System Panic

Jahilliya jahilliya at
Fri Mar 10 01:48:09 UTC 2006

On 3/10/06, Kris Kennaway <kris at> wrote:
> On Fri, Mar 10, 2006 at 08:38:35AM +0800, Jahilliya wrote:
> > Hey,
> >
> > Got this error on FreeBSD 6.0-RELEASE-p5
> >
> > panic: lockmgr: locking against myself
> Try updating to 6.1, many of these panics have been fixed.

It's going to be for a production server and 6.1 is still under development
so I'd rather not at this time

I did however find out what caused the panic, it was my friend unionfs. I
had a unionfs mount setup for the system distfiles to mount over the
distfiles directory in one of my ports.

I did a simple test: mount_unionfs /tmp/dir1 /tmp/dir2
touch /tmp/dir2/file
mv /tmp/dir2/file /tmp/dir2/file1

The system immediately panicked with the exact same error...

I'll move on up to 6.1 when it's stable :)

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