From: Mark Lord <lkml@rtr.ca>
To: Hans Verkuil <hverkuil@xs4all.nl>
Cc: ivtv-devel@ivtvdriver.org,
Linux Kernel <linux-kernel@vger.kernel.org>,
v4l-dvb-maintainer@linuxtv.org, g.liakhovetski@gmx.de,
video4linux-list@redhat.com
Subject: Re: [ivtv-devel] 2.6.29: ivtv-vbi.c: divide-by-zero in compress_sliced_buf()
Date: Mon, 30 Mar 2009 09:32:33 -0400 [thread overview]
Message-ID: <49D0C9F1.6020006@rtr.ca> (raw)
In-Reply-To: <49D0C936.8090407@rtr.ca>
Mark Lord wrote:
> Hans Verkuil wrote:
>> On Monday 30 March 2009 04:59:34 Mark Lord wrote:
>>> The changes to line_size in 2.6.29 now cause
>>> attempts to record from my PVR250 cards (MythTV)
>>> to die with a divide by zero error in ivtv-vbi.c.
>>>
>>> The value of "line_size" in compress_sliced_buf() is zero.
>>
>> Weird. That should never be zero. Can you mail me the ivtv
>> initialization log from dmesg? I need the bit between 'ivtv: Start
>> initialization' and 'ivtv: End initialization'.
> ..
>
> Sent.
..
For what it's worth, I did try patching that function to detect
a line_size of zero, and replace it on the fly with a more likely value.
This prevented the crash, but the recorded video was very dark, as if
colour controls had not be initialized. That could be another clue.
Cheers
next prev parent reply other threads:[~2009-03-30 13:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-30 2:59 2.6.29: ivtv-vbi.c: divide-by-zero in compress_sliced_buf() Mark Lord
2009-03-30 9:00 ` [ivtv-devel] " Hans Verkuil
2009-03-30 13:29 ` Mark Lord
2009-03-30 13:32 ` Mark Lord [this message]
2009-03-30 16:21 ` Mark Lord
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