From: Dan Rosenberg <drosenberg@vsecurity.com>
Date: Tue, 26 Jul 2011 00:11:53 +0000 (-0700)
Subject: xtensa: prevent arbitrary read in ptrace
X-Git-Tag: v3.1-rc1~241^2~116
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0d0138ebe24b94065580bd2601f8bb7eb6152f56;p=pandora-kernel.git

xtensa: prevent arbitrary read in ptrace

Prevent an arbitrary kernel read.  Check the user pointer with access_ok()
before copying data in.

[akpm@linux-foundation.org: s/EIO/EFAULT/]
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Cc: Christian Zankel <chris@zankel.net>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

Reading git-diff-tree failed