I just had a repeat of this dump with the same details and Call Trace. It seemed to happen when the machine was (probably) idle which I suppose fits with a watchdog bug.
The other symptoms that I mentioned did not occur this time. ael -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org