KVM: x86: fix wbinvd_dirty_mask use-after-free

[pandora-kernel.git] / arch / x86 / kvm / x86.c

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4ae334a..fc73c12 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6406,11 +6406,13 @@ void kvm_put_guest_fpu(struct kvm_vcpu *vcpu)
 
 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
 {
+       void *wbinvd_dirty_mask = vcpu->arch.wbinvd_dirty_mask;
+
        kvmclock_reset(vcpu);
 
-       free_cpumask_var(vcpu->arch.wbinvd_dirty_mask);
        fx_free(vcpu);
        kvm_x86_ops->vcpu_free(vcpu);
+       free_cpumask_var(wbinvd_dirty_mask);
 }
 
 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,