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Message-Id: <201202202019.32756.hselasky@c2i.net> Date: Mon, 20 Feb 2012 20:19:32 +0100 From: Hans Petter Selasky <hselasky@....net> To: James Hogan <james@...anarts.com> Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>, Mauro Carvalho Chehab <mchehab@...radead.org>, linux-media@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [BUG] divide by zero in uvc_video_clock_update, v3.3-rc4 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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