[PATCH 4.14 079/115] kvm: nVMX: Fix fault vector for VMX operation at CPL > 0

From: Greg Kroah-Hartman
Date: Thu Sep 13 2018 - 09:46:31 EST


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

------------------

From: Jim Mattson <jmattson@xxxxxxxxxx>

[ Upstream commit 36090bf43a6b835a42f515cb515ff6fa293a25fe ]

The fault that should be raised for a privilege level violation is #GP
rather than #UD.

Fixes: 727ba748e110b4 ("kvm: nVMX: Enforce cpl=0 for VMX instructions")
Signed-off-by: Jim Mattson <jmattson@xxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/kvm/vmx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -7590,7 +7590,7 @@ static int handle_vmon(struct kvm_vcpu *

/* CPL=0 must be checked manually. */
if (vmx_get_cpl(vcpu)) {
- kvm_queue_exception(vcpu, UD_VECTOR);
+ kvm_inject_gp(vcpu, 0);
return 1;
}

@@ -7654,7 +7654,7 @@ static int handle_vmon(struct kvm_vcpu *
static int nested_vmx_check_permission(struct kvm_vcpu *vcpu)
{
if (vmx_get_cpl(vcpu)) {
- kvm_queue_exception(vcpu, UD_VECTOR);
+ kvm_inject_gp(vcpu, 0);
return 0;
}