alpha/105134: 'panic: lockmgr: thread ... not exclusive lock owner' on SMP Alpha EV6 machine

[Kevin Thompson]

The following reply was made to PR alpha/105134; it has been noted by GNATS.

From: "Kevin Thompson" <antiduh at csh.rit.edu>
To: bug-followup at freebsd.org, antiduh at csh.rit.edu
Cc:  
Subject: Re: alpha/105134: 'panic: lockmgr: thread ... not exclusive lock owner' on SMP Alpha EV6 machine
Date: Mon, 06 Nov 2006 20:14:36 -0500

 Okay, so the machine has made me a liar. It died again while doing heavy  
 I/O and CPU (recursive fetching a website while building apache22). It  
 would seem that the the failures are much harder to reproduce with  
 PREEMPTION off, but I guess still a problem. Maybe turning SMP off would  
 be the final kicker.
 
 I might be willing to provide access to this machine and its serial  
 console if it would be of any help in debugging the problem.
 
 --Kevin