On Tue, Sep 21, 2010 at 10:30:18AM -0400, Alan Stern wrote:

On Tue, 21 Sep 2010, Jiri Kosina wrote:

quoted

I have just found out that it's actually CONFIG_USB_DYNAMIC_MINORS which 
makes the difference. When unset, the problem doesn't trigger, and 
usb_find_interface() always returns the proper interface. When 
CONFIG_USB_DYNAMIC_MINORS is being used, the oops happen.

I'll look into that.

Apparently the problem is that intf->minors doesn't get initialized 
properly.  This patch should fix it.  Everybody, please try it out.

Wow, what happened to suddenly cause this?  Nothing has changed here in
a long time.

wierd.

thanks,

greg k-h