From: mkloppstech@freenet.de
Message-Id: <200012062150.WAA01033@john.epistle>
Subject: Ext2-fs error
To: linux-kernel@vger.kernel.org
Date: Wed, 6 Dec 2000 22:50:43 +0100 (CET)
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Sender: linux-kernel-owner@vger.kernel.org

The EXT2-fs errors I recently reported for test11 seem to be gone with
test12-pre5. At least I couldn't reproduce the error, neither with
overcommit_memory turned on nor off; maybe the error was due to
turning on write cache of my hard disk.

The error was a wrong reading of directory lengths and inode nnumbers:
The file system seemed to read the inode numbers not as supposed to do:
xxxx|xxxx|xxxx|xxxx|xxxx
     rrrr

but like this:
xxxx|xxxx|xxxx|xxxx|xxxx
 rrr_r
The message was:

Dec  4 13:04:19 john kernel: EXT2-fs error (device ide0(3,3)): ext2_readdir: bad entry in directory #280596: rec_len % 4 != 0 - offset=0, inode=68583844, rec_len=13758, name_len=0
Dec  4 15:38:07 john kernel: EXT2-fs error (device ide0(3,3)): ext2_readdir: bad entry in directory #280596: rec_len % 4 != 0 - offset=0, inode=33188, rec_len=3591, name_len=0
Dec  4 15:38:07 john kernel: EXT2-fs error (device ide0(3,3)): ext2_readdir: bad entry in directory #659481: directory entry across
blocks - offset=0, inode=33188, rec_len=2536, name_len=0
Dec  4 15:39:38 john kernel: EXT2-fs error (device ide0(3,3)): ext2_readdir: bad entry in directory #280596: rec_len % 4 != 0 - offset=0, inode=33188, rec_len=3591, name_len=0
Dec  4 15:39:38 john kernel: EXT2-fs error (device ide0(3,3)): ext2_readdir: bad entry in directory #659481: directory entry across
blocks - offset=0, inode=33188, rec_len=2536, name_len=0

Mirko Kloppstech
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