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Date:      Fri, 25 Jan 2002 18:50:08 -0600
From:      Doug Swarin <doug@staff.texas.net>
To:        Robert Watson <rwatson@freebsd.org>
Cc:        freebsd-current@freebsd.org, bright@mu.org, sobomax@freebsd.org, kris@obsecurity.org, re@freebsd.org
Subject:   Re: Panic in ufs_dirbad()
Message-ID:  <20020125185007.A64746@staff.texas.net>
In-Reply-To: <Pine.NEB.3.96L.1020125194709.80112G-100000@fledge.watson.org>; from rwatson@freebsd.org on Fri, Jan 25, 2002 at 07:48:09PM -0500
References:  <20020125184512.A64502@staff.texas.net> <Pine.NEB.3.96L.1020125194709.80112G-100000@fledge.watson.org>

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On Fri, Jan 25, 2002 at 07:48:09PM -0500, Robert Watson wrote:
> 
> On Fri, 25 Jan 2002, Doug Swarin wrote:
> 
> > I have actually seen this panic very recently on -STABLE. Matt Dillon
> > suspected an issue with the RAID controller I was using (aac) after some
> > debugging work. 
> > 
> > I am still waiting on the results of diagnostic testing on the RAID
> > controller, but I just wanted to offer an additional data point. 
> > 
> > I have attached dmesg and some of the results of our debugging session
> > below. The panic occurred during heavy file create/delete activity. I
> > referred to PR kern/13150, which may or may not be related. 
> > 
> > We determined that *ep in ufs_lookup contained garbage (from a file
> > name). ep->d_name contained file data. 
> 
> Alternatively, if it's only recent -STABLE, maybe it's something to do
> with the recent enabling of UFS_DIRHASH in -STABLE by default?  If so,
> this might require immediate action before 4.5-RELEASE goes out the door
> (very, very soon).  Has anyone managed to track it down anymore?

I do not have UFS_DIRHASH enabled in my kernel.

-- 
Doug Swarin, Programmer
doug (at) texas dot net

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