[info] Using makefile-style concurrent boot in runlevel 2. [ 64.462235][ T26] audit: type=1800 audit(1554976165.900:21): pid=9115 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 64.499690][ T26] audit: type=1800 audit(1554976165.910:22): pid=9115 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.54' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 492.182595][ T1038] INFO: task syz-executor971:9265 blocked for more than 143 seconds. [ 492.190983][ T1038] Not tainted 5.1.0-rc4-next-20190411 #23 [ 492.197610][ T1038] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 492.207448][ T1038] syz-executor971 D28264 9265 9263 0x80000002 [ 492.220621][ T1038] Call Trace: [ 492.224073][ T1038] __schedule+0x817/0x1cc0 [ 492.228737][ T1038] ? __sched_text_start+0x8/0x8 [ 492.233704][ T1038] ? __mutex_lock+0x527/0x1310 [ 492.238558][ T1038] schedule+0x92/0x180 [ 492.242934][ T1038] schedule_preempt_disabled+0x13/0x20 [ 492.248398][ T1038] __mutex_lock+0x726/0x1310 [ 492.253107][ T1038] ? snd_seq_kernel_client_ctl+0xe5/0x170 [ 492.258950][ T1038] ? mutex_trylock+0x1e0/0x1e0 [ 492.264364][ T1038] ? snd_seq_oss_release+0xf5/0x150 [ 492.269777][ T1038] ? odev_release+0x54/0x80 [ 492.274663][ T1038] ? __fput+0x2e5/0x8d0 [ 492.278859][ T1038] ? task_work_run+0x14a/0x1c0 [ 492.283702][ T1038] ? do_exit+0x90a/0x2fa0 [ 492.288024][ T1038] ? do_group_exit+0x135/0x370 [ 492.293029][ T1038] ? __x64_sys_exit_group+0x44/0x50 [ 492.298509][ T1038] ? do_syscall_64+0x103/0x610 [ 492.303355][ T1038] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 492.309443][ T1038] ? kasan_check_write+0x14/0x20 [ 492.314500][ T1038] ? do_raw_spin_lock+0x12a/0x2e0 [ 492.319610][ T1038] mutex_lock_nested+0x16/0x20 [ 492.324567][ T1038] ? mutex_lock_nested+0x16/0x20 [ 492.329775][ T1038] snd_seq_kernel_client_ctl+0xe5/0x170 [ 492.335431][ T1038] snd_seq_oss_writeq_clear+0xe0/0x140 [ 492.340991][ T1038] ? snd_seq_oss_writeq_wakeup+0xc0/0xc0 [ 492.346853][ T1038] ? snd_seq_oss_timer_delete+0x5a/0x80 [ 492.352443][ T1038] ? create_port+0x250/0x250 [ 492.357032][ T1038] snd_seq_oss_writeq_delete+0x20/0x40 [ 492.362592][ T1038] free_devinfo+0x66/0xc0 [ 492.367081][ T1038] port_delete+0xe8/0x1c0 [ 492.371518][ T1038] snd_seq_delete_port+0x266/0x330 [ 492.376714][ T1038] snd_seq_ioctl_delete_port+0xba/0x190 [ 492.382258][ T1038] snd_seq_kernel_client_ctl+0x112/0x170 [ 492.387994][ T1038] ? snd_seq_info_done+0x30/0x30 [ 492.392959][ T1038] snd_seq_event_port_detach+0xba/0x100 [ 492.398517][ T1038] ? snd_seq_event_port_attach+0x220/0x220 [ 492.404479][ T1038] ? kasan_check_write+0x14/0x20 [ 492.409439][ T1038] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 492.415267][ T1038] delete_port+0x87/0xd0 [ 492.419647][ T1038] snd_seq_oss_release+0xf5/0x150 [ 492.424799][ T1038] odev_release+0x54/0x80 [ 492.429382][ T1038] __fput+0x2e5/0x8d0 [ 492.433505][ T1038] ____fput+0x16/0x20 [ 492.437488][ T1038] task_work_run+0x14a/0x1c0 [ 492.442069][ T1038] do_exit+0x90a/0x2fa0 [ 492.446460][ T1038] ? putname+0xef/0x130 [ 492.450620][ T1038] ? mm_update_next_owner+0x640/0x640 [ 492.456198][ T1038] ? do_sys_open+0x31d/0x5d0 [ 492.460944][ T1038] ? filp_open+0x80/0x80 [ 492.465297][ T1038] ? up_read+0x1e/0x180 [ 492.469446][ T1038] do_group_exit+0x135/0x370 [ 492.474280][ T1038] __x64_sys_exit_group+0x44/0x50 [ 492.479340][ T1038] do_syscall_64+0x103/0x610 [ 492.484262][ T1038] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 492.490233][ T1038] RIP: 0033:0x43ed98 [ 492.494521][ T1038] Code: Bad RIP value. [ 492.498667][ T1038] RSP: 002b:00007fff4f4de2a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 492.507222][ T1038] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed98 [ 492.515474][ T1038] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 492.523515][ T1038] RBP: 00000000004be5a8 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 492.531575][ T1038] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 492.539643][ T1038] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 492.547832][ T1038] INFO: lockdep is turned off. [ 492.552638][ T1038] NMI backtrace for cpu 1 [ 492.556960][ T1038] CPU: 1 PID: 1038 Comm: khungtaskd Not tainted 5.1.0-rc4-next-20190411 #23 [ 492.565735][ T1038] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 492.575862][ T1038] Call Trace: [ 492.579218][ T1038] dump_stack+0x172/0x1f0 [ 492.583532][ T1038] nmi_cpu_backtrace.cold+0x63/0xa4 [ 492.588854][ T1038] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 492.594591][ T1038] nmi_trigger_cpumask_backtrace+0x1be/0x236 [ 492.600570][ T1038] arch_trigger_cpumask_backtrace+0x14/0x20 [ 492.606471][ T1038] watchdog+0x9b7/0xec0 [ 492.610618][ T1038] kthread+0x357/0x430 [ 492.614749][ T1038] ? reset_hung_task_detector+0x30/0x30 [ 492.620290][ T1038] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 492.626519][ T1038] ret_from_fork+0x3a/0x50 [ 492.631466][ T1038] Sending NMI from CPU 1 to CPUs 0: [ 492.639451][ C0] NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0x2/0x10 [ 492.640381][ T1038] Kernel panic - not syncing: hung_task: blocked tasks [ 492.661898][ T1038] CPU: 1 PID: 1038 Comm: khungtaskd Not tainted 5.1.0-rc4-next-20190411 #23 [ 492.673672][ T1038] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 492.685750][ T1038] Call Trace: [ 492.689424][ T1038] dump_stack+0x172/0x1f0 [ 492.694471][ T1038] panic+0x2cb/0x72b [ 492.698401][ T1038] ? __warn_printk+0xf3/0xf3 [ 492.702983][ T1038] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 492.708707][ T1038] ? printk_safe_flush+0xf2/0x140 [ 492.713807][ T1038] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 492.720052][ T1038] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 492.725777][ T1038] ? nmi_trigger_cpumask_backtrace+0x1a7/0x236 [ 492.732142][ T1038] ? nmi_trigger_cpumask_backtrace+0x19e/0x236 [ 492.738472][ T1038] watchdog+0x9c8/0xec0 [ 492.742612][ T1038] kthread+0x357/0x430 [ 492.746719][ T1038] ? reset_hung_task_detector+0x30/0x30 [ 492.752326][ T1038] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 492.758566][ T1038] ret_from_fork+0x3a/0x50 [ 492.764245][ T1038] Kernel Offset: disabled [ 492.768611][ T1038] Rebooting in 86400 seconds..