From: Ralph Campbell <ralphc@pathscale.com>
Date: Tue, 18 Jul 2006 01:21:24 +0000 (-0700)
Subject: IB/ipath: ipath_skip_sge() can break if num_sge > 1
X-Git-Tag: v2.6.18-rc3~50
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=16c59419a09f0140a07a1828d6a45656265e07c7;p=pandora-kernel.git

IB/ipath: ipath_skip_sge() can break if num_sge > 1

ipath_skip_sge() doesn't exactly duplicate the side effects of
ipath_copy_sge() if num_sge > 1 since it doesn't decrement ss->num_sge.
This could result in the sg_list being accessed out of bounds.
Since ipath_skip_sge() is almost always called with num_sge == 1,
the original "optimization" is almost never used.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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