RE: gpsca kernel BUG when disconnecting camera while streaming with mmap (2.6.29-rc8)

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> Stian Skjelstad <stian@xxxxxxxx> wrote:
> 	[snip]
> > usb 2-2: USB disconnect, address 47
>> gspca: urb status: -108
>> gspca: urb status: -108
>> gspca: disconnect complete
>> BUG: unable to handle kernel NULL pointer dereference at 00000014
>> IP: [<c02bc98e>] usb_set_interface+0x1e/0x1e0
>> *pde = 00000000 
>> Oops: 0000 [#1] PREEMPT 
>	[snip]
>
>You did not tell which version of gspca you use. If it is the one of a
>kernel older than 2.6.30, you should update. Also, may this problem
>be reproduced?

I'm using the built in one. I'm going to upgrade to 2.6.29 very soon. And if
problem still persists, I can build gspca outside the kernel instead.

Yes, the error happens often, and the process attached to it stucks in
kernel mode, being unkillable (not even SIGKILL, followed be a SIGCONT
helps). I believe it stucks with ioctl DQUE call; I'll do a strace later
when I get the time available. 

The USB ports available are USB 1.1 only (old laptop).

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