From: Szilveszter Ördög <slipszi@gmail.com>
Date: Fri, 6 Aug 2010 01:26:38 +0000 (+0800)
Subject: crypto: hash - Fix handling of small unaligned buffers
X-Git-Tag: v2.6.36-rc4~83^2~3
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=23a75eee070f1370bee803a34f285cf81eb5f331;p=pandora-kernel.git

crypto: hash - Fix handling of small unaligned buffers

If a scatterwalk chain contains an entry with an unaligned offset then
hash_walk_next() will cut off the next step at the next alignment point.

However, if the entry ends before the next alignment point then we a loop,
which leads to a kernel oops.

Fix this by checking whether the next aligment point is before the end of the
current entry.

Signed-off-by: Szilveszter Ördög <slipszi@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

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