mov r/m, sreg generates #UD ins sreg is incorrect.
Signed-off-by: Gleb Natapov <[email protected]>
---
arch/x86/kvm/emulate.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 2cc9ef4..2df510b 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2122,12 +2122,11 @@ special_insn:
case 0x8c: { /* mov r/m, sreg */
struct kvm_segment segreg;
- if (c->modrm_reg <= 5)
+ if (c->modrm_reg <= VCPU_SREG_GS)
kvm_get_segment(ctxt->vcpu, &segreg, c->modrm_reg);
else {
- printk(KERN_INFO "0x8c: Invalid segreg in modrm byte
0x%02x\n",
- c->modrm);
- goto cannot_emulate;
+ kvm_queue_exception(ctxt->vcpu, UD_VECTOR);
+ goto done;
}
c->dst.val = segreg.selector;
break;
--
1.6.5
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