From: Ben Hutchings <ben@decadent.org.uk>
Date: Sun, 7 Sep 2014 20:05:05 +0000 (+0100)
Subject: x86: Reject x32 executables if x32 ABI not supported
X-Git-Tag: fixes-against-v3.18-rc2~85^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0e6d3112a4e95d55cf6dca88f298d5f4b8f29bd1;p=pandora-kernel.git

x86: Reject x32 executables if x32 ABI not supported

It is currently possible to execve() an x32 executable on an x86_64
kernel that has only ia32 compat enabled.  However all its syscalls
will fail, even _exit().  This usually causes it to segfault.

Change the ELF compat architecture check so that x32 executables are
rejected if we don't support the x32 ABI.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Link: http://lkml.kernel.org/r/1410120305.6822.9.camel@decadent.org.uk
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

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