From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 18 Aug 2016 23:34:00 +0000 (-0400)
Subject: cris: buggered copy_from_user/copy_to_user/clear_user
X-Git-Tag: v3.2.84~46
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a1599d819d3dd1a50d1c11bc9cb8e5d751086f64;p=pandora-kernel.git

cris: buggered copy_from_user/copy_to_user/clear_user

commit eb47e0293baaa3044022059f1fa9ff474bfe35cb upstream.

* copy_from_user() on access_ok() failure ought to zero the destination
* none of those primitives should skip the access_ok() check in case of
small constant size.

Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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