Re: Panic when loading vboxdrv module

On 07/25/16 03:27 PM, Jung-uk Kim wrote:
> On 07/25/16 03:13 PM, Randy Westlund wrote:
>> I'm running 12-CURRENT r303286 and virtualbox-ose-kmod-5.0.26.  I just
>> rebuilt the module, so I know they're in sync.  When I boot with
>> vboxdrv_load="YES" in /etc/loader.conf, I get this panic during boot:
>>
>>> panic: mutex Giant owned at /usr/src/sys/kern/kern_sync.c:406
>>> cpuid = 0
>>> KDB: stack backtrace:
>>> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b
>>> vpanic() at vpanic+0x182
>>> panic() at panic+0x43
>>> __mtx_assert() at __mtx_assert+0xd1
>>> mi_switch() at mi_switch+0x7b
>>> sleepq_switch() at sleepq_switch+0x7e
>>> sleepq_timedwait() at sleepq_timedwait+0x43
>>> rtR0SemEventWait() at rtR0SemEventWait+0x267
>>> supdrvGipCreate() at supdrvGipCreate+0x7f6
>>> supdrvInitDexExt() at supdrvInitDexExt+0x18f
>>> VBoxDrvFreeBSDModuleEvent() at VBoxDrvFreeBSDModuleEvent+0x49
>>> module_register_init() at module_register_init+0xb0
>>> mi_startup() at mi_startup+0x118
>>> btext() at btext+0x2c
>>> KDB: enter: panic
>>> [ thread pid 0 tid 100000 ]
>>> Stopped at      kdb_enter+0x3b: movq    $0,kdb_why
>>
>> I'm not sure whether this is a problem with the base system or the port,
>> but this happens every time I boot with the module enabled.
> 
> emulators/virtualbox-ose-kmod is causing the trouble and this problem is
> well known.  To work around it, remove WITNESS option from kernel
> configuration for now.

Oops, I meant INVARIANTS.  Anyway, it should be fixed in r419083.  I
understand you have a panic with aio(4) but that's a separate issue.

Jung-uk Kim