gspca "scheduling while atomic" crash

gspca "scheduling while atomic" crash

[Brian Rogers]

I have the following device:
Bus 007 Device 002: ID 0c45:60fc Microdia PC Camera with Mic (SN9C105)

Whether I build 2.6.27-rc1 or merge the stable branch of 
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-next.git 
into my Intrepid kernel (2.6.26), the system will lock up when I try to 
get video from my webcam.

To see the kernel output, I do this in the console:
mplayer -ao aa -tv device=v4l2:width=640:height=480:fps=30 tv://

The result is a rapid stream of two alternating messages:
BUG: scheduling while atomic: swapper/0/0x8001???? (didn't get it all)
bad: scheduling from the idle thread!

During this the system doesn't respond to anything. It's a Core2 Duo 
running 64-bit Ubuntu Intrepid with 4GB of RAM. What other info should I 
provide to investigate this problem?

--
video4linux-list mailing list
Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe
https://www.redhat.com/mailman/listinfo/video4linux-list

Re: gspca "scheduling while atomic" crash

[Jean-Francois Moine]

On Sat, 2008-08-02 at 22:45 -0700, Brian Rogers wrote:
> I have the following device:
> Bus 007 Device 002: ID 0c45:60fc Microdia PC Camera with Mic (SN9C105)
> 
> Whether I build 2.6.27-rc1 or merge the stable branch of 
> git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-next.git 
> into my Intrepid kernel (2.6.26), the system will lock up when I try to 
> get video from my webcam.
> 
> To see the kernel output, I do this in the console:
> mplayer -ao aa -tv device=v4l2:width=640:height=480:fps=30 tv://
> 
> The result is a rapid stream of two alternating messages:
> BUG: scheduling while atomic: swapper/0/0x8001???? (didn't get it all)
> bad: scheduling from the idle thread!
> 
> During this the system doesn't respond to anything. It's a Core2 Duo 
> running 64-bit Ubuntu Intrepid with 4GB of RAM. What other info should I 
> provide to investigate this problem?

Hello Brian,

I think I saw the problem: usb_control_msg() is called at interrupt
level..

I hope to have a patch this morning.

Cheers.

-- 
Ken ar c'hentañ |             ** Breizh ha Linux atav! **
Jef             |               http://moinejf.free.fr/


--
video4linux-list mailing list
Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe
https://www.redhat.com/mailman/listinfo/video4linux-list