From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 15 Aug 2013 05:53:38 +0000 (+0300)
Subject: xfs: check for underflow in xfs_iformat_fork()
X-Git-Tag: v3.12-rc1~80^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0d0ab120d1fe90fcc73a2bfff3945bea636b3025;p=pandora-kernel.git

xfs: check for underflow in xfs_iformat_fork()

The "di_size" variable comes from the disk and it's a signed 64 bit.
We check the upper limit but we should check for negative numbers as
well.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
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