ffffed10150aa9a9 R11: ffff8880a8554d4b R12: 0000000000000001 [ 313.824875][ C0] R13: 0000000000000003 R14: ffffed10150aa9a9 R15: 0000000000000001 [ 313.832851][ C0] ? apic_timer_interrupt+0xa/0x20 [ 313.837960][ C0] ? native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 313.844283][ C0] __kasan_check_read+0x11/0x20 [ 313.849126][ C0] native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 313.855275][ C0] ? __pv_queued_spin_lock_slowpath+0xd10/0xd10 [ 313.861514][ C0] ? mark_held_locks+0xf0/0xf0 [ 313.866267][ C0] do_raw_spin_lock+0x20e/0x2e0 [ 313.871107][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 313.876036][ C0] ? lock_acquire+0x190/0x410 [ 313.880701][ C0] ? release_sock+0x20/0x1c0 [ 313.885293][ C0] ? __kasan_check_read+0x11/0x20 [ 313.890316][ C0] _raw_spin_lock_bh+0x3b/0x50 [ 313.895066][ C0] ? release_sock+0x20/0x1c0 [ 313.899645][ C0] release_sock+0x20/0x1c0 [ 313.904052][ C0] wait_on_pending_writer+0x20f/0x420 [ 313.909411][ C0] ? ip6_rcv_finish+0x1de/0x2f0 [ 313.914253][ C0] ? tls_init+0x560/0x560 [ 313.918603][ C0] ? process_backlog+0x206/0x750 [ 313.923526][ C0] ? net_rx_action+0x508/0x10c0 [ 313.928402][ C0] ? __do_softirq+0x262/0x98c [ 313.933084][ C0] ? prepare_to_wait_exclusive+0x320/0x320 [ 313.938884][ C0] ? inet_release+0xed/0x200 [ 313.943462][ C0] ? inet6_release+0x53/0x80 [ 313.948042][ C0] ? __sock_release+0xce/0x280 [ 313.952797][ C0] ? sock_close+0x1e/0x30 [ 313.957116][ C0] ? __fput+0x2ff/0x890 [ 313.961262][ C0] ? ____fput+0x16/0x20 [ 313.965408][ C0] ? task_work_run+0x145/0x1c0 [ 313.970171][ C0] ? exit_to_usermode_loop+0x316/0x380 [ 313.975625][ C0] tls_sk_proto_cleanup+0x2c5/0x3e0 [ 313.980817][ C0] ? wait_on_pending_writer+0x420/0x420 [ 313.986856][ C0] tls_sk_proto_unhash+0x90/0x3f0 [ 313.991871][ C0] tcp_set_state+0x5b9/0x7d0 [ 313.996453][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 314.002685][ C0] ? __sk_mem_reduce_allocated+0x1b0/0x560 [ 314.008477][ C0] ? tcp_alloc_md5sig_pool+0x4a0/0x4a0 [ 314.013929][ C0] ? __sk_mem_reclaim+0x55/0x70 [ 314.018767][ C0] ? tcp_write_queue_purge+0x5d8/0x1310 [ 314.024304][ C0] ? lock_downgrade+0x920/0x920 [ 314.029151][ C0] tcp_done+0xe2/0x320 [ 314.033218][ C0] tcp_reset+0x132/0x500 [ 314.037459][ C0] tcp_validate_incoming+0xa2d/0x1660 [ 314.042825][ C0] tcp_rcv_established+0x6b5/0x1e70 [ 314.048013][ C0] ? tcp_data_queue+0x4860/0x4860 [ 314.053055][ C0] tcp_v6_do_rcv+0x41e/0x12c0 [ 314.057742][ C0] tcp_v6_rcv+0x31f1/0x3500 [ 314.062249][ C0] ? tcp_v6_syn_recv_sock+0x2290/0x2290 [ 314.067824][ C0] ? nf_confirm+0x360/0x4d0 [ 314.072318][ C0] ? mark_held_locks+0xf0/0xf0 [ 314.077074][ C0] ip6_protocol_deliver_rcu+0x2fe/0x1660 [ 314.082709][ C0] ip6_input_finish+0x84/0x170 [ 314.087460][ C0] ip6_input+0xe4/0x3f0 [ 314.091616][ C0] ? ip6_input_finish+0x170/0x170 [ 314.096627][ C0] ? __kasan_check_read+0x11/0x20 [ 314.101646][ C0] ? ip6_protocol_deliver_rcu+0x1660/0x1660 [ 314.107527][ C0] ? lock_downgrade+0x920/0x920 [ 314.112383][ C0] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 314.118614][ C0] ip6_rcv_finish+0x1de/0x2f0 [ 314.123278][ C0] ipv6_rcv+0x10e/0x420 [ 314.127422][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 314.132868][ C0] ? lock_downgrade+0x920/0x920 [ 314.137708][ C0] ? lock_downgrade+0x920/0x920 [ 314.142546][ C0] ? ip6_rcv_finish_core.isra.0+0x560/0x560 [ 314.148433][ C0] ? trace_hardirqs_off+0x62/0x240 [ 314.153550][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 314.158998][ C0] __netif_receive_skb_one_core+0x113/0x1a0 [ 314.164894][ C0] ? __netif_receive_skb_core+0x3060/0x3060 [ 314.170776][ C0] ? lock_acquire+0x190/0x410 [ 314.175452][ C0] ? process_backlog+0x195/0x750 [ 314.180388][ C0] __netif_receive_skb+0x2c/0x1d0 [ 314.185435][ C0] process_backlog+0x206/0x750 [ 314.190188][ C0] ? lock_acquire+0x190/0x410 [ 314.194855][ C0] ? clockevents_program_event+0x15a/0x370 [ 314.200677][ C0] net_rx_action+0x508/0x10c0 [ 314.205345][ C0] ? napi_complete_done+0x4b0/0x4b0 [ 314.210582][ C0] ? sched_clock+0x2e/0x50 [ 314.214985][ C0] ? kvm_clock_read+0x18/0x30 [ 314.219657][ C0] ? inet_csk_listen_stop+0x1bc/0x850 [ 314.225023][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 314.231256][ C0] __do_softirq+0x262/0x98c [ 314.235761][ C0] ? inet_csk_listen_stop+0x1bc/0x850 [ 314.241125][ C0] do_softirq_own_stack+0x2a/0x40 [ 314.246150][ C0] [ 314.249090][ C0] do_softirq.part.0+0x11a/0x170 [ 314.254014][ C0] __local_bh_enable_ip+0x211/0x270 [ 314.259205][ C0] inet_csk_listen_stop+0x1e0/0x850 [ 314.264395][ C0] tcp_close+0xd5b/0x10e0 [ 314.268717][ C0] ? ip_mc_drop_socket+0x211/0x270 [ 314.273819][ C0] ? down_write+0xdf/0x150 [ 314.278227][ C0] inet_release+0xed/0x200 [ 314.282639][ C0] inet6_release+0x53/0x80 [ 314.287045][ C0] __sock_release+0xce/0x280 [ 314.291624][ C0] sock_close+0x1e/0x30 [ 314.295768][ C0] __fput+0x2ff/0x890 [ 314.299755][ C0] ? __sock_release+0x280/0x280 [ 314.304607][ C0] ____fput+0x16/0x20 [ 314.308583][ C0] task_work_run+0x145/0x1c0 [ 314.313176][ C0] exit_to_usermode_loop+0x316/0x380 [ 314.318463][ C0] do_syscall_64+0x65f/0x760 [ 314.323054][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 314.328927][ C0] RIP: 0033:0x406571 [ 314.332821][ 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 [ 314.352538][ C0] RSP: 002b:00007ffda74eb850 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 314.360947][ C0] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000406571 [ 314.368924][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 314.376882][ C0] RBP: 00000000006dcc20 R08: 0000000000000140 R09: 0000000000000140 [ 314.384841][ C0] R10: 00007ffda74eb880 R11: 0000000000000293 R12: 00007ffda74eb8b0 [ 314.392821][ C0] R13: 00000000006dcc2c R14: 000000000000002d R15: 0000000000000007