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Re: kern/42228: Kernel deadlock prevents further file system access
The following reply was made to PR kern/42228; it has been noted by GNATS.
From: Matthias Scheler <tron%zhadum.org.uk@localhost>
To: NetBSD GNATS <gnats-bugs%NetBSD.org@localhost>
Subject: Re: kern/42228: Kernel deadlock prevents further file system access
Date: Sat, 19 Jun 2010 23:21:40 +0100
On Tue, Jun 15, 2010 at 09:20:04PM +0000, Matthias Scheler wrote:
> I had two deadlocks today. It seems that having a lot of e-mails in
> "/var/spool/postfix" (> 3,000 in this case) triggers the problem
> quite easily. :-(
Another deadlock today with a NetBSD/amd64 5.1_RC3. I examined
multiple dozen of the processes which were stuck in "tstile" state.
Most of them were stuck in open(2), stat(2) or execve(2). I found
one "httpd" (Apache 2.2.15) process which was stuck in fcntl() trying
to lock a file (it had called cv_timedwait() from lf_advlock()) but
I'm not sure whether that was related.
Is there any way I can get more debugging information? How do I e.g.
find the vnode based on a stack trace?
Matthias Scheler http://zhadum.org.uk/
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