KVM: x86: Check .flags in kvm_cpuid_check_equal() too

kvm_cpuid_check_equal() checks for the (full) equality of the supplied CPUID data so .flags need to be checked too. Reported-by: Sean Christopherson <[email protected]> Fixes: c6617c6 ("KVM: x86: Partially allow KVM_SET_CPUID{,2} after KVM_RUN") Signed-off-by: Vitaly Kuznetsov <[email protected]> Message-Id: <[email protected]> Cc: [email protected] Signed-off-by: Paolo Bonzini <[email protected]>
kawasaki · Jan 26, 2022 · 033a3ea · 033a3ea
1 parent f7e5707
commit 033a3ea
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
@@ -133,6 +133,7 @@ static int kvm_cpuid_check_equal(struct kvm_vcpu *vcpu, struct kvm_cpuid_entry2
 		orig = &vcpu->arch.cpuid_entries[i];
 		if (e2[i].function != orig->function ||
 		    e2[i].index != orig->index ||
+		    e2[i].flags != orig->flags ||
 		    e2[i].eax != orig->eax || e2[i].ebx != orig->ebx ||
 		    e2[i].ecx != orig->ecx || e2[i].edx != orig->edx)
 			return -EINVAL;