[ 67.751916][ T26] audit: type=1800 audit(1568274327.500:27): pid=9843 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 67.813085][ T26] audit: type=1800 audit(1568274327.620:28): pid=9843 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. [ 68.555383][ T26] audit: type=1800 audit(1568274328.360:29): pid=9843 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 [ 68.575939][ T26] audit: type=1800 audit(1568274328.360:30): pid=9843 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 '10.128.0.253' (ECDSA) to the list of known hosts. syzkaller login: [ 220.865636][ T9995] IPVS: ftp: loaded support on port[0] = 21 [ 220.906742][ T9995] chnl_net:caif_netlink_parms(): no params data found [ 220.928286][ T9995] bridge0: port 1(bridge_slave_0) entered blocking state [ 220.935527][ T9995] bridge0: port 1(bridge_slave_0) entered disabled state [ 220.943111][ T9995] device bridge_slave_0 entered promiscuous mode [ 220.950477][ T9995] bridge0: port 2(bridge_slave_1) entered blocking state [ 220.957530][ T9995] bridge0: port 2(bridge_slave_1) entered disabled state [ 220.965165][ T9995] device bridge_slave_1 entered promiscuous mode [ 220.978258][ T9995] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 220.988887][ T9995] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 221.004001][ T9995] team0: Port device team_slave_0 added [ 221.010899][ T9995] team0: Port device team_slave_1 added [ 221.089227][ T9995] device hsr_slave_0 entered promiscuous mode [ 221.167917][ T9995] device hsr_slave_1 entered promiscuous mode [ 221.223011][ T9995] bridge0: port 2(bridge_slave_1) entered blocking state [ 221.230161][ T9995] bridge0: port 2(bridge_slave_1) entered forwarding state [ 221.237449][ T9995] bridge0: port 1(bridge_slave_0) entered blocking state [ 221.244557][ T9995] bridge0: port 1(bridge_slave_0) entered forwarding state [ 221.269500][ T9995] 8021q: adding VLAN 0 to HW filter on device bond0 [ 221.281039][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 221.299638][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 221.307240][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 221.316020][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 221.326390][ T9995] 8021q: adding VLAN 0 to HW filter on device team0 [ 221.335865][ T3572] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 221.344377][ T3572] bridge0: port 1(bridge_slave_0) entered blocking state [ 221.351626][ T3572] bridge0: port 1(bridge_slave_0) entered forwarding state [ 221.369386][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 221.378236][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 221.385288][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 221.393421][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 221.402713][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 221.411558][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 221.420060][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 221.429709][ T3572] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 221.439466][ T9995] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 221.453899][ T9995] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 221.493708][ C0] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [ 371.477968][ T1057] INFO: task syz-executor279:9995 blocked for more than 143 seconds. [ 371.486088][ T1057] Not tainted 5.3.0-rc7+ #0 [ 371.491173][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 371.499891][ T1057] syz-executor279 D24264 9995 9994 0x00000000 [ 371.506213][ T1057] Call Trace: [ 371.509618][ T1057] __schedule+0x755/0x1580 [ 371.514048][ T1057] ? __sched_text_start+0x8/0x8 [ 371.518945][ T1057] schedule+0xd9/0x260 [ 371.523031][ T1057] schedule_timeout+0x717/0xc50 [ 371.527931][ T1057] ? __debug_object_init+0x4e6/0xee0 [ 371.533321][ T1057] ? __kasan_check_read+0x11/0x20 [ 371.538423][ T1057] ? usleep_range+0x170/0x170 [ 371.543104][ T1057] ? __kasan_check_write+0x14/0x20 [ 371.548249][ T1057] ? lock_downgrade+0x920/0x920 [ 371.553639][ T1057] ? rwlock_bug.part.0+0x90/0x90 [ 371.558609][ T1057] ? wait_for_completion+0x9e/0x440 [ 371.563934][ T1057] ? trace_hardirqs_on+0x67/0x240 [ 371.569330][ T1057] ? __kasan_check_read+0x11/0x20 [ 371.574365][ T1057] wait_for_completion+0x29c/0x440 [ 371.579541][ T1057] ? wait_for_completion_interruptible+0x470/0x470 [ 371.586060][ T1057] ? lock_downgrade+0x920/0x920 [ 371.591123][ T1057] ? wake_up_q+0xf0/0xf0 [ 371.595380][ T1057] ? trace_hardirqs_on+0x67/0x240 [ 371.600456][ T1057] ? __kasan_check_read+0x11/0x20 [ 371.605578][ T1057] __flush_work+0x508/0xa50 [ 371.610168][ T1057] ? __kernel_text_address+0xd/0x40 [ 371.615585][ T1057] ? alloc_unbound_pwq+0xcb0/0xcb0 [ 371.620742][ T1057] ? init_pwq+0x360/0x360 [ 371.625072][ T1057] ? __cancel_work_timer+0xc4/0x540 [ 371.630300][ T1057] ? trace_hardirqs_off+0x62/0x240 [ 371.635426][ T1057] ? trace_hardirqs_on+0x67/0x240 [ 371.640534][ T1057] __cancel_work_timer+0x3d9/0x540 [ 371.645653][ T1057] ? mod_delayed_work_on+0x200/0x200 [ 371.650980][ T1057] ? debug_object_active_state+0x28a/0x350 [ 371.656797][ T1057] ? __kasan_check_read+0x11/0x20 [ 371.661962][ T1057] ? __kasan_check_write+0x14/0x20 [ 371.667078][ T1057] ? lock_downgrade+0x920/0x920 [ 371.671955][ T1057] ? mark_held_locks+0xf0/0xf0 [ 371.676719][ T1057] cancel_delayed_work_sync+0x1b/0x20 [ 371.682197][ T1057] tls_sw_cancel_work_tx+0x68/0x80 [ 371.687313][ T1057] tls_sk_proto_close+0x4ac/0x990 [ 371.692365][ T1057] ? lock_acquire+0x190/0x410 [ 371.697039][ T1057] ? wait_on_pending_writer+0x420/0x420 [ 371.702704][ T1057] ? ip_mc_drop_socket+0x211/0x270 [ 371.707851][ T1057] ? down_write+0xdf/0x150 [ 371.712248][ T1057] inet_release+0xed/0x200 [ 371.716715][ T1057] inet6_release+0x53/0x80 [ 371.721202][ T1057] __sock_release+0xce/0x280 [ 371.726231][ T1057] sock_close+0x1e/0x30 [ 371.730419][ T1057] __fput+0x2ff/0x890 [ 371.734402][ T1057] ? __sock_release+0x280/0x280 [ 371.739292][ T1057] ____fput+0x16/0x20 [ 371.743285][ T1057] task_work_run+0x145/0x1c0 [ 371.747915][ T1057] exit_to_usermode_loop+0x316/0x380 [ 371.753203][ T1057] do_syscall_64+0x5a9/0x6a0 [ 371.757939][ T1057] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 371.763930][ T1057] RIP: 0033:0x401f40 [ 371.767874][ T1057] Code: ff ff ff 25 62 63 20 00 68 08 00 00 00 e9 60 ff ff ff ff 25 5a 63 20 00 68 09 00 00 00 e9 50 ff ff ff ff 25 52 63 20 00 68 0a <00> 00 00 e9 40 ff ff ff ff 25 4a 63 20 00 68 0b 00 00 00 e9 30 ff [ 371.787595][ T1057] RSP: 002b:00007fffd8200d58 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 371.797085][ T1057] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000401f40 [ 371.805089][ T1057] RDX: ffffffffffffffc1 RSI: 1201000000003618 RDI: 0000000000000004 [ 371.813088][ T1057] RBP: 00007fffd8200d70 R08: 0000000000000000 R09: 1201000000003618 [ 371.821118][ T1057] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 371.829132][ T1057] R13: 0000000000403170 R14: 0000000000000000 R15: 0000000000000000 [ 371.837107][ T1057] INFO: lockdep is turned off. [ 371.841903][ T1057] NMI backtrace for cpu 1 [ 371.846247][ T1057] CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc7+ #0 [ 371.853741][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 371.863905][ T1057] Call Trace: [ 371.867200][ T1057] dump_stack+0x172/0x1f0 [ 371.871512][ T1057] nmi_cpu_backtrace.cold+0x70/0xb2 [ 371.876713][ T1057] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 371.883011][ T1057] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 371.888633][ T1057] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 371.894597][ T1057] arch_trigger_cpumask_backtrace+0x14/0x20 [ 371.900483][ T1057] watchdog+0x9d0/0xef0 [ 371.904620][ T1057] kthread+0x361/0x430 [ 371.908664][ T1057] ? reset_hung_task_detector+0x30/0x30 [ 371.914185][ T1057] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 371.920407][ T1057] ret_from_fork+0x24/0x30 [ 371.924886][ T1057] Sending NMI from CPU 1 to CPUs 0: [ 371.930176][ C0] NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 [ 371.931130][ T1057] Kernel panic - not syncing: hung_task: blocked tasks [ 371.945305][ T1057] CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc7+ #0 [ 371.952744][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 371.963904][ T1057] Call Trace: [ 371.967178][ T1057] dump_stack+0x172/0x1f0 [ 371.971584][ T1057] panic+0x2dc/0x755 [ 371.975476][ T1057] ? add_taint.cold+0x16/0x16 [ 371.980135][ T1057] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 371.985845][ T1057] ? printk_safe_flush+0xf2/0x140 [ 371.990848][ T1057] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 371.997067][ T1057] ? nmi_trigger_cpumask_backtrace+0x224/0x28b [ 372.003193][ T1057] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 372.009330][ T1057] watchdog+0x9e1/0xef0 [ 372.013467][ T1057] kthread+0x361/0x430 [ 372.017535][ T1057] ? reset_hung_task_detector+0x30/0x30 [ 372.023053][ T1057] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 372.029276][ T1057] ret_from_fork+0x24/0x30 [ 372.035236][ T1057] Kernel Offset: disabled [ 372.039556][ T1057] Rebooting in 86400 seconds..