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[4/4] KVM: arm64: vgic: Undo work in failed ITS restores

Message ID 20220425185534.57011-5-ricarkol@google.com (mailing list archive)
State New, archived
Headers show
Series KVM: arm64: vgic: Misc ITS fixes | expand

Commit Message

Ricardo Koller April 25, 2022, 6:55 p.m. UTC 
Failed ITS restores should clean up all state restored until the
failure. There is some cleanup present for this situation, but it's not
complete. Add the missing free's.

Signed-off-by: Ricardo Koller <ricarkol@google.com>
---
 arch/arm64/kvm/vgic/vgic-its.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm64/kvm/vgic/vgic-its.c b/arch/arm64/kvm/vgic/vgic-its.c
index 4ece649e2493..200ac59edaf9 100644
--- a/arch/arm64/kvm/vgic/vgic-its.c
+++ b/arch/arm64/kvm/vgic/vgic-its.c
@@ -2229,8 +2229,10 @@  static int vgic_its_restore_ite(struct vgic_its *its, u32 event_id,
 		vcpu = kvm_get_vcpu(kvm, collection->target_addr);
 
 	irq = vgic_add_lpi(kvm, lpi_id, vcpu);
-	if (IS_ERR(irq))
+	if (IS_ERR(irq)) {
+		its_free_ite(kvm, ite);
 		return PTR_ERR(irq);
+	}
 	ite->irq = irq;
 
 	return offset;
@@ -2498,6 +2500,9 @@  static int vgic_its_restore_device_tables(struct vgic_its *its)
 	if (ret > 0)
 		ret = 0;
 
+	if (ret < 0)
+		vgic_its_free_device_list(its->dev->kvm, its);
+
 	return ret;
 }
 
@@ -2624,6 +2629,9 @@  static int vgic_its_restore_collection_table(struct vgic_its *its)
 		read += cte_esz;
 	}
 
+	if (ret < 0)
+		vgic_its_free_collection_list(its->dev->kvm, its);
+
 	return ret;
 }
 
@@ -2655,7 +2663,10 @@  static int vgic_its_restore_tables_v0(struct vgic_its *its)
 	if (ret)
 		return ret;
 
-	return vgic_its_restore_device_tables(its);
+	ret = vgic_its_restore_device_tables(its);
+	if (ret)
+		vgic_its_free_collection_list(its->dev->kvm, its);
+	return ret;
 }
 
 static int vgic_its_commit_v0(struct vgic_its *its)