From: <gregkh@linuxfoundation.org>
To: jslaby@suse.cz, alexander.levin@verizon.com, bp@alien8.de,
brgerst@gmail.com, dvlasenk@redhat.com,
gregkh@linuxfoundation.org, hpa@zytor.com, jpoimboe@redhat.com,
luto@kernel.org, mingo@kernel.org, peterz@infradead.org,
tglx@linutronix.de, torvalds@linux-foundation.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "objtool: Fix IRET's opcode" has been added to the 4.9-stable tree
Date: Mon, 03 Jul 2017 12:02:49 +0200 [thread overview]
Message-ID: <1499076169189247@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
objtool: Fix IRET's opcode
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
objtool-fix-iret-s-opcode.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From foo@baz Mon Jul 3 11:54:13 CEST 2017
From: Jiri Slaby <jslaby@suse.cz>
Date: Wed, 18 Jan 2017 14:29:21 +0100
Subject: objtool: Fix IRET's opcode
From: Jiri Slaby <jslaby@suse.cz>
[ Upstream commit b5b46c4740aed1538544f0fa849c5b76c7823469 ]
The IRET opcode is 0xcf according to the Intel manual and also to objdump of my
vmlinux:
1ea8: 48 cf iretq
Fix the opcode in arch_decode_instruction().
The previous value (0xc5) seems to correspond to LDS.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170118132921.19319-1-jslaby@suse.cz
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/objtool/arch/x86/decode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -150,9 +150,9 @@ int arch_decode_instruction(struct elf *
*type = INSN_RETURN;
break;
- case 0xc5: /* iret */
case 0xca: /* retf */
case 0xcb: /* retf */
+ case 0xcf: /* iret */
*type = INSN_CONTEXT_SWITCH;
break;
Patches currently in stable-queue which might be from jslaby@suse.cz are
queue-4.9/objtool-fix-iret-s-opcode.patch
reply other threads:[~2017-07-03 10:02 UTC|newest]
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