linux-kernel - 2.6.23-git18: ext2_check_page: bad entry in directory

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Message-ID: <20071024131540.GV32058@shadowen.org>
Date:	Wed, 24 Oct 2007 14:15:40 +0100
From:	Andy Whitcroft <andyw@...ibm.com>
To:	linux-kernel@...r.kernel.org, Jan Kara <jack@...e.cz>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
Subject: 2.6.23-git18: ext2_check_page: bad entry in directory

Seems that we are now getting strange errors mounting an ext2 root
filesystem under 2.6.23-git18:

  EXT2-fs error (device sda1): ext2_check_page: bad entry in directory #2:
  rec_len is smaller than minimal - offset=0, inode=0, rec_len=0,
  name_len=0

This seems to be occuring consistently since 2.6.23-git18.  I have been
back and rerun a -git17 job to confirm its not visible at that level.
This bug is expressing itself in 2.6.23-rc1 also.

I am suspicious of this commit in the -git17 -> -git18 block:

  commit 89910cccb8fec0c1140d33a743e72a712efd4f05
  Author: Jan Kara <jack@...e.cz>
  Date:   Sun Oct 21 16:41:40 2007 -0700

      ext2: avoid rec_len overflow with 64KB block size

/me goes debug this a bit more.

Jan?

-apw
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