From: Eugene Teo <eteo@redhat.com>
Subject: Re: [patch 02/23] ext: Avoid printk floods in the face of directory
 corruption (CVE-2008-3528)
Date: Mon, 10 Nov 2008 10:42:20 +0800
Message-ID: <49179F8C.4050103@redhat.com>
References: <20081107224818.593212310@mini.kroah.org> <20081107231516.GC1108@kroah.com>
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Cc: linux-kernel@vger.kernel.org, stable@kernel.org,
	Justin Forbes <jmforbes@linuxtx.org>,
	Zwane Mwaikambo <zwane@arm.linux.org.uk>,
	"Theodore Ts'o" <tytso@mit.edu>,
	Randy Dunlap <rdunlap@xenotime.net>,
	Dave Jones <davej@redhat.com>,
	Chuck Wolber <chuckw@quantumlinux.com>,
	Chris Wedgwood <reviews@ml.cw.f00f.org>,
	Michael Krufky <mkrufky@linuxtv.org>,
	Chuck Ebbert <cebbert@redhat.com>,
	Domenico Andreoli <cavokz@gmail.com>, Willy Tarreau <w@1wt.eu>,
	Rodrigo Rubira Branco <rbranco@la.checkpoint.com>,
	Jake Edge <jake@lwn.net>, torvalds@linux-foundation.org,
	akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk,
	ext4 development <linux-ext4@vger.kernel.org>,
	Eric Sandeen <sandeen@redhat.com>,
	Eugene Teo <eugeneteo@kernel.sg>
To: Greg KH <gregkh@suse.de>
In-Reply-To: <20081107231516.GC1108@kroah.com>
Sender: linux-ext4-owner@vger.kernel.org

Greg KH wrote:

Please change the description of the bug to:

"A very large directory with many read failures (either due to storage
problems, or due to invalid size & blocks from corruption) will generate
a printk storm as the filesystem continues to try to read all the
blocks. This flood of messages can tie up the box until it is complete -
which may be a very long time, especially for very large corrupted values.

This is fixed by only reporting the corruption once each time we try to
read the directory."

http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.27.y.git;a=commitdiff;h=bd39597

Thanks, Eugene