From: Christoph Hellwig Date: Mon, 19 Jan 2009 01:04:16 +0000 (+0100) Subject: xfs: sanity check attr fork size X-Git-Tag: v2.6.29-rc3~44^2~2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b828d8c33867dd6479644c06500975570bfd525c;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