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objtool: Fix IRET's opcode

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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 <[email protected]>
Acked-by: Josh Poimboeuf <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Brian Gerst <[email protected]>
Cc: Denys Vlasenko <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Jiri Slaby 2017-01-18 14:29:21 +01:00 • committed by Ingo Molnar
commit b5b46c4740
1 changed files with 1 additions and 1 deletions
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2
tools/objtool/arch/x86/decode.c
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@ -150,9 +150,9 @@ int arch_decode_instruction(struct elf *elf, struct section *sec,
*type = INSN_RETURN;
break;
case 0xc5: /* iret */
case 0xca: /* retf */
case 0xcb: /* retf */
case 0xcf: /* iret */
*type = INSN_CONTEXT_SWITCH;
break;