KVM: x86: fix KVM_SET_XCRS loop

The loop was always using 0 as the index.  This means that
any rubbish after the first element of the array went undetected.
It seems reasonable to assume that no KVM userspace did that.

Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 296154956399..6d16fc530246 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3064,9 +3064,9 @@ static int kvm_vcpu_ioctl_x86_set_xcrs(struct kvm_vcpu *vcpu,
 
         for (i = 0; i < guest_xcrs->nr_xcrs; i++)
                 /* Only support XCR0 currently */
-                if (guest_xcrs->xcrs[0].xcr == XCR_XFEATURE_ENABLED_MASK) {
+                if (guest_xcrs->xcrs[i].xcr == XCR_XFEATURE_ENABLED_MASK) {
                         r = __kvm_set_xcr(vcpu, XCR_XFEATURE_ENABLED_MASK,
-                                guest_xcrs->xcrs[0].value);
+                                guest_xcrs->xcrs[i].value);
                         break;
                 }
         if (r)