[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.29' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 33.682504] audit: type=1400 audit(1587540914.383:8): avc: denied { execmem } for pid=6335 comm="syz-executor147" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 33.696118] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: (null) [ 33.713974] ------------[ cut here ]------------ [ 33.718873] WARNING: CPU: 0 PID: 6342 at lib/debugobjects.c:287 debug_print_object.cold+0xa7/0xdb executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.728164] Kernel panic - not syncing: panic_on_warn set ... [ 33.728164] [ 33.735550] CPU: 0 PID: 6342 Comm: syz-executor147 Not tainted 4.14.176-syzkaller #0 [ 33.743449] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.753137] Call Trace: [ 33.756036] dump_stack+0x13e/0x194 [ 33.760042] panic+0x1f9/0x42d [ 33.763254] ? add_taint.cold+0x16/0x16 [ 33.767293] ? debug_print_object.cold+0xa7/0xdb [ 33.772319] ? debug_print_object.cold+0xa7/0xdb [ 33.778223] __warn.cold+0x2f/0x30 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.781809] ? ist_end_non_atomic+0x10/0x10 [ 33.786509] ? debug_print_object.cold+0xa7/0xdb [ 33.791375] report_bug+0x20a/0x248 [ 33.795024] do_error_trap+0x195/0x2d0 [ 33.798953] ? math_error+0x2d0/0x2d0 [ 33.802780] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.807754] invalid_op+0x1b/0x40 [ 33.811231] RIP: 0010:debug_print_object.cold+0xa7/0xdb [ 33.816846] RSP: 0018:ffff888097ff79d0 EFLAGS: 00010082 [ 33.822220] RAX: 0000000000000061 RBX: 0000000000000005 RCX: 0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.829637] RDX: 0000000000000000 RSI: ffffffff86ac07e0 RDI: ffffed1012ffef30 [ 33.836924] RBP: ffffffff86abba60 R08: 0000000000000061 R09: 0000000000000000 [ 33.844205] R10: ffff888097a1ab80 R11: ffff888097a1a300 R12: 0000000000000000 [ 33.851621] R13: 0000000000000000 R14: 1ffff11012ffef44 R15: ffff888216294e30 [ 33.859027] debug_object_assert_init+0x22f/0x300 [ 33.863975] ? debug_object_init_on_stack+0x20/0x20 [ 33.869020] del_timer+0x5d/0xe0 [ 33.872412] ? trigger_dyntick_cpu.isra.0+0x180/0x180 [ 33.877747] try_to_grab_pending+0x261/0x610 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.882179] __cancel_work_timer+0x92/0x460 [ 33.886516] ? cancel_delayed_work+0x20/0x20 [ 33.891404] ? snd_pcm_stream_unlock+0x9c/0xc0 [ 33.896006] ? snd_pcm_stream_lock+0xa3/0xc0 [ 33.900438] ? lock_downgrade+0x6e0/0x6e0 [ 33.904604] ? snd_dummy_remove+0x40/0x40 [ 33.909093] pm_qos_remove_request+0x5e/0x460 [ 33.913709] ? snd_dummy_remove+0x40/0x40 [ 33.917874] snd_pcm_common_ioctl+0xa6d/0x1bf0 [ 33.922898] ? lock_downgrade+0x6e0/0x6e0 [ 33.927064] ? snd_pcm_status_user+0x130/0x130 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.931918] snd_pcm_ioctl+0x6d/0xa0 [ 33.935732] ? snd_pcm_common_ioctl+0x1bf0/0x1bf0 [ 33.940590] do_vfs_ioctl+0x75a/0xfe0 [ 33.944407] ? selinux_file_mprotect+0x5c0/0x5c0 [ 33.949355] ? ioctl_preallocate+0x1a0/0x1a0 [ 33.954222] ? rcu_read_lock_sched_held+0x10a/0x130 [ 33.959758] ? kmem_cache_free+0x23a/0x2b0 [ 33.964113] ? putname+0xcd/0x110 [ 33.967750] ? __fget_light+0x16a/0x1f0 [ 33.971838] ? security_file_ioctl+0x76/0xb0 [ 33.976259] ? security_file_ioctl+0x83/0xb0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.980694] SyS_ioctl+0x7f/0xb0 [ 33.984301] ? do_vfs_ioctl+0xfe0/0xfe0 [ 33.988379] do_syscall_64+0x1d5/0x640 [ 33.992462] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 33.997747] RIP: 0033:0x445109 [ 34.000941] RSP: 002b:00007ffead54b368 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 34.010059] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445109 [ 34.017599] RDX: 0000000000000000 RSI: 0000000000004112 RDI: 0000000000000004 [ 34.025056] RBP: 00000000006d0018 R08: 00000000004002e0 R09: 00000000004002e0 executing program executing program executing program executing program [ 34.032645] R10: 00000000004002e0 R11: 0000000000000246 R12: 00000000004022a0 [ 34.040262] R13: 0000000000402330 R14: 0000000000000000 R15: 0000000000000000 [ 34.049709] Kernel Offset: disabled [ 34.053593] Rebooting in 86400 seconds..