lock up in 6.2 (procs massively stuck in Giant)

John Baldwin jhb at freebsd.org
Fri May 1 15:53:58 UTC 2009


On Thursday 30 April 2009 2:36:34 am pluknet wrote:
> Hi folks.
> 
> Today I got a new locking issue.
> This is the first time I got it, and it's merely reproduced.
> 
> The box has lost both remote connection and local access.
> No SIGINFO output on the local console even.
> Jumping in ddb> shows the next:
> 
> 1) first, this is a 8-way web server. No processes on runqueue except one 
httpd
> (i.e. ps shows R in its state):

You need to find who owns Giant and what that thread is doing.  You can try 
using 'show lock Giant' as well as 'show lockchain 11568'.

-- 
John Baldwin


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