[ 67.833872][ T26] audit: type=1800 audit(1568450062.108:27): pid=9706 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 67.856030][ T26] audit: type=1800 audit(1568450062.108:28): pid=9706 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. [ 68.611978][ T26] audit: type=1800 audit(1568450062.958:29): pid=9706 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 [ 68.640451][ T26] audit: type=1800 audit(1568450062.958:30): pid=9706 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 '10.128.0.135' (ECDSA) to the list of known hosts. syzkaller login: [ 356.452068][ T9861] IPVS: ftp: loaded support on port[0] = 21 [ 356.498167][ T9861] chnl_net:caif_netlink_parms(): no params data found [ 356.520642][ T9861] bridge0: port 1(bridge_slave_0) entered blocking state [ 356.527782][ T9861] bridge0: port 1(bridge_slave_0) entered disabled state [ 356.535501][ T9861] device bridge_slave_0 entered promiscuous mode [ 356.542786][ T9861] bridge0: port 2(bridge_slave_1) entered blocking state [ 356.549932][ T9861] bridge0: port 2(bridge_slave_1) entered disabled state [ 356.557409][ T9861] device bridge_slave_1 entered promiscuous mode [ 356.570900][ T9861] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 356.580979][ T9861] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 356.596143][ T9861] team0: Port device team_slave_0 added [ 356.604469][ T9861] team0: Port device team_slave_1 added [ 356.661297][ T9861] device hsr_slave_0 entered promiscuous mode [ 356.709617][ T9861] device hsr_slave_1 entered promiscuous mode [ 356.764625][ T9861] bridge0: port 2(bridge_slave_1) entered blocking state [ 356.771696][ T9861] bridge0: port 2(bridge_slave_1) entered forwarding state [ 356.779029][ T9861] bridge0: port 1(bridge_slave_0) entered blocking state [ 356.786342][ T9861] bridge0: port 1(bridge_slave_0) entered forwarding state [ 356.811144][ T9861] 8021q: adding VLAN 0 to HW filter on device bond0 [ 356.821019][ T3024] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 356.828947][ T3024] bridge0: port 1(bridge_slave_0) entered disabled state [ 356.837128][ T3024] bridge0: port 2(bridge_slave_1) entered disabled state [ 356.845294][ T3024] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 356.855381][ T9861] 8021q: adding VLAN 0 to HW filter on device team0 [ 356.864542][ T3569] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 356.872998][ T3569] bridge0: port 1(bridge_slave_0) entered blocking state [ 356.880161][ T3569] bridge0: port 1(bridge_slave_0) entered forwarding state [ 356.898846][ T9861] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 356.909311][ T9861] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 356.921074][ T3024] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 356.929853][ T3024] bridge0: port 2(bridge_slave_1) entered blocking state [ 356.937238][ T3024] bridge0: port 2(bridge_slave_1) entered forwarding state [ 356.947294][ T3024] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 356.956241][ T3024] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready executing program [ 356.964636][ T3024] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 356.973079][ T3024] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 356.981520][ T3024] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 356.989110][ T3024] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 357.002215][ T9861] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 462.019326][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 462.025994][ C1] rcu: 1-...!: (10499 ticks this GP) idle=47a/0/0x3 softirq=9413/9413 fqs=3 [ 462.034817][ C1] (t=10501 jiffies g=9821 q=128) [ 462.039824][ C1] rcu: rcu_preempt kthread starved for 10496 jiffies! g9821 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 462.050986][ C1] rcu: RCU grace-period kthread stack dump: [ 462.056858][ C1] rcu_preempt R running task 29328 10 2 0x80004000 [ 462.064915][ C1] Call Trace: [ 462.068302][ C1] __schedule+0x755/0x1580 [ 462.072703][ C1] ? __sched_text_start+0x8/0x8 [ 462.077548][ C1] schedule+0xd9/0x260 [ 462.081608][ C1] schedule_timeout+0x486/0xc50 [ 462.086446][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 462.091372][ C1] ? usleep_range+0x170/0x170 [ 462.096033][ C1] ? trace_hardirqs_on+0x67/0x240 [ 462.101046][ C1] ? __kasan_check_read+0x11/0x20 [ 462.106052][ C1] ? __next_timer_interrupt+0x1a0/0x1a0 [ 462.111578][ C1] ? swake_up_one+0x60/0x60 [ 462.116072][ C1] rcu_gp_kthread+0x9b2/0x18c0 [ 462.120821][ C1] ? rcu_barrier+0x310/0x310 [ 462.125386][ C1] ? trace_hardirqs_on+0x67/0x240 [ 462.130390][ C1] ? __kasan_check_read+0x11/0x20 [ 462.135394][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 462.141618][ C1] ? __kthread_parkme+0x108/0x1c0 [ 462.146618][ C1] ? __kasan_check_read+0x11/0x20 [ 462.151618][ C1] kthread+0x361/0x430 [ 462.155682][ C1] ? rcu_barrier+0x310/0x310 [ 462.160254][ C1] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 462.166471][ C1] ret_from_fork+0x24/0x30 [ 462.170882][ C1] NMI backtrace for cpu 1 [ 462.175211][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0-rc8+ #0 [ 462.182292][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 462.192331][ C1] Call Trace: [ 462.195593][ C1] [ 462.198475][ C1] dump_stack+0x172/0x1f0 [ 462.202803][ C1] nmi_cpu_backtrace.cold+0x70/0xb2 [ 462.207988][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 462.214210][ C1] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 462.219904][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 462.225879][ C1] arch_trigger_cpumask_backtrace+0x14/0x20 [ 462.231758][ C1] rcu_dump_cpu_stacks+0x183/0x1cf [ 462.236856][ C1] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 462.242382][ C1] ? raise_softirq+0x138/0x340 [ 462.247124][ C1] update_process_times+0x32/0x80 [ 462.252130][ C1] tick_sched_handle+0xa2/0x190 [ 462.256959][ C1] tick_sched_timer+0x53/0x140 [ 462.261704][ C1] __hrtimer_run_queues+0x364/0xe40 [ 462.266883][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 462.272147][ C1] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 462.277672][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 462.283368][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 462.289411][ C1] hrtimer_interrupt+0x314/0x770 [ 462.294385][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 462.299911][ C1] apic_timer_interrupt+0xf/0x20 [ 462.304839][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 [ 462.311025][ C1] Code: 19 09 41 bc f4 ff ff ff e8 9d 9f e9 ff 48 c7 05 0e 4d 19 09 00 00 00 00 e9 77 e9 ff ff 90 90 90 90 90 90 90 90 90 55 48 89 e5 <65> 48 8b 04 25 40 fe 01 00 65 8b 15 f4 88 8f 7e 81 e2 00 01 1f 00 [ 462.330604][ C1] RSP: 0018:ffff8880ae909528 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff13 [ 462.338995][ C1] RAX: ffff88808a1b07a8 RBX: ffff88808a1b07b8 RCX: ffffffff85c66b39 [ 462.346956][ C1] RDX: ffff88808a1b0780 RSI: ffffffff85c66fb7 RDI: 0000000000000005 [ 462.354906][ C1] RBP: ffff8880ae909528 R08: ffff8880a98c6340 R09: 0000000000000000 [ 462.362860][ C1] R10: fffffbfff134afaf R11: ffff8880a98c6340 R12: dffffc0000000000 [ 462.370821][ C1] R13: ffff88808a1b04c0 R14: 0000000000000001 R15: 0000000000000000 [ 462.378783][ C1] ? apic_timer_interrupt+0xa/0x20 [ 462.383935][ C1] ? hhf_dequeue+0xb9/0xa20 [ 462.388428][ C1] ? hhf_dequeue+0x537/0xa20 [ 462.393011][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 462.399228][ C1] hhf_dequeue+0x552/0xa20 [ 462.403688][ C1] __qdisc_run+0x1e7/0x19d0 [ 462.408192][ C1] ? dev_queue_xmit+0x18/0x20 [ 462.412851][ C1] __dev_queue_xmit+0x16f1/0x3650 [ 462.417897][ C1] ? ndisc_constructor+0x1a5/0xb40 [ 462.422989][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 462.428278][ C1] ? ip6_finish_output2+0x1034/0x2520 [ 462.433641][ C1] ? __kasan_check_read+0x11/0x20 [ 462.438650][ C1] ? lock_downgrade+0x920/0x920 [ 462.443486][ C1] dev_queue_xmit+0x18/0x20 [ 462.447977][ C1] ? dev_queue_xmit+0x18/0x20 [ 462.452665][ C1] neigh_resolve_output+0x5a5/0x970 [ 462.457854][ C1] ip6_finish_output2+0x1034/0x2520 [ 462.463038][ C1] ? ip6_mtu+0x2e6/0x460 [ 462.467449][ C1] ? ip6_forward_finish+0x530/0x530 [ 462.472659][ C1] ? ip6_mtu+0x16f/0x460 [ 462.476905][ C1] __ip6_finish_output+0x444/0xa50 [ 462.481992][ C1] ? __ip6_finish_output+0x444/0xa50 [ 462.487255][ C1] ip6_finish_output+0x38/0x1f0 [ 462.492084][ C1] ip6_output+0x235/0x7c0 [ 462.496394][ C1] ? ip6_finish_output+0x1f0/0x1f0 [ 462.501492][ C1] ? __ip6_finish_output+0xa50/0xa50 [ 462.506762][ C1] ? icmp6_dst_alloc+0x432/0x660 [ 462.511683][ C1] mld_sendpack+0x9c7/0xea0 [ 462.516168][ C1] ? nf_hook.constprop.0+0x560/0x560 [ 462.521437][ C1] ? mld_ifc_timer_expire+0x437/0x8a0 [ 462.526802][ C1] ? __local_bh_enable_ip+0x15a/0x270 [ 462.532155][ C1] mld_ifc_timer_expire+0x449/0x8a0 [ 462.537421][ C1] call_timer_fn+0x1ac/0x780 [ 462.541990][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 462.547340][ C1] ? msleep_interruptible+0x150/0x150 [ 462.552689][ C1] ? trace_hardirqs_on+0x67/0x240 [ 462.557690][ C1] ? __kasan_check_read+0x11/0x20 [ 462.562690][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 462.568219][ C1] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 462.573572][ C1] run_timer_softirq+0x697/0x17a0 [ 462.578581][ C1] ? add_timer+0x930/0x930 [ 462.582979][ C1] ? kvm_clock_read+0x18/0x30 [ 462.587729][ C1] ? kvm_sched_clock_read+0x9/0x20 [ 462.592825][ C1] ? sched_clock+0x2e/0x50 [ 462.597317][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 462.602232][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 462.608450][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 462.614670][ C1] __do_softirq+0x262/0x98c [ 462.619151][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 462.623988][ C1] irq_exit+0x19b/0x1e0 [ 462.628124][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 462.633761][ C1] apic_timer_interrupt+0xf/0x20 [ 462.638672][ C1] [ 462.641605][ C1] RIP: 0010:native_safe_halt+0xe/0x10 [ 462.646956][ C1] Code: 88 63 6e fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 24 0b 4a 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 14 0b 4a 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 2e 23 22 fa e8 f9 [ 462.666624][ C1] RSP: 0018:ffff8880a98dfd68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 462.675099][ C1] RAX: 1ffffffff11a5e8d RBX: ffff8880a98c6340 RCX: 1ffffffff134b5ee [ 462.683048][ C1] RDX: dffffc0000000000 RSI: ffffffff8177f15e RDI: ffffffff873e150c [ 462.690999][ C1] RBP: ffff8880a98dfd98 R08: ffff8880a98c6340 R09: ffffed1015318c69 [ 462.698948][ C1] R10: ffffed1015318c68 R11: ffff8880a98c6347 R12: dffffc0000000000 [ 462.706900][ C1] R13: ffffffff89a57d78 R14: 0000000000000000 R15: 0000000000000001 [ 462.714870][ C1] ? trace_hardirqs_on+0x5e/0x240 [ 462.719872][ C1] ? default_idle+0x1c/0x360 [ 462.724447][ C1] ? default_idle+0x4e/0x360 [ 462.729026][ C1] arch_cpu_idle+0xa/0x10 [ 462.733333][ C1] default_idle_call+0x84/0xb0 [ 462.738094][ C1] do_idle+0x413/0x760 [ 462.742148][ C1] ? arch_cpu_idle_exit+0x80/0x80 [ 462.747169][ C1] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 462.752982][ C1] ? complete+0x61/0x80 [ 462.757146][ C1] cpu_startup_entry+0x1b/0x20 [ 462.761901][ C1] start_secondary+0x315/0x430 [ 462.766652][ C1] ? set_cpu_sibling_map+0x2180/0x2180 [ 462.772129][ C1] secondary_startup_64+0xa4/0xb0