Subject: Re: deadlocks, many processes in sleepq_block
To: None <tech-kern@NetBSD.org>
From: Anthony Mallet <email@example.com>
Date: 09/20/2007 18:14:20
Andrew Doran writes:
| Sounds like a classic deadlock :-)
Good to know :)
| Can you get backtraces from the hung LWPs - not processes? Do 'ps/l' which
| will show you all the LWPs in the system, then one by one pass the LWP
| addresses of the hung threads to 't/a'.
I'll do that and report the results.
| If you are running amd64 you'll need to compile the kernel with
| -fno-omit-frame-pointer. LOCKDEBUG and DIAGNOSTIC will help to track down
| the problem.
It's an i386 kernel. DIAGNOSTIC didn't reveal anything, I'll recompile
with LOCKDEBUG enabled.