[ 64.490811][ T26] audit: type=1800 audit(1568758485.032:27): pid=9954 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 64.528669][ T26] audit: type=1800 audit(1568758485.032:28): pid=9954 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. [ 65.498650][ T26] audit: type=1800 audit(1568758486.092:29): pid=9954 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 [ 65.519131][ T26] audit: type=1800 audit(1568758486.092:30): pid=9954 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 '10.128.0.72' (ECDSA) to the list of known hosts. syzkaller login: [ 186.786617][T10109] IPVS: ftp: loaded support on port[0] = 21 [ 186.830056][T10109] chnl_net:caif_netlink_parms(): no params data found [ 186.851874][T10109] bridge0: port 1(bridge_slave_0) entered blocking state [ 186.859290][T10109] bridge0: port 1(bridge_slave_0) entered disabled state [ 186.866822][T10109] device bridge_slave_0 entered promiscuous mode [ 186.874381][T10109] bridge0: port 2(bridge_slave_1) entered blocking state [ 186.881668][T10109] bridge0: port 2(bridge_slave_1) entered disabled state [ 186.889446][T10109] device bridge_slave_1 entered promiscuous mode [ 186.903113][T10109] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 186.913913][T10109] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 186.930084][T10109] team0: Port device team_slave_0 added [ 186.936512][T10109] team0: Port device team_slave_1 added [ 187.008903][T10109] device hsr_slave_0 entered promiscuous mode [ 187.077497][T10109] device hsr_slave_1 entered promiscuous mode [ 187.152754][T10109] bridge0: port 2(bridge_slave_1) entered blocking state [ 187.160063][T10109] bridge0: port 2(bridge_slave_1) entered forwarding state [ 187.167542][T10109] bridge0: port 1(bridge_slave_0) entered blocking state [ 187.174771][T10109] bridge0: port 1(bridge_slave_0) entered forwarding state [ 187.199373][T10109] 8021q: adding VLAN 0 to HW filter on device bond0 [ 187.209958][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 187.218425][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 187.226015][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 187.234440][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 187.244547][T10109] 8021q: adding VLAN 0 to HW filter on device team0 [ 187.253802][ T3505] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 187.262221][ T3505] bridge0: port 1(bridge_slave_0) entered blocking state [ 187.269434][ T3505] bridge0: port 1(bridge_slave_0) entered forwarding state [ 187.279142][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 187.287831][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 187.294872][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 187.309818][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 187.318326][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 187.329292][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 187.341549][T10109] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network executing program [ 187.352856][T10109] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 187.365354][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 187.373978][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 187.382538][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 187.397488][T10109] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 187.440801][ C1] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [ 347.337259][ T1065] INFO: task syz-executor875:10109 blocked for more than 143 seconds. [ 347.345480][ T1065] Not tainted 5.3.0-next-20190916 #0 [ 347.351388][ T1065] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 347.360099][ T1065] syz-executor875 D24496 10109 10108 0x00004000 [ 347.366424][ T1065] Call Trace: [ 347.369743][ T1065] __schedule+0x828/0x1c20 [ 347.374180][ T1065] ? __sched_text_start+0x8/0x8 [ 347.379057][ T1065] ? __kasan_check_read+0x11/0x20 [ 347.384083][ T1065] ? update_load_avg+0x1c6/0x1b10 [ 347.389129][ T1065] schedule+0xd9/0x260 [ 347.393196][ T1065] schedule_timeout+0x717/0xc50 [ 347.398063][ T1065] ? trace_hardirqs_on+0x67/0x240 [ 347.403098][ T1065] ? usleep_range+0x170/0x170 [ 347.407833][ T1065] ? __kasan_check_write+0x14/0x20 [ 347.413044][ T1065] ? lock_downgrade+0x920/0x920 [ 347.417921][ T1065] ? rwlock_bug.part.0+0x90/0x90 [ 347.422873][ T1065] ? wait_for_completion+0x9e/0x440 [ 347.428090][ T1065] ? trace_hardirqs_on+0x67/0x240 [ 347.433123][ T1065] ? __kasan_check_read+0x11/0x20 [ 347.438183][ T1065] wait_for_completion+0x29c/0x440 [ 347.443293][ T1065] ? wait_for_completion_interruptible+0x470/0x470 [ 347.449828][ T1065] ? preempt_schedule_common+0x63/0xe0 [ 347.455278][ T1065] ? wake_up_q+0xf0/0xf0 [ 347.459563][ T1065] ? __rcu_read_unlock+0x220/0x6b0 [ 347.464682][ T1065] __flush_work+0x508/0xa60 [ 347.469300][ T1065] ? __kernel_text_address+0xd/0x40 [ 347.474800][ T1065] ? queue_delayed_work_on+0x210/0x210 [ 347.480374][ T1065] ? init_pwq+0x360/0x360 [ 347.484805][ T1065] ? __cancel_work_timer+0xc4/0x540 [ 347.490068][ T1065] ? trace_hardirqs_off+0x62/0x240 [ 347.495191][ T1065] ? trace_hardirqs_on+0x67/0x240 [ 347.500607][ T1065] __cancel_work_timer+0x3d9/0x540 [ 347.505751][ T1065] ? mod_delayed_work_on+0x200/0x200 [ 347.511154][ T1065] ? debug_object_active_state+0x28a/0x350 [ 347.517057][ T1065] ? __kasan_check_read+0x11/0x20 [ 347.522087][ T1065] ? __kasan_check_write+0x14/0x20 [ 347.527350][ T1065] ? lock_downgrade+0x920/0x920 [ 347.532218][ T1065] ? mark_held_locks+0xf0/0xf0 [ 347.536971][ T1065] cancel_delayed_work_sync+0x1b/0x20 [ 347.542390][ T1065] tls_sw_cancel_work_tx+0x68/0x80 [ 347.547616][ T1065] tls_sk_proto_close+0x4c9/0x9c0 [ 347.552654][ T1065] ? lock_acquire+0x190/0x410 [ 347.557382][ T1065] ? wait_on_pending_writer+0x420/0x420 [ 347.562929][ T1065] ? ip_mc_drop_socket+0x211/0x270 [ 347.568063][ T1065] ? down_write+0xdf/0x150 [ 347.572473][ T1065] inet_release+0xed/0x200 [ 347.577024][ T1065] inet6_release+0x53/0x80 [ 347.581522][ T1065] __sock_release+0xce/0x280 [ 347.586115][ T1065] sock_close+0x1e/0x30 [ 347.590341][ T1065] __fput+0x2ff/0x890 [ 347.594379][ T1065] ? __sock_release+0x280/0x280 [ 347.599264][ T1065] ____fput+0x16/0x20 [ 347.603246][ T1065] task_work_run+0x145/0x1c0 [ 347.607880][ T1065] exit_to_usermode_loop+0x316/0x380 [ 347.613168][ T1065] do_syscall_64+0x65f/0x760 [ 347.617882][ T1065] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 347.623893][ T1065] RIP: 0033:0x401f40 [ 347.627833][ T1065] 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 [ 347.647837][ T1065] RSP: 002b:00007ffe0b2a50a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 347.656239][ T1065] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000401f40 [ 347.664244][ T1065] RDX: ffffffffffffffc1 RSI: 1201000000003618 RDI: 0000000000000004 [ 347.672254][ T1065] RBP: 00007ffe0b2a50c0 R08: 0000000000000000 R09: 1201000000003618 [ 347.680252][ T1065] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 347.688256][ T1065] R13: 0000000000403170 R14: 0000000000000000 R15: 0000000000000000 [ 347.696229][ T1065] INFO: lockdep is turned off. [ 347.701541][ T1065] NMI backtrace for cpu 0 [ 347.705937][ T1065] CPU: 0 PID: 1065 Comm: khungtaskd Not tainted 5.3.0-next-20190916 #0 [ 347.714260][ T1065] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 347.724306][ T1065] Call Trace: [ 347.727598][ T1065] dump_stack+0x172/0x1f0 [ 347.731913][ T1065] nmi_cpu_backtrace.cold+0x70/0xb2 [ 347.737095][ T1065] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 347.743336][ T1065] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 347.748960][ T1065] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 347.755006][ T1065] arch_trigger_cpumask_backtrace+0x14/0x20 [ 347.760894][ T1065] watchdog+0xc99/0x1360 [ 347.765119][ T1065] kthread+0x361/0x430 [ 347.769185][ T1065] ? reset_hung_task_detector+0x30/0x30 [ 347.777752][ T1065] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 347.783974][ T1065] ret_from_fork+0x24/0x30 [ 347.788423][ T1065] Sending NMI from CPU 0 to CPUs 1: [ 347.793665][ C1] NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 [ 347.794619][ T1065] Kernel panic - not syncing: hung_task: blocked tasks [ 347.809178][ T1065] CPU: 0 PID: 1065 Comm: khungtaskd Not tainted 5.3.0-next-20190916 #0 [ 347.817399][ T1065] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 347.827453][ T1065] Call Trace: [ 347.830727][ T1065] dump_stack+0x172/0x1f0 [ 347.835212][ T1065] panic+0x2dc/0x755 [ 347.839099][ T1065] ? add_taint.cold+0x16/0x16 [ 347.843758][ T1065] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 347.849466][ T1065] ? printk_safe_flush+0xf2/0x140 [ 347.854483][ T1065] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 347.860718][ T1065] ? nmi_trigger_cpumask_backtrace+0x224/0x28b [ 347.866862][ T1065] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 347.873002][ T1065] watchdog+0xcaa/0x1360 [ 347.877241][ T1065] kthread+0x361/0x430 [ 347.881480][ T1065] ? reset_hung_task_detector+0x30/0x30 [ 347.887007][ T1065] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 347.893255][ T1065] ret_from_fork+0x24/0x30 [ 347.899576][ T1065] Kernel Offset: disabled [ 347.903925][ T1065] Rebooting in 86400 seconds..