From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Mon, 28 May 2012 18:16:57 +0000 (-0400)
Subject: ext4: fix potential NULL dereference in ext4_free_inodes_counts()
X-Git-Tag: v3.5-rc1~16^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bb3d132a24cd8bf5e7773b2d9f9baa58b07a7dae;p=pandora-kernel.git

ext4: fix potential NULL dereference in ext4_free_inodes_counts()

The ext4_get_group_desc() function returns NULL on error, and
ext4_free_inodes_count() function dereferences it without checking.
There is a check on the next line, but it's too late.

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
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