Re: [2.6.35] usb 2.0 em28xx kernel panic general protection fault:0000 [#1] SMP RIP: 0010:[<ffffffffa004fbc5>] [<ffffffffa004fbc5>] em28xx_isoc_copy_vbi+0x62e/0x812[em28xx]

From: Mauro Carvalho Chehab
Date: Wed Aug 11 2010 - 12:46:35 EST

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In reply to: Pete Eberlein: "Re: [2.6.35] usb 2.0 em28xx kernel panic general protection fault:0000 [#1] SMP RIP: 0010:[<ffffffffa004fbc5>] [<ffffffffa004fbc5>] em28xx_isoc_copy_vbi+0x62e/0x812 [em28xx]"
Next in thread: Devin Heitmueller: "Re: [2.6.35] usb 2.0 em28xx kernel panic general protection fault: 0000 [#1] SMP RIP: 0010:[<ffffffffa004fbc5>] [<ffffffffa004fbc5>] em28xx_isoc_copy_vbi+0x62e/0x812 [em28xx]"
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Em 11-08-2010 12:58, Pete Eberlein escreveu:
> On Wed, 2010-08-11 at 09:25 +0200, Sander Eikelenboom wrote:
>> Hello Devin,
>>
>> Yes it's completely reproducible for a change:
>>
>> ffmpeg -f video4linux -r 25 -s 720x576 -i /dev/video0 out.flv
>> gave an error:
>
> Use -f video4linux2.
>
> The -f video4linux option uses the old video4linux1 API. I have seen
> similar strange behavior when I used that ffmpeg option with a v4l2
> driver I am developing. Also, ffmpeg does not use libv4l.

Still, we have a bug to fix. The driver shouldn't generating a PANIC if accessed
via V4L1 API.

Cheers,
Mauro.
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