[ 69.168828][ T26] audit: type=1800 audit(1564271833.089:27): pid=9935 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 69.200826][ T26] audit: type=1800 audit(1564271833.089:28): pid=9935 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. [ 69.819507][ T26] audit: type=1800 audit(1564271833.809:29): pid=9935 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 [ 69.839928][ T26] audit: type=1800 audit(1564271833.809:30): pid=9935 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 '10.128.0.118' (ECDSA) to the list of known hosts. syzkaller login: [ 164.666183][T10087] IPVS: ftp: loaded support on port[0] = 21 [ 164.709696][T10087] chnl_net:caif_netlink_parms(): no params data found [ 164.733846][T10087] bridge0: port 1(bridge_slave_0) entered blocking state [ 164.741382][T10087] bridge0: port 1(bridge_slave_0) entered disabled state [ 164.748977][T10087] device bridge_slave_0 entered promiscuous mode [ 164.756667][T10087] bridge0: port 2(bridge_slave_1) entered blocking state [ 164.764247][T10087] bridge0: port 2(bridge_slave_1) entered disabled state [ 164.772285][T10087] device bridge_slave_1 entered promiscuous mode [ 164.786485][T10087] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 164.797042][T10087] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 164.813535][T10087] team0: Port device team_slave_0 added [ 164.820794][T10087] team0: Port device team_slave_1 added [ 164.876594][T10087] device hsr_slave_0 entered promiscuous mode [ 164.915196][T10087] device hsr_slave_1 entered promiscuous mode [ 164.960099][T10087] bridge0: port 2(bridge_slave_1) entered blocking state [ 164.967468][T10087] bridge0: port 2(bridge_slave_1) entered forwarding state [ 164.975014][T10087] bridge0: port 1(bridge_slave_0) entered blocking state [ 164.983338][T10087] bridge0: port 1(bridge_slave_0) entered forwarding state [ 165.009391][T10087] 8021q: adding VLAN 0 to HW filter on device bond0 [ 165.020940][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 165.040108][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 165.048060][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 165.056357][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 165.067342][T10087] 8021q: adding VLAN 0 to HW filter on device team0 [ 165.077073][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 165.085793][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 165.093066][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 165.113854][T10087] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 165.124774][T10087] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 165.136589][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 165.145658][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 165.152717][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 165.161251][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 165.169651][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 165.178742][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 165.187171][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 165.196337][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 165.204430][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 165.218740][T10087] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 270.404697][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 270.411616][ C1] rcu: 1-...!: (1 GPs behind) idle=9e2/1/0x4000000000000002 softirq=10110/10111 fqs=2 [ 270.421584][ C1] (t=10500 jiffies g=9809 q=2) [ 270.426419][ C1] rcu: rcu_preempt kthread starved for 10496 jiffies! g9809 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 270.437667][ C1] rcu: RCU grace-period kthread stack dump: [ 270.443642][ C1] rcu_preempt I29528 10 2 0x80004000 [ 270.449960][ C1] Call Trace: [ 270.453304][ C1] __schedule+0x755/0x15b0 [ 270.457708][ C1] ? __sched_text_start+0x8/0x8 [ 270.462632][ C1] schedule+0xa8/0x270 [ 270.466737][ C1] schedule_timeout+0x486/0xc50 [ 270.471590][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 270.476510][ C1] ? usleep_range+0x170/0x170 [ 270.481181][ C1] ? trace_hardirqs_on+0x67/0x240 [ 270.486190][ C1] ? __kasan_check_read+0x11/0x20 [ 270.491204][ C1] ? __next_timer_interrupt+0x1a0/0x1a0 [ 270.496762][ C1] ? swake_up_one+0x60/0x60 [ 270.501252][ C1] rcu_gp_kthread+0x9b2/0x18c0 [ 270.506028][ C1] ? rcu_barrier+0x310/0x310 [ 270.510602][ C1] ? trace_hardirqs_on+0x67/0x240 [ 270.515609][ C1] ? __kasan_check_read+0x11/0x20 [ 270.520623][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 270.527212][ C1] ? __kthread_parkme+0x108/0x1c0 [ 270.532481][ C1] ? __kasan_check_read+0x11/0x20 [ 270.537489][ C1] kthread+0x361/0x430 [ 270.541544][ C1] ? rcu_barrier+0x310/0x310 [ 270.546116][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 270.552353][ C1] ret_from_fork+0x24/0x30 [ 270.556792][ C1] NMI backtrace for cpu 1 [ 270.561370][ C1] CPU: 1 PID: 10087 Comm: syz-executor260 Not tainted 5.3.0-rc1-next-20190726 #53 [ 270.570538][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 270.580575][ C1] Call Trace: [ 270.583842][ C1] [ 270.586766][ C1] dump_stack+0x172/0x1f0 [ 270.591094][ C1] nmi_cpu_backtrace.cold+0x70/0xb2 [ 270.596276][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 270.602498][ C1] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 270.608202][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 270.614168][ C1] arch_trigger_cpumask_backtrace+0x14/0x20 [ 270.620072][ C1] rcu_dump_cpu_stacks+0x183/0x1cf [ 270.625172][ C1] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 270.630705][ C1] ? raise_softirq+0x138/0x340 [ 270.635455][ C1] update_process_times+0x32/0x80 [ 270.640471][ C1] tick_sched_handle+0xa2/0x190 [ 270.645303][ C1] tick_sched_timer+0x53/0x140 [ 270.650051][ C1] __hrtimer_run_queues+0x364/0xe40 [ 270.655240][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 270.660510][ C1] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 270.666040][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 270.671743][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 270.677799][ C1] hrtimer_interrupt+0x314/0x770 [ 270.682727][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 270.688256][ C1] apic_timer_interrupt+0xf/0x20 [ 270.693190][ C1] RIP: 0010:native_queued_spin_lock_slowpath+0x132/0x9f0 [ 270.700196][ C1] Code: 00 00 00 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 37 07 00 00 48 81 c4 98 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 f3 90 73 ff ff ff 8b 45 98 4c 8d 65 d8 3d 00 01 00 00 0f 84 e5 00 00 [ 270.719795][ C1] RSP: 0018:ffff8880ae909210 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 270.728625][ C1] RAX: 0000000000000000 RBX: ffff88808d6d2d08 RCX: ffffffff8159a3d7 [ 270.737276][ C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88808d6d2d08 [ 270.745231][ C1] RBP: ffff8880ae9092d0 R08: 1ffff11011ada5a1 R09: ffffed1011ada5a2 [ 270.753232][ C1] R10: ffffed1011ada5a1 R11: ffff88808d6d2d0b R12: 0000000000000001 [ 270.761185][ C1] R13: 0000000000000003 R14: ffffed1011ada5a1 R15: 0000000000000001 [ 270.769159][ C1] ? apic_timer_interrupt+0xa/0x20 [ 270.774257][ C1] ? native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 270.780573][ C1] ? __pv_queued_spin_lock_slowpath+0xd10/0xd10 [ 270.786797][ C1] ? mark_held_locks+0xf0/0xf0 [ 270.791556][ C1] do_raw_spin_lock+0x20e/0x2e0 [ 270.796391][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 270.801332][ C1] ? lock_acquire+0x190/0x410 [ 270.806227][ C1] ? release_sock+0x20/0x1c0 [ 270.810803][ C1] ? __kasan_check_read+0x11/0x20 [ 270.815814][ C1] _raw_spin_lock_bh+0x3b/0x50 [ 270.820561][ C1] ? release_sock+0x20/0x1c0 [ 270.825133][ C1] release_sock+0x20/0x1c0 [ 270.829585][ C1] wait_on_pending_writer+0x20f/0x420 [ 270.834960][ C1] ? ip6_rcv_finish+0x1de/0x2f0 [ 270.839793][ C1] ? tls_init+0x560/0x560 [ 270.844149][ C1] ? process_backlog+0x206/0x750 [ 270.849071][ C1] ? net_rx_action+0x508/0x10c0 [ 270.853907][ C1] ? __do_softirq+0x262/0x98c [ 270.858569][ C1] ? prepare_to_wait_exclusive+0x320/0x320 [ 270.864414][ C1] ? inet_release+0xed/0x200 [ 270.869270][ C1] ? inet6_release+0x53/0x80 [ 270.873872][ C1] ? __sock_release+0xce/0x280 [ 270.878624][ C1] ? sock_close+0x1e/0x30 [ 270.882953][ C1] ? __fput+0x2ff/0x890 [ 270.887091][ C1] ? ____fput+0x16/0x20 [ 270.891231][ C1] ? task_work_run+0x145/0x1c0 [ 270.895977][ C1] ? exit_to_usermode_loop+0x316/0x380 [ 270.901438][ C1] tls_sk_proto_cleanup+0x2c5/0x3e0 [ 270.906638][ C1] ? wait_on_pending_writer+0x420/0x420 [ 270.912350][ C1] tls_sk_proto_unhash+0x90/0x3f0 [ 270.917430][ C1] tcp_set_state+0x5b9/0x7d0 [ 270.922006][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 270.928253][ C1] ? __sk_mem_reduce_allocated+0x1b0/0x560 [ 270.934047][ C1] ? tcp_alloc_md5sig_pool+0x4a0/0x4a0 [ 270.939504][ C1] ? __sk_mem_reclaim+0x55/0x70 [ 270.944337][ C1] ? tcp_write_queue_purge+0x5d8/0x1310 [ 270.949864][ C1] ? lock_downgrade+0x920/0x920 [ 270.954717][ C1] tcp_done+0xe2/0x320 [ 270.958784][ C1] tcp_reset+0x132/0x500 [ 270.963028][ C1] tcp_validate_incoming+0xa2d/0x1660 [ 270.968395][ C1] tcp_rcv_established+0x6b5/0x1e70 [ 270.973680][ C1] ? tcp_data_queue+0x4860/0x4860 [ 270.978761][ C1] tcp_v6_do_rcv+0x41e/0x12c0 [ 270.983443][ C1] tcp_v6_rcv+0x31f1/0x3500 [ 270.987947][ C1] ? tcp_v6_syn_recv_sock+0x2290/0x2290 [ 270.993508][ C1] ? nf_confirm+0x360/0x4d0 [ 270.998000][ C1] ? mark_held_locks+0xf0/0xf0 [ 271.002745][ C1] ip6_protocol_deliver_rcu+0x2fe/0x1660 [ 271.008364][ C1] ip6_input_finish+0x84/0x170 [ 271.014117][ C1] ip6_input+0xe4/0x3f0 [ 271.018262][ C1] ? ip6_input_finish+0x170/0x170 [ 271.023268][ C1] ? __kasan_check_read+0x11/0x20 [ 271.028304][ C1] ? ip6_protocol_deliver_rcu+0x1660/0x1660 [ 271.034266][ C1] ? lock_downgrade+0x920/0x920 [ 271.039099][ C1] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 271.045331][ C1] ip6_rcv_finish+0x1de/0x2f0 [ 271.049986][ C1] ipv6_rcv+0x10e/0x420 [ 271.054124][ C1] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 271.059563][ C1] ? lock_downgrade+0x920/0x920 [ 271.064392][ C1] ? lock_downgrade+0x920/0x920 [ 271.069499][ C1] ? ip6_rcv_finish_core.isra.0+0x560/0x560 [ 271.075377][ C1] ? trace_hardirqs_off+0x62/0x240 [ 271.080472][ C1] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 271.086089][ C1] __netif_receive_skb_one_core+0x113/0x1a0 [ 271.091963][ C1] ? __netif_receive_skb_core+0x3060/0x3060 [ 271.097839][ C1] ? lock_acquire+0x190/0x410 [ 271.102495][ C1] ? process_backlog+0x195/0x750 [ 271.107424][ C1] __netif_receive_skb+0x2c/0x1d0 [ 271.112427][ C1] process_backlog+0x206/0x750 [ 271.117172][ C1] ? lock_acquire+0x190/0x410 [ 271.121831][ C1] ? clockevents_program_event+0x15a/0x370 [ 271.127634][ C1] net_rx_action+0x508/0x10c0 [ 271.132308][ C1] ? napi_complete_done+0x4b0/0x4b0 [ 271.137491][ C1] ? sched_clock+0x2e/0x50 [ 271.141890][ C1] ? kvm_clock_read+0x18/0x30 [ 271.146549][ C1] ? inet_csk_listen_stop+0x1bc/0x850 [ 271.151905][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 271.158147][ C1] __do_softirq+0x262/0x98c [ 271.162655][ C1] ? inet_csk_listen_stop+0x1bc/0x850 [ 271.168011][ C1] do_softirq_own_stack+0x2a/0x40 [ 271.173272][ C1] [ 271.176197][ C1] do_softirq.part.0+0x11a/0x170 [ 271.181129][ C1] __local_bh_enable_ip+0x211/0x270 [ 271.186307][ C1] inet_csk_listen_stop+0x1e0/0x850 [ 271.191488][ C1] tcp_close+0xd5b/0x10e0 [ 271.195816][ C1] ? ip_mc_drop_socket+0x211/0x270 [ 271.200909][ C1] ? down_write+0xdf/0x150 [ 271.205340][ C1] inet_release+0xed/0x200 [ 271.209739][ C1] inet6_release+0x53/0x80 [ 271.214224][ C1] __sock_release+0xce/0x280 [ 271.218798][ C1] sock_close+0x1e/0x30 [ 271.222938][ C1] __fput+0x2ff/0x890 [ 271.226904][ C1] ? __sock_release+0x280/0x280 [ 271.231739][ C1] ____fput+0x16/0x20 [ 271.235703][ C1] task_work_run+0x145/0x1c0 [ 271.240275][ C1] exit_to_usermode_loop+0x316/0x380 [ 271.245542][ C1] do_syscall_64+0x65f/0x760 [ 271.250118][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 271.255997][ C1] RIP: 0033:0x406571 [ 271.259922][ C1] 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 [ 271.279957][ C1] RSP: 002b:00007ffc9a5b70b0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 271.288348][ C1] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000406571 [ 271.296304][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 271.304256][ C1] RBP: 00000000006dcc20 R08: 0000000000000140 R09: 0000000000000140 [ 271.314034][ C1] R10: 00007ffc9a5b70e0 R11: 0000000000000293 R12: 00007ffc9a5b7110 [ 271.322076][ C1] R13: 00000000006dcc2c R14: 000000000000002d R15: 0000000000000007