Subject: Re: NULL mounts not quite buff in -current?
To: Brian C. Grayson <email@example.com>
From: Bill Studenmund <skippy@macro.Stanford.EDU>
Date: 01/12/1999 18:00:56
On Tue, 12 Jan 1999, Brian C. Grayson wrote:
> See also PR 5476 and 5239. Nullfs apparently can cause panics
> with "already locked" (as you submitted), "lockmgr: locking against
> myself", and "lockmgr: pid ..., not exclusive lock holder". So
> it appears that nullfs currently has at least one major lock bug,
> and probably more.
> 5239 has a patch that helps a lot in getting rid of "locking
> against myself", but didn't fix all the bugs. You might want to
> try it to see if it helps decrease the frequency of the panics.
The patch from 5239 seems to be in -current. I just checked in another
patch which should help a little in mounting (we might try to VOP_UNLOCK
an uninitialized pointer).
I'm not sure what's up with the problem here.