From: Andy Lutomirski <luto@amacapital.net>
Date: Wed, 25 Feb 2015 00:01:38 +0000 (-0800)
Subject: x86/ptrace: Remove checks for TIF_IA32 when changing CS and SS
X-Git-Tag: omap-for-v4.1/fixes-rc1~195^2~127
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08571f1ae327bfb631cb7171bde5ea605df626c6;p=pandora-kernel.git

x86/ptrace: Remove checks for TIF_IA32 when changing CS and SS

The ability for modified CS and/or SS to be useful has nothing
to do with TIF_IA32.  Similarly, if there's an exploit involving
changing CS or SS, it's exploitable with or without a TIF_IA32
check.

So just delete the check.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Link: http://lkml.kernel.org/r/71c7ab36456855d11ae07edd4945a7dfe80f9915.1424822291.git.luto@amacapital.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

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