kern/93942: panic: ufs_dirbad: bad dir

[Robert Watson]

The following reply was made to PR kern/93942; it has been noted by GNATS.

From: Robert Watson <rwatson at FreeBSD.org>
To: Yarema <yds at CoolRat.org>
Cc: FreeBSD-gnats-submit at freebsd.org, FreeBSD-current at freebsd.org,
	David Rhodus <drhodus at machdep.com>,
	Dennis Koegel <amf at hobbit.neveragain.de>,
	Martin Machacek <m at m3a.net>, Kris Kennaway <kris at obsecurity.org>,
	Dmitry Pryanishnikov <dmitry at atlantis.dp.ua>,
	Pawel Jakub Dawidek <pjd at freebsd.org>
Subject: Re: kern/93942: panic: ufs_dirbad: bad dir
Date: Fri, 3 Mar 2006 03:51:45 +0000 (GMT)

 On Thu, 2 Mar 2006, Yarema wrote:
 
 > options	UFS_EXTATTR
 > options	UFS_EXTATTR_AUTOSTART
 
 If you disable just UFS_EXTATTR_AUTOSTART, does the panic go away?  The 
 autostart routine relies on reading directory data (or at least, performing 
 lookups) during the mount process.  While it shouldn't be running on UFS2, it 
 could be that it is, and if something has changed in the mount process so that 
 reading directories that early is no longer functional, it could be that this 
 causes an incorrect reporting of on-disk corruption (i.e., it could be a data 
 structure initialization problem or the like).
 
 Robert N M Watson