Re: [BUG] divide by zero in uvc_video_clock_update, v3.3-rc4

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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
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