-CURRENT spontaneously rebooting when using X

Chris Hedley cbh-freebsd-current at groups.chrishedley.com
Thu Jan 26 07:49:53 PST 2006

On Tue, 24 Jan 2006, Chris Hedley wrote:
> On Tue, 24 Jan 2006, John Baldwin wrote:
>> On Tuesday 24 January 2006 05:03, Chris Hedley wrote:
>>> On Mon, 23 Jan 2006, John Baldwin wrote:
>>>> It's a bug, but you can try this workaround:
>>> Unfortunately that caused my system to lock up at (presumably) the same
>>> point it was crashing before; testing it a couple of times produced the
>>> same result.  Is there anything you want me to do to try to extract some
>>> more details from it?
>> Ah, sorry then.  The bug is that some thread has gone to sleep while 
>> holding a
>> mutex and now another thread wants that mutex.  Try turning on witness as 
>> it
>> will tell you when the first thread goes to sleep (the real bug).
> I've done that, and (perhaps unhelpfully) ran cvsup before rebuilding, so one 
> or the other has fixed my problem somehow.  When I'm feeling brave enough 
> I'll turn off witness again and see if the problem returns; I'll report back 
> if it does...

Just to close this one down, I turned off witness again and the problem 
didn't come back, so it looks like I must've just cvsuped the kernel at a 
bad time.  It feels like it's quite solid now, whatever I chuck at it.



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