[ 70.340898][ T27] audit: type=1800 audit(1564280911.122:27): pid=10186 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 70.365277][ T27] audit: type=1800 audit(1564280911.122:28): pid=10186 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. [ 71.059860][ T27] audit: type=1800 audit(1564280911.892:29): pid=10186 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 [ 71.082856][ T27] audit: type=1800 audit(1564280911.892:30): pid=10186 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 '10.128.0.44' (ECDSA) to the list of known hosts. syzkaller login: [ 171.761512][T10342] IPVS: ftp: loaded support on port[0] = 21 [ 171.802582][T10342] chnl_net:caif_netlink_parms(): no params data found [ 171.824225][T10342] bridge0: port 1(bridge_slave_0) entered blocking state [ 171.831646][T10342] bridge0: port 1(bridge_slave_0) entered disabled state [ 171.839590][T10342] device bridge_slave_0 entered promiscuous mode [ 171.847006][T10342] bridge0: port 2(bridge_slave_1) entered blocking state [ 171.854508][T10342] bridge0: port 2(bridge_slave_1) entered disabled state [ 171.862426][T10342] device bridge_slave_1 entered promiscuous mode [ 171.875983][T10342] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 171.886594][T10342] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 171.902357][T10342] team0: Port device team_slave_0 added [ 171.909238][T10342] team0: Port device team_slave_1 added [ 171.991975][T10342] device hsr_slave_0 entered promiscuous mode [ 172.070566][T10342] device hsr_slave_1 entered promiscuous mode [ 172.155685][T10342] bridge0: port 2(bridge_slave_1) entered blocking state [ 172.162841][T10342] bridge0: port 2(bridge_slave_1) entered forwarding state [ 172.170358][T10342] bridge0: port 1(bridge_slave_0) entered blocking state [ 172.177528][T10342] bridge0: port 1(bridge_slave_0) entered forwarding state [ 172.202412][T10342] 8021q: adding VLAN 0 to HW filter on device bond0 [ 172.213537][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 172.232170][ T3014] bridge0: port 1(bridge_slave_0) entered disabled state [ 172.240364][ T3014] bridge0: port 2(bridge_slave_1) entered disabled state [ 172.248888][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 172.259077][T10342] 8021q: adding VLAN 0 to HW filter on device team0 [ 172.268392][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 172.276728][ T3516] bridge0: port 1(bridge_slave_0) entered blocking state [ 172.283783][ T3516] bridge0: port 1(bridge_slave_0) entered forwarding state [ 172.301516][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 172.310109][ T3014] bridge0: port 2(bridge_slave_1) entered blocking state [ 172.317326][ T3014] bridge0: port 2(bridge_slave_1) entered forwarding state [ 172.326100][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 172.334718][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 172.343426][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 172.352900][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 172.362533][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 172.372020][T10342] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 172.385946][T10342] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 277.570316][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 277.577765][ C0] rcu: 0-...!: (1 GPs behind) idle=782/1/0x4000000000000002 softirq=9496/9497 fqs=2 [ 277.588617][ C0] (t=10501 jiffies g=10517 q=7) [ 277.593564][ C0] rcu: rcu_preempt kthread starved for 10498 jiffies! g10517 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 277.605277][ C0] rcu: RCU grace-period kthread stack dump: [ 277.611284][ C0] rcu_preempt I29528 10 2 0x80004000 [ 277.617973][ C0] Call Trace: [ 277.621518][ C0] __schedule+0x755/0x15b0 [ 277.627604][ C0] ? __sched_text_start+0x8/0x8 [ 277.632471][ C0] schedule+0xa8/0x270 [ 277.637076][ C0] schedule_timeout+0x486/0xc50 [ 277.642199][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 277.647410][ C0] ? usleep_range+0x170/0x170 [ 277.653548][ C0] ? trace_hardirqs_on+0x67/0x240 [ 277.661701][ C0] ? __kasan_check_read+0x11/0x20 [ 277.668186][ C0] ? __next_timer_interrupt+0x1a0/0x1a0 [ 277.674055][ C0] ? swake_up_one+0x60/0x60 [ 277.678715][ C0] rcu_gp_kthread+0x9b2/0x18c0 [ 277.684103][ C0] ? rcu_barrier+0x310/0x310 [ 277.688865][ C0] ? trace_hardirqs_on+0x67/0x240 [ 277.693893][ C0] ? __kasan_check_read+0x11/0x20 [ 277.699790][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 277.706092][ C0] ? __kthread_parkme+0x108/0x1c0 [ 277.711149][ C0] ? __kasan_check_read+0x11/0x20 [ 277.716223][ C0] kthread+0x361/0x430 [ 277.720299][ C0] ? rcu_barrier+0x310/0x310 [ 277.724891][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 277.731138][ C0] ret_from_fork+0x24/0x30 [ 277.735733][ C0] NMI backtrace for cpu 0 [ 277.740100][ C0] CPU: 0 PID: 10342 Comm: syz-executor795 Not tainted 5.3.0-rc1-next-20190726 #53 [ 277.749382][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 277.759447][ C0] Call Trace: [ 277.762740][ C0] [ 277.768214][ C0] dump_stack+0x172/0x1f0 [ 277.772560][ C0] nmi_cpu_backtrace.cold+0x70/0xb2 [ 277.777772][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 277.784107][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 277.789761][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 277.795762][ C0] arch_trigger_cpumask_backtrace+0x14/0x20 [ 277.801676][ C0] rcu_dump_cpu_stacks+0x183/0x1cf [ 277.806803][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 277.812413][ C0] ? raise_softirq+0x138/0x340 [ 277.817186][ C0] update_process_times+0x32/0x80 [ 277.822364][ C0] tick_sched_handle+0xa2/0x190 [ 277.827217][ C0] tick_sched_timer+0x53/0x140 [ 277.832156][ C0] __hrtimer_run_queues+0x364/0xe40 [ 277.837364][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 277.842655][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 277.848724][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 277.854449][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 277.860546][ C0] hrtimer_interrupt+0x314/0x770 [ 277.865512][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 277.871408][ C0] apic_timer_interrupt+0xf/0x20 [ 277.876357][ C0] RIP: 0010:__kasan_check_read+0x0/0x20 [ 277.881901][ C0] Code: e8 99 48 af ff 0f 0b 4c 8b 4d d0 e9 27 ee ff ff 48 8b 73 58 89 c2 48 c7 c7 c8 a9 89 88 f7 da e8 7a 48 af ff e9 da ee ff ff 90 <55> 89 f6 31 d2 48 89 e5 48 8b 4d 08 e8 cf 26 00 00 5d c3 0f 1f 00 [ 277.901512][ C0] RSP: 0018:ffff8880ae809208 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 277.909928][ C0] RAX: 0000000000000000 RBX: ffff88808e5bcd08 RCX: ffffffff8159a3d7 [ 277.917920][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88808e5bcd08 [ 277.925890][ C0] RBP: ffff8880ae8092d0 R08: 1ffff11011cb79a1 R09: ffffed1011cb79a2 [ 277.933858][ C0] R10: ffffed1011cb79a1 R11: ffff88808e5bcd0b R12: 0000000000000001 [ 277.941828][ C0] R13: 0000000000000003 R14: ffffed1011cb79a1 R15: 0000000000000001 [ 277.949813][ C0] ? apic_timer_interrupt+0xa/0x20 [ 277.954936][ C0] ? native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 277.961288][ C0] ? native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 277.967627][ C0] ? __pv_queued_spin_lock_slowpath+0xd10/0xd10 [ 277.973876][ C0] ? mark_held_locks+0xf0/0xf0 [ 277.978671][ C0] do_raw_spin_lock+0x20e/0x2e0 [ 277.983542][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 277.989160][ C0] ? lock_acquire+0x190/0x410 [ 277.993971][ C0] ? release_sock+0x20/0x1c0 [ 277.998614][ C0] ? __kasan_check_read+0x11/0x20 [ 278.003665][ C0] _raw_spin_lock_bh+0x3b/0x50 [ 278.008443][ C0] ? release_sock+0x20/0x1c0 [ 278.013406][ C0] release_sock+0x20/0x1c0 [ 278.017948][ C0] wait_on_pending_writer+0x20f/0x420 [ 278.023398][ C0] ? ip6_rcv_finish+0x1de/0x2f0 [ 278.028280][ C0] ? tls_init+0x560/0x560 [ 278.032690][ C0] ? process_backlog+0x206/0x750 [ 278.037672][ C0] ? net_rx_action+0x508/0x10c0 [ 278.042624][ C0] ? __do_softirq+0x262/0x98c [ 278.047315][ C0] ? prepare_to_wait_exclusive+0x320/0x320 [ 278.053259][ C0] ? inet_release+0xed/0x200 [ 278.057916][ C0] ? inet6_release+0x53/0x80 [ 278.062585][ C0] ? __sock_release+0xce/0x280 [ 278.067632][ C0] ? sock_close+0x1e/0x30 [ 278.072160][ C0] ? __fput+0x2ff/0x890 [ 278.076515][ C0] ? ____fput+0x16/0x20 [ 278.080767][ C0] ? task_work_run+0x145/0x1c0 [ 278.085596][ C0] ? exit_to_usermode_loop+0x316/0x380 [ 278.091059][ C0] tls_sk_proto_cleanup+0x2c5/0x3e0 [ 278.096252][ C0] ? wait_on_pending_writer+0x420/0x420 [ 278.101794][ C0] tls_sk_proto_unhash+0x90/0x3f0 [ 278.106866][ C0] tcp_set_state+0x5b9/0x7d0 [ 278.111451][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 278.117685][ C0] ? __sk_mem_reduce_allocated+0x1b0/0x560 [ 278.123552][ C0] ? tcp_alloc_md5sig_pool+0x4a0/0x4a0 [ 278.129002][ C0] ? __sk_mem_reclaim+0x55/0x70 [ 278.133848][ C0] ? tcp_write_queue_purge+0x5d8/0x1310 [ 278.139386][ C0] ? lock_downgrade+0x920/0x920 [ 278.144242][ C0] tcp_done+0xe2/0x320 [ 278.148312][ C0] tcp_reset+0x132/0x500 [ 278.152551][ C0] tcp_validate_incoming+0xa2d/0x1660 [ 278.157930][ C0] tcp_rcv_established+0x6b5/0x1e70 [ 278.163133][ C0] ? tcp_data_queue+0x4860/0x4860 [ 278.168233][ C0] tcp_v6_do_rcv+0x41e/0x12c0 [ 278.172929][ C0] tcp_v6_rcv+0x31f1/0x3500 [ 278.177436][ C0] ? tcp_v6_syn_recv_sock+0x2290/0x2290 [ 278.183069][ C0] ? nf_confirm+0x360/0x4d0 [ 278.187573][ C0] ? mark_held_locks+0xf0/0xf0 [ 278.192336][ C0] ip6_protocol_deliver_rcu+0x2fe/0x1660 [ 278.197974][ C0] ip6_input_finish+0x84/0x170 [ 278.202736][ C0] ip6_input+0xe4/0x3f0 [ 278.206893][ C0] ? ip6_input_finish+0x170/0x170 [ 278.211919][ C0] ? __kasan_check_read+0x11/0x20 [ 278.216949][ C0] ? ip6_protocol_deliver_rcu+0x1660/0x1660 [ 278.222852][ C0] ? lock_downgrade+0x920/0x920 [ 278.227715][ C0] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 278.234049][ C0] ip6_rcv_finish+0x1de/0x2f0 [ 278.238729][ C0] ipv6_rcv+0x10e/0x420 [ 278.243060][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 278.248519][ C0] ? lock_downgrade+0x920/0x920 [ 278.253369][ C0] ? lock_downgrade+0x920/0x920 [ 278.258230][ C0] ? ip6_rcv_finish_core.isra.0+0x560/0x560 [ 278.264124][ C0] ? trace_hardirqs_off+0x62/0x240 [ 278.269256][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 278.274722][ C0] __netif_receive_skb_one_core+0x113/0x1a0 [ 278.280626][ C0] ? __netif_receive_skb_core+0x3060/0x3060 [ 278.287139][ C0] ? lock_acquire+0x190/0x410 [ 278.291821][ C0] ? process_backlog+0x195/0x750 [ 278.296766][ C0] __netif_receive_skb+0x2c/0x1d0 [ 278.301830][ C0] process_backlog+0x206/0x750 [ 278.306602][ C0] ? lock_acquire+0x190/0x410 [ 278.311301][ C0] ? clockevents_program_event+0x15a/0x370 [ 278.317122][ C0] net_rx_action+0x508/0x10c0 [ 278.321817][ C0] ? napi_complete_done+0x4b0/0x4b0 [ 278.327078][ C0] ? sched_clock+0x2e/0x50 [ 278.331547][ C0] ? kvm_clock_read+0x18/0x30 [ 278.336235][ C0] ? inet_csk_listen_stop+0x1bc/0x850 [ 278.341649][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 278.347901][ C0] __do_softirq+0x262/0x98c [ 278.352420][ C0] ? inet_csk_listen_stop+0x1bc/0x850 [ 278.357808][ C0] do_softirq_own_stack+0x2a/0x40 [ 278.362823][ C0] [ 278.365766][ C0] do_softirq.part.0+0x11a/0x170 [ 278.370718][ C0] __local_bh_enable_ip+0x211/0x270 [ 278.375926][ C0] inet_csk_listen_stop+0x1e0/0x850 [ 278.381149][ C0] tcp_close+0xd5b/0x10e0 [ 278.385511][ C0] ? ip_mc_drop_socket+0x211/0x270 [ 278.390632][ C0] ? down_write+0xdf/0x150 [ 278.395056][ C0] inet_release+0xed/0x200 [ 278.399485][ C0] inet6_release+0x53/0x80 [ 278.403910][ C0] __sock_release+0xce/0x280 [ 278.409489][ C0] sock_close+0x1e/0x30 [ 278.413652][ C0] __fput+0x2ff/0x890 [ 278.417666][ C0] ? __sock_release+0x280/0x280 [ 278.422529][ C0] ____fput+0x16/0x20 [ 278.426533][ C0] task_work_run+0x145/0x1c0 [ 278.431136][ C0] exit_to_usermode_loop+0x316/0x380 [ 278.436611][ C0] do_syscall_64+0x65f/0x760 [ 278.441212][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 278.447104][ C0] RIP: 0033:0x406571 [ 278.450994][ 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 [ 278.470596][ C0] RSP: 002b:00007fff0d2d5560 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 278.479201][ C0] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000406571 [ 278.487175][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 278.495151][ C0] RBP: 00000000006dcc20 R08: 0000000000000140 R09: 0000000000000140 [ 278.503144][ C0] R10: 00007fff0d2d5590 R11: 0000000000000293 R12: 00007fff0d2d55c0 [ 278.511121][ C0] R13: 00000000006dcc2c R14: 000000000000002d R15: 0000000000000007