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authorPaolo Bonzini <pbonzini@redhat.com>2015-05-30 14:31:24 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-08-16 20:52:26 -0700
commitf627ab0afcd983b3cb5f6d47c5006fd14cfc9a01 (patch)
tree812858d6ab93cf7ab14417f62cd518ea7d3e949e
parent52124831a34a52764a2ce76f1ba0703ecf9d220a (diff)
kvm: x86: fix kvm_apic_has_events to check for NULL pointer
commit ce40cd3fc7fa40a6119e5fe6c0f2bc0eb4541009 upstream. Malicious (or egregiously buggy) userspace can trigger it, but it should never happen in normal operation. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Wang Kai <morgan.wang@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--arch/x86/kvm/lapic.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
index 9d28383fc1e7..c4ea87eedf8a 100644
--- a/arch/x86/kvm/lapic.h
+++ b/arch/x86/kvm/lapic.h
@@ -150,7 +150,7 @@ static inline bool kvm_apic_vid_enabled(struct kvm *kvm)
static inline bool kvm_apic_has_events(struct kvm_vcpu *vcpu)
{
- return vcpu->arch.apic->pending_events;
+ return kvm_vcpu_has_lapic(vcpu) && vcpu->arch.apic->pending_events;
}
bool kvm_apic_pending_eoi(struct kvm_vcpu *vcpu, int vector);