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kvm: x86: fix kvm_apic_has_events to check for NULL pointer
author
Paolo Bonzini
<pbonzini@redhat.com>
Sat, 30 May 2015 12:31:24 +0000
(14:31 +0200)
committer
Paolo Bonzini
<pbonzini@redhat.com>
Thu, 4 Jun 2015 08:16:17 +0000
(10:16 +0200)
Malicious (or egregiously buggy) userspace can trigger it, but it
should never happen in normal operation.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/lapic.h
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diff --git
a/arch/x86/kvm/lapic.h
b/arch/x86/kvm/lapic.h
index 71b150cae5f95f42d337057b9b7ed164a58d35ad..9d8fcde52027123fe867559b7deff5ffd67bc080 100644
(file)
--- 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;
}
static inline bool kvm_lowest_prio_delivery(struct kvm_lapic_irq *irq)