From: Jan Kara <jack@suse.cz>
Date: Fri, 31 May 2013 23:38:56 +0000 (-0400)
Subject: ext4: fix data offset overflow in ext4_xattr_fiemap() on 32-bit archs
X-Git-Tag: v3.2.49~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5b1b5af5a1191196cc564bfab9ac5e1a6b8d08f3;p=pandora-kernel.git

ext4: fix data offset overflow in ext4_xattr_fiemap() on 32-bit archs

commit a60697f411eb365fb09e639e6f183fe33d1eb796 upstream.

On 32-bit architectures with 32-bit sector_t computation of data offset
in ext4_xattr_fiemap() can overflow resulting in reporting bogus data
location. Fix the problem by typing block number to proper type before
shifting.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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