From: David Daney <ddaney@caviumnetworks.com>
Date: Tue, 2 Nov 2010 00:43:07 +0000 (-0700)
Subject: MIPS: Don't clobber personality high bits.
X-Git-Tag: v2.6.37-rc7~25^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1c0d52b9b5e6ca277c13d6fece9c34ed3159423d;p=pandora-kernel.git

MIPS: Don't clobber personality high bits.

The high bits of current->personality carry settings that we don't want to
clobber on each exec.  Only clobber them if the lower bits that indicate
either PER_LINUX or PER_LINUX32 are invalid.

The clobbering prevents us from using useful bits like ADDR_NO_RANDOMIZE.

Reported-by: Camm Maguire <camm@maguirefamily.org>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Camm Maguire <camm@maguirefamily.org>
Patchwork: https://patchwork.linux-mips.org/patch/1750/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

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