linux-ext4 - Re: ext3 lockdep warning in 2.6.25-rc6

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sat, 22 Mar 2008 18:38:47 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Erez Zadok <ezk@...sunysb.edu>
Cc:	sct@...hat.com, akpm@...ux-foundation.org, adilger@...sterfs.com,
	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: ext3 lockdep warning in 2.6.25-rc6

On Sat, 2008-03-22 at 10:37 -0400, Erez Zadok wrote:
> I was building a kernel using "make -j 4" inside a unionfs, mounted on top
> of ext3.  The kernel is vanilla 2.6.25-rc6 plus unionfs patches.  At some
> point I forced a cache flush using "echo 3 > /proc/sys/vm/drop_caches" and I
> got the lockdep warning below.  Note that unionfs doesn't appear to be
> involved in this lockdep warning at all, so I suspect this is probably an
> issue between jbd and ext3 directly.

Known issue, drop_caches isn't production quality.

--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html