[ 70.659024][ T26] audit: type=1800 audit(1564751150.008:27): pid=10031 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0
[ 70.684189][ T26] audit: type=1800 audit(1564751150.018:28): pid=10031 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[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 71.433716][ T26] audit: type=1800 audit(1564751150.848:29): pid=10031 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
[ 71.457033][ T26] audit: type=1800 audit(1564751150.858:30): pid=10031 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 '10.128.0.192' (ECDSA) to the list of known hosts.
syzkaller login: [ 191.238579][T10188] IPVS: ftp: loaded support on port[0] = 21
[ 191.278243][T10188] chnl_net:caif_netlink_parms(): no params data found
[ 191.299501][T10188] bridge0: port 1(bridge_slave_0) entered blocking state
[ 191.306652][T10188] bridge0: port 1(bridge_slave_0) entered disabled state
[ 191.314303][T10188] device bridge_slave_0 entered promiscuous mode
[ 191.321701][T10188] bridge0: port 2(bridge_slave_1) entered blocking state
[ 191.328831][T10188] bridge0: port 2(bridge_slave_1) entered disabled state
[ 191.336479][T10188] device bridge_slave_1 entered promiscuous mode
[ 191.349743][T10188] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 191.360181][T10188] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 191.376405][T10188] team0: Port device team_slave_0 added
[ 191.383095][T10188] team0: Port device team_slave_1 added
[ 191.438001][T10188] device hsr_slave_0 entered promiscuous mode
[ 191.486534][T10188] device hsr_slave_1 entered promiscuous mode
[ 191.541626][T10188] bridge0: port 2(bridge_slave_1) entered blocking state
[ 191.548738][T10188] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 191.556135][T10188] bridge0: port 1(bridge_slave_0) entered blocking state
[ 191.563664][T10188] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 191.590288][T10188] 8021q: adding VLAN 0 to HW filter on device bond0
[ 191.601421][ T2985] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 191.620172][ T2985] bridge0: port 1(bridge_slave_0) entered disabled state
[ 191.627898][ T2985] bridge0: port 2(bridge_slave_1) entered disabled state
[ 191.635625][ T2985] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 191.647579][T10188] 8021q: adding VLAN 0 to HW filter on device team0
[ 191.660203][ T3488] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 191.668868][ T3488] bridge0: port 1(bridge_slave_0) entered blocking state
[ 191.676087][ T3488] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 191.686313][T10190] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 191.694634][T10190] bridge0: port 2(bridge_slave_1) entered blocking state
[ 191.701975][T10190] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 191.722130][T10188] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
[ 191.732779][T10188] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[ 191.745058][ T3488] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 191.753834][ T3488] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 191.762143][ T3488] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 191.770549][ T3488] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 191.779023][ T3488] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
executing program
[ 191.786594][ T3488] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 191.800753][T10188] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 191.831434][ C0] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters.
[ 296.996200][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU
[ 297.003662][ C0] rcu: 0-....: (1 GPs behind) idle=6c6/1/0x4000000000000002 softirq=9944/9945 fqs=5250
[ 297.013498][ C0] (t=10500 jiffies g=10365 q=20)
[ 297.018509][ C0] NMI backtrace for cpu 0
[ 297.022824][ C0] CPU: 0 PID: 10188 Comm: syz-executor251 Not tainted 5.3.0-rc2-next-20190802 #58
[ 297.032005][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 297.042281][ C0] Call Trace:
[ 297.045558][ C0] <IRQ>
[ 297.048486][ C0] dump_stack+0x172/0x1f0
[ 297.052927][ C0] nmi_cpu_backtrace.cold+0x70/0xb2
[ 297.058114][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 297.064370][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45
[ 297.069998][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b
[ 297.075968][ C0] arch_trigger_cpumask_backtrace+0x14/0x20
[ 297.081851][ C0] rcu_dump_cpu_stacks+0x183/0x1cf
[ 297.086950][ C0] ? find_next_bit+0x107/0x130
[ 297.091726][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13
[ 297.097275][ C0] ? raise_softirq+0x138/0x340
[ 297.102082][ C0] update_process_times+0x32/0x80
[ 297.107119][ C0] tick_sched_handle+0xa2/0x190
[ 297.111967][ C0] tick_sched_timer+0x53/0x140
[ 297.116717][ C0] __hrtimer_run_queues+0x364/0xe40
[ 297.121918][ C0] ? tick_sched_do_timer+0x1b0/0x1b0
[ 297.127197][ C0] ? hrtimer_sleeper_start_expires+0x90/0x90
[ 297.133166][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 297.138884][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440
[ 297.144969][ C0] hrtimer_interrupt+0x314/0x770
[ 297.149960][ C0] smp_apic_timer_interrupt+0x160/0x610
[ 297.155498][ C0] apic_timer_interrupt+0xf/0x20
[ 297.160416][ C0] RIP: 0010:check_memory_region+0x1f/0x1a0
[ 297.166213][ 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
[ 297.185844][ C0] RSP: 0018:ffff8880ae8091e8 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff13
[ 297.194273][ C0] RAX: ffff7fffffffffff RBX: ffff8880a8788d08 RCX: ffffffff8158f457
[ 297.202236][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880a8788d08
[ 297.210337][ C0] RBP: ffff8880ae8091f0 R08: 1ffff110150f11a1 R09: ffffed10150f11a2
[ 297.218316][ C0] R10: ffffed10150f11a1 R11: ffff8880a8788d0b R12: 0000000000000001
[ 297.226299][ C0] R13: 0000000000000003 R14: ffffed10150f11a1 R15: 0000000000000001
[ 297.234307][ C0] ? apic_timer_interrupt+0xa/0x20
[ 297.239408][ C0] ? native_queued_spin_lock_slowpath+0xb7/0x9f0
[ 297.245724][ C0] __kasan_check_read+0x11/0x20
[ 297.250577][ C0] native_queued_spin_lock_slowpath+0xb7/0x9f0
[ 297.256716][ C0] ? __pv_queued_spin_lock_slowpath+0xd10/0xd10
[ 297.262940][ C0] ? mark_held_locks+0xf0/0xf0
[ 297.267696][ C0] do_raw_spin_lock+0x20e/0x2e0
[ 297.272534][ C0] ? rwlock_bug.part.0+0x90/0x90
[ 297.277453][ C0] ? lock_acquire+0x190/0x410
[ 297.282167][ C0] ? release_sock+0x20/0x1c0
[ 297.286772][ C0] ? __kasan_check_read+0x11/0x20
[ 297.291788][ C0] _raw_spin_lock_bh+0x3b/0x50
[ 297.296534][ C0] ? release_sock+0x20/0x1c0
[ 297.301104][ C0] release_sock+0x20/0x1c0
[ 297.305574][ C0] wait_on_pending_writer+0x20f/0x420
[ 297.310964][ C0] ? ip6_rcv_finish+0x1de/0x2f0
[ 297.315797][ C0] ? tls_init+0x560/0x560
[ 297.320163][ C0] ? process_backlog+0x206/0x750
[ 297.325080][ C0] ? net_rx_action+0x508/0x10c0
[ 297.329912][ C0] ? __do_softirq+0x262/0x98c
[ 297.334577][ C0] ? prepare_to_wait_exclusive+0x320/0x320
[ 297.340439][ C0] ? inet_release+0xed/0x200
[ 297.345053][ C0] ? inet6_release+0x53/0x80
[ 297.349665][ C0] ? __sock_release+0xce/0x280
[ 297.354497][ C0] ? sock_close+0x1e/0x30
[ 297.358804][ C0] ? __fput+0x2ff/0x890
[ 297.362935][ C0] ? ____fput+0x16/0x20
[ 297.367092][ C0] ? task_work_run+0x145/0x1c0
[ 297.371839][ C0] ? exit_to_usermode_loop+0x316/0x380
[ 297.377286][ C0] tls_sk_proto_cleanup+0x2c5/0x3e0
[ 297.382467][ C0] ? wait_on_pending_writer+0x420/0x420
[ 297.388022][ C0] tls_sk_proto_unhash+0x90/0x3f0
[ 297.393083][ C0] tcp_set_state+0x5b9/0x7d0
[ 297.397682][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[ 297.403961][ C0] ? __sk_mem_reduce_allocated+0x1b0/0x560
[ 297.409769][ C0] ? tcp_alloc_md5sig_pool+0x4a0/0x4a0
[ 297.415237][ C0] ? __sk_mem_reclaim+0x55/0x70
[ 297.420080][ C0] ? tcp_write_queue_purge+0x5d8/0x1310
[ 297.425687][ C0] ? inet6_sk_rx_dst_set+0x244/0x6f0
[ 297.430963][ C0] tcp_done+0xe2/0x320
[ 297.435013][ C0] tcp_reset+0x132/0x500
[ 297.439232][ C0] tcp_validate_incoming+0xa2d/0x1660
[ 297.444609][ C0] tcp_rcv_established+0x6b5/0x1e70
[ 297.449803][ C0] ? mark_held_locks+0xf0/0xf0
[ 297.454624][ C0] ? sk_filter_trim_cap+0x45f/0xb30
[ 297.459813][ C0] ? tcp_data_queue+0x4860/0x4860
[ 297.464821][ C0] ? do_raw_spin_lock+0x12a/0x2e0
[ 297.469825][ C0] ? rwlock_bug.part.0+0x90/0x90
[ 297.474743][ C0] ? lock_acquire+0x190/0x410
[ 297.479437][ C0] tcp_v6_do_rcv+0x41e/0x12c0
[ 297.485076][ C0] tcp_v6_rcv+0x31f1/0x3500
[ 297.489582][ C0] ? tcp_v6_syn_recv_sock+0x2290/0x2290
[ 297.495180][ C0] ? nf_confirm+0x360/0x4d0
[ 297.499671][ C0] ? mark_held_locks+0xf0/0xf0
[ 297.504451][ C0] ip6_protocol_deliver_rcu+0x2fe/0x1660
[ 297.510162][ C0] ip6_input_finish+0x84/0x170
[ 297.514909][ C0] ip6_input+0xe4/0x3f0
[ 297.519047][ C0] ? ip6_input_finish+0x170/0x170
[ 297.524061][ C0] ? __kasan_check_read+0x11/0x20
[ 297.529080][ C0] ? ip6_protocol_deliver_rcu+0x1660/0x1660
[ 297.534989][ C0] ? lock_downgrade+0x920/0x920
[ 297.539865][ C0] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20
[ 297.546098][ C0] ip6_rcv_finish+0x1de/0x2f0
[ 297.550782][ C0] ipv6_rcv+0x10e/0x420
[ 297.554963][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0
[ 297.560414][ C0] ? lock_downgrade+0x920/0x920
[ 297.565273][ C0] ? lock_downgrade+0x920/0x920
[ 297.570115][ C0] ? ip6_rcv_finish_core.isra.0+0x560/0x560
[ 297.576004][ C0] ? trace_hardirqs_off+0x62/0x240
[ 297.581100][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0
[ 297.586541][ C0] __netif_receive_skb_one_core+0x113/0x1a0
[ 297.592441][ C0] ? __netif_receive_skb_core+0x3060/0x3060
[ 297.598321][ C0] ? lock_acquire+0x190/0x410
[ 297.602981][ C0] ? process_backlog+0x195/0x750
[ 297.607932][ C0] __netif_receive_skb+0x2c/0x1d0
[ 297.612938][ C0] process_backlog+0x206/0x750
[ 297.617688][ C0] ? lock_acquire+0x190/0x410
[ 297.622343][ C0] ? clockevents_program_event+0x15a/0x370
[ 297.628131][ C0] net_rx_action+0x508/0x10c0
[ 297.632798][ C0] ? napi_complete_done+0x4b0/0x4b0
[ 297.637979][ C0] ? sched_clock+0x2e/0x50
[ 297.642377][ C0] ? kvm_clock_read+0x18/0x30
[ 297.647120][ C0] ? inet_csk_listen_stop+0x1bc/0x850
[ 297.652482][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 297.658726][ C0] __do_softirq+0x262/0x98c
[ 297.663215][ C0] ? inet_csk_listen_stop+0x1bc/0x850
[ 297.668575][ C0] do_softirq_own_stack+0x2a/0x40
[ 297.673575][ C0] </IRQ>
[ 297.676493][ C0] do_softirq.part.0+0x11a/0x170
[ 297.681408][ C0] __local_bh_enable_ip+0x211/0x270
[ 297.686618][ C0] inet_csk_listen_stop+0x1e0/0x850
[ 297.691806][ C0] tcp_close+0xd5b/0x10e0
[ 297.696136][ C0] ? ip_mc_drop_socket+0x211/0x270
[ 297.701341][ C0] ? down_write+0xdf/0x150
[ 297.705737][ C0] inet_release+0xed/0x200
[ 297.710138][ C0] inet6_release+0x53/0x80
[ 297.714566][ C0] __sock_release+0xce/0x280
[ 297.719249][ C0] sock_close+0x1e/0x30
[ 297.723386][ C0] __fput+0x2ff/0x890
[ 297.727365][ C0] ? __sock_release+0x280/0x280
[ 297.732201][ C0] ____fput+0x16/0x20
[ 297.736167][ C0] task_work_run+0x145/0x1c0
[ 297.740752][ C0] exit_to_usermode_loop+0x316/0x380
[ 297.746018][ C0] do_syscall_64+0x65f/0x760
[ 297.750613][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 297.756486][ C0] RIP: 0033:0x4065c1
[ 297.760363][ 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
[ 297.779968][ C0] RSP: 002b:00007fffe9ed56d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
[ 297.788398][ C0] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00000000004065c1
[ 297.796379][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
[ 297.804484][ C0] RBP: 00000000006dcc20 R08: 0000000000000140 R09: 0000000000000140
[ 297.812445][ C0] R10: 00007fffe9ed5700 R11: 0000000000000293 R12: 00007fffe9ed5730
[ 297.820422][ C0] R13: 00000000006dcc2c R14: 0000000000000000 R15: 000000000000002d
[ 301.526279][T10192] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-... } 10925 jiffies s: 105 root: 0x1/.
[ 301.537958][T10192] rcu: blocking rcu_node structures:
[ 301.543246][T10192] Task dump for CPU 0:
[ 301.547685][T10192] syz-executor251 R running task 24512 10188 10187 0x8000000a
[ 301.555600][T10192] Call Trace:
[ 301.559265][T10192] ? __kasan_check_read+0x11/0x20
[ 301.564308][T10192] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 301.571004][T10192] ? lock_downgrade+0x920/0x920
[ 301.575862][T10192] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 301.582464][T10192] ? __this_cpu_preempt_check+0x3a/0x210
[ 301.588391][T10192] ? inet_csk_listen_stop+0x1bc/0x850
[ 301.593770][T10192] ? ksoftirqd_running+0x16/0x70
[ 301.599077][T10192] ? inet_csk_listen_stop+0x1bc/0x850
[ 301.604726][T10192] ? do_softirq.part.0+0x11a/0x170
[ 301.610184][T10192] ? __local_bh_enable_ip+0x211/0x270
[ 301.615575][T10192] ? inet_csk_listen_stop+0x1e0/0x850
[ 301.621384][T10192] ? tcp_close+0xd5b/0x10e0
[ 301.625901][T10192] ? ip_mc_drop_socket+0x211/0x270
[ 301.631330][T10192] ? down_write+0xdf/0x150
[ 301.635759][T10192] ? inet_release+0xed/0x200
[ 301.640759][T10192] ? inet6_release+0x53/0x80
[ 301.645365][T10192] ? __sock_release+0xce/0x280
[ 301.650454][T10192] ? sock_close+0x1e/0x30
[ 301.654795][T10192] ? __fput+0x2ff/0x890
[ 301.659313][T10192] ? __sock_release+0x280/0x280
[ 301.664178][T10192] ? ____fput+0x16/0x20
[ 301.668661][T10192] ? task_work_run+0x145/0x1c0
[ 301.673441][T10192] ? exit_to_usermode_loop+0x316/0x380
[ 301.679326][T10192] ? do_syscall_64+0x65f/0x760
[ 301.684130][T10192] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe