linux-kernel - [PATCH 017/104] KVM: x86 emulator: fix faulty check for two-byte opcode

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Date:	Mon, 17 Sep 2007 10:30:59 +0200
From:	Avi Kivity <avi@...ranet.com>
To:	kvm-devel@...ts.sourceforge.net
Cc:	linux-kernel@...r.kernel.org, Avi Kivity <avi@...ranet.com>
Subject: [PATCH 017/104] KVM: x86 emulator: fix faulty check for two-byte opcode

Right now, the bug is harmless as we never emulate one-byte 0xb6 or 0xb7.
But things may change.

Noted by the mysterious Gabriel C.

Signed-off-by: Avi Kivity <avi@...ranet.com>
---
 drivers/kvm/x86_emulate.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 82b4ea6..ef7518a 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -819,7 +819,7 @@ done_prefixes:
 	case DstReg:
 		dst.type = OP_REG;
 		if ((d & ByteOp)
-		    && !(twobyte_table && (b == 0xb6 || b == 0xb7))) {
+		    && !(twobyte && (b == 0xb6 || b == 0xb7))) {
 			dst.ptr = decode_register(modrm_reg, _regs,
 						  (rex_prefix == 0));
 			dst.val = *(u8 *) dst.ptr;
-- 
1.5.3

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