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Groups > linux.kernel > #1516193

[PATCH 3.12 69/72] Revert "fix minor infoleak in get_user_ex()"

From Jiri Slaby <jslaby@suse.cz>
Newsgroups linux.kernel
Subject [PATCH 3.12 69/72] Revert "fix minor infoleak in get_user_ex()"
Date 2016-11-07 14:40 +0100
Message-ID <sASjv-3Kx-11@gated-at.bofh.it> (permalink)
References <sASjv-3Kx-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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3.12-stable review patch.  If anyone has any objections, please let me know.

===============

This reverts commit d42924ab1ec523c0671f5560d51750996be31d3a which is
1c109fabbd51863475cd12ac206bdd249aee35af upstream.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/x86/include/asm/uaccess.h | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
index 01635e4e187a..5838fa911aa0 100644
--- a/arch/x86/include/asm/uaccess.h
+++ b/arch/x86/include/asm/uaccess.h
@@ -383,11 +383,7 @@ do {									\
 #define __get_user_asm_ex(x, addr, itype, rtype, ltype)			\
 	asm volatile("1:	mov"itype" %1,%"rtype"0\n"		\
 		     "2:\n"						\
-		     ".section .fixup,\"ax\"\n"				\
-                     "3:xor"itype" %"rtype"0,%"rtype"0\n"		\
-		     "  jmp 2b\n"					\
-		     ".previous\n"					\
-		     _ASM_EXTABLE_EX(1b, 3b)				\
+		     _ASM_EXTABLE_EX(1b, 2b)				\
 		     : ltype(x) : "m" (__m(addr)))
 
 #define __put_user_nocheck(x, ptr, size)			\
-- 
2.10.2

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[PATCH 3.12 69/72] Revert "fix minor infoleak in get_user_ex()" Jiri Slaby <jslaby@suse.cz> - 2016-11-07 14:40 +0100
  Re: [PATCH 3.12 69/72] Revert "fix minor infoleak in get_user_ex()" Linus Torvalds <torvalds@linux-foundation.org> - 2016-11-07 18:10 +0100
    Re: [PATCH 3.12 69/72] Revert "fix minor infoleak in get_user_ex()" Greg KH <greg@kroah.com> - 2016-11-08 11:40 +0100

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