From: Christoph Hellwig Date: Mon, 19 Jan 2009 01:04:16 +0000 (+0100) Subject: xfs: sanity check attr fork size X-Git-Tag: v2.6.30-rc1~232^2~35^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2809f76afce05a73e08120f455107912aa519647;p=pandora-kernel.git xfs: sanity check attr fork size Recently we have quite a few kerneloops reports about dereferencing a NULL if_data in the attribute fork. From looking over the code this can only happen if we pass a 0 size argument to xfs_iformat_local. This implies some sort of corruption and in fact the only mailinglist report about this from earlier this year was after a powerfail presumably on a system with write cache and without barriers. Add a quick sanity check for the attr fork size in xfs_iformat to catch these early and without an oops. Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner --- Reading git-diff-tree failed