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-rw-r--r--arch/arm64/kvm/vgic/vgic-its.c5
-rw-r--r--arch/x86/kvm/svm/sev.c16
2 files changed, 14 insertions, 7 deletions
diff --git a/arch/arm64/kvm/vgic/vgic-its.c b/arch/arm64/kvm/vgic/vgic-its.c
index e2764d0ffa9f..28a93074eca1 100644
--- a/arch/arm64/kvm/vgic/vgic-its.c
+++ b/arch/arm64/kvm/vgic/vgic-its.c
@@ -468,6 +468,9 @@ static int its_sync_lpi_pending_table(struct kvm_vcpu *vcpu)
}
irq = vgic_get_irq(vcpu->kvm, NULL, intids[i]);
+ if (!irq)
+ continue;
+
raw_spin_lock_irqsave(&irq->irq_lock, flags);
irq->pending_latch = pendmask & (1U << bit_nr);
vgic_queue_irq_unlock(vcpu->kvm, irq, flags);
@@ -1432,6 +1435,8 @@ static int vgic_its_cmd_handle_movall(struct kvm *kvm, struct vgic_its *its,
for (i = 0; i < irq_count; i++) {
irq = vgic_get_irq(kvm, NULL, intids[i]);
+ if (!irq)
+ continue;
update_affinity(irq, vcpu2);
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index f760106c31f8..a132547fcfb5 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -1975,20 +1975,22 @@ int sev_mem_enc_register_region(struct kvm *kvm,
goto e_free;
}
- region->uaddr = range->addr;
- region->size = range->size;
-
- list_add_tail(&region->list, &sev->regions_list);
- mutex_unlock(&kvm->lock);
-
/*
* The guest may change the memory encryption attribute from C=0 -> C=1
* or vice versa for this memory range. Lets make sure caches are
* flushed to ensure that guest data gets written into memory with
- * correct C-bit.
+ * correct C-bit. Note, this must be done before dropping kvm->lock,
+ * as region and its array of pages can be freed by a different task
+ * once kvm->lock is released.
*/
sev_clflush_pages(region->pages, region->npages);
+ region->uaddr = range->addr;
+ region->size = range->size;
+
+ list_add_tail(&region->list, &sev->regions_list);
+ mutex_unlock(&kvm->lock);
+
return ret;
e_free: