From: Vitaly Kuznetsov Date: Wed, 26 Jan 2022 13:18:04 +0000 (+0100) Subject: KVM: x86: Check .flags in kvm_cpuid_check_equal() too X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=033a3ea59a19df63edb4db6bfdbb357cd028258a;p=linux.git 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 Fixes: c6617c61e8fe ("KVM: x86: Partially allow KVM_SET_CPUID{,2} after KVM_RUN") Signed-off-by: Vitaly Kuznetsov Message-Id: <20220126131804.2839410-1-vkuznets@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini --- diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 8e2704b50e470..d0c9b10d448dc 100644 --- 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;