On Sun, Aug 19, 2007 at 03:29:46PM +0100, Andrew Doran wrote: > I haven't seen this. Can you get a backtrace from the thread? If you have > LOCKDEBUG, 'show lock' on the wchan should display where it's held. Hmm, I had rebooted the machine in the meantime and tested other kernel changes - and now I can't reproduce it :-( Martin