From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Wed, 13 Jan 2010 19:44:43 +0000 (+0100)
Subject: [S390] zcrypt: add sanity check before copy_from_user()
X-Git-Tag: v2.6.33-rc5~70^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0648f5659e2d51659bd8f42ff30f456775c3c12d;p=pandora-kernel.git

[S390] zcrypt: add sanity check before copy_from_user()

It's not obvious that copy_from_user() is called with a sane length
parameter here. Even though it currently seems to be correct better
add a check to prevent stack corruption / exploits.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

Reading git-diff-tree failed