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From: Michael Krufky <mkrufky@linuxtv.org>
To: Nish Aravamudan <nish.aravamudan@gmail.com>
Cc: Alex Riesen <raa.lkml@gmail.com>,
	video4linux-list@redhat.com, Martin.vGagern@gmx.net,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Mauro Carvalho Chehab <mchehab@infradead.org>,
	v4l-dvb-maintainer@linuxtv.org,
	Alex Riesen <fork0@users.sourceforge.net>,
	Andrew Morton <akpm@osdl.org>
Subject: Re: [v4l-dvb-maintainer] Re: oops in bttv
Date: Wed, 19 Jul 2006 13:19:22 -0400	[thread overview]
Message-ID: <44BE699A.5000106@linuxtv.org> (raw)
In-Reply-To: <29495f1d0607191009r736ed327y797e69ac4915e1e7@mail.gmail.com>

Nish Aravamudan wrote:
> On 7/17/06, Alex Riesen <raa.lkml@gmail.com> wrote:
>> On 7/15/06, Mauro Carvalho Chehab <mchehab@infradead.org> wrote:
>> > > What I did was to call settings of the flashplayer and press on the
>> > > webcam symbol there. The system didn't crash, just this oops:
>> > >
>> > > BUG: unable to handle kernel NULL pointer dereference at virtual
>> address 0000006
>> > > 5
>> > Hmm... Are you using it on what machine? It might be related to an
>> > improper handling at compat32 module.
>>
>> 32bit. PIV, 2Gb, highmem on.
> 
> Is this the same bug as http://bugzilla.kernel.org/show_bug.cgi?id=6869?

It LOOKS the same to me...  I have tried to reproduce this OOPS
unsuccessfully, but it seems to be happening for many other users.

I can't imagine why I am unable to reproduce it.

Hopefully Andrew will pull from Mauro's v4l-dvb.git for the new
changesets before he releases the next -mm...

The sanity checking cleanups have already been pushed up there:

http://www.kernel.org/git/?p=linux/kernel/git/mchehab/v4l-dvb.git;a=commitdiff;h=9c2f8a385c0bc40bf1f96edac32cc648d3a052fc;hp=0c445baf0daee379295adea8478278c0719e9c35

You might notice a tragic flaw in the previous code...
bttv_register_video was checking the return value on a void ...  Maybe
we'll get some better debug output after this patch gets out.

Cheers,

Michael Krufky


  reply	other threads:[~2006-07-19 17:20 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-07-11 20:49 oops in bttv Alex Riesen
2006-07-12  9:44 ` Frederik Deweerdt
2006-07-12 17:54   ` Alex Riesen
2006-07-15 11:29 ` Mauro Carvalho Chehab
2006-07-17 13:34   ` Alex Riesen
2006-07-19 17:09     ` Nish Aravamudan
2006-07-19 17:19       ` Michael Krufky [this message]
2006-07-20  3:21         ` [v4l-dvb-maintainer] " Mauro Carvalho Chehab

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