From: Hans Petter Selasky <hselasky@c2i.net>
To: James Hogan <james@albanarts.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Mauro Carvalho Chehab <mchehab@infradead.org>,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [BUG] divide by zero in uvc_video_clock_update, v3.3-rc4
Date: Mon, 20 Feb 2012 20:19:32 +0100 [thread overview]
Message-ID: <201202202019.32756.hselasky@c2i.net> (raw)
In-Reply-To: <20120219234151.GA32005@balrog>
On Monday 20 February 2012 00:41:51 James Hogan wrote:
> Hi,
>
> I just tried v3.3-rc4 on an Acer Aspire One Happy 2 netbook. I happened
> to open the settings dialog box of kopete, which shows a view of the
> webcam. The kernel switched to a text console with a register dump (see
> below), indicating a divide error in uvc_video_clock_update.
>
> The IP is on 7482, a divide, presumably by %r11 (see objdump output below)
> which is 0 in the register dump. It appears to be the div_u64 in
> uvc_video_clock_update().
>
> I haven't tried any other recent kernel versions.
>
> My asm is rusty and I don't really have any time to look further into it.
> Is this enough to go on?
>
> Thanks
> James
Hi,
This is a known issue which has been fixed by:
http://git.linuxtv.org/pinchartl/uvcvideo.git/commit/5c97eb2eb9c45dad8825de7754ceb33699451978
--HPS
prev parent reply other threads:[~2012-02-20 19:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-19 23:41 James Hogan
2012-02-20 11:49 ` [GIT PULL FOR v3.3] uvcvideo divide by 0 fix Laurent Pinchart
2012-02-20 19:19 ` Hans Petter Selasky [this message]
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