targclose doesn't return
Scott Long
scottl at samsco.org
Tue Apr 3 22:26:53 UTC 2007
Actually, I think it's a wildly incorrect use of the clone API. I'll
take a look at in the in next few days and try to commit something that
works.
Scott
Scott Long wrote:
> My guess is that the kninit() in targopen isn't being cleaned up from in
> targclose. I'm not terribly familiar in how the knote API works,
> though.
>
> Scott
>
>
> Matthew Jacob wrote:
>> Yeah- I've seen this too.
>>
>> On 4/3/07, Alex Dupre <ale at freebsd.org> wrote:
>>> Scott Long wrote:
>>> > Are there any other console messages from the targ driver? Can you
>>> > turn on CAMDEBUG and send us the trace of what is going on?
>>>
>>> CAMDEBUG is already on, but simply opening/closing the targ device,
>>> without sending any ioctl to enable it, shouldn't produce any CAM
>>> message. I traced the kernel thread and I found that it doesn't return
>>> from the destroy_devl() function: csw->d_purge is NULL and
>>> dev->si_threadcount is '1'. The thread enters the following block
>>> (kern_conf.c, row 690) and never exits.
>>>
>>>
>>> while (dev->si_threadcount != 0) {
>>> /* Use unique dummy wait ident */
>>> msleep(&csw, &devmtx, PRIBIO, "devdrn", hz / 10);
>>> }
>>>
>>>
>>> --
>>> Alex Dupre
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>
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