From b828d8c33867dd6479644c06500975570bfd525c Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 19 Jan 2009 02:04:16 +0100 Subject: [PATCH] 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-format-patch failed