Re: Crash with 2.6.27-rc6 with iwlwifi

[Marcel Holtmann <holtmann@linux.intel.com>]

Hi Johannes,

> > so since a few 2.6.27 kernels I haven an issue when using my 4965  
> > wireless card. So the machine in question is an X61 and when enabling  
> > WiFi and Bluetooth at the same time it will freeze hard after a few  
> > minutes. It seems activating Bluetooth has something to do with it,  
> > but I have been using the machine for Bluetooth qualification testing  
> > (with WiFi disabled) and everything works fine.
> > 
> > However I tried to reproduce it without Bluetooth enabled, it didn't  
> > show or I didn't wait long enough. Once I started bluetoothd it showed  
> > within a few minutes.
> > 
> > So the best I got was the attached screenshot of an oops. It is  
> > clearly the iwlwifi driver crashing here and killing the machine, but  
> > I have no idea why.
> 
> That looks like the use-after-free BUG_ON I've been getting with a 5k
> card, do you have sl*b debugging enabled?

I have CONFIG_SLUB_DEBUG=y in this kernel. Including all sorts of kernel
debugging features enabled. Anything else I would need to give better
feedback?

Regards

Marcel