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[PATCH v2 1/7] vdpa: Skip the maps not in the iova tree
From: |
Eugenio Pérez |
Subject: |
[PATCH v2 1/7] vdpa: Skip the maps not in the iova tree |
Date: |
Tue, 23 Aug 2022 20:20:02 +0200 |
Next patch will skip the registering of dma maps that the vdpa device
rejects in the iova tree. We need to consider that here or we cause a
SIGSEGV accessing result.
Reported-by: Lei Yang <leiyang@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
---
hw/virtio/vhost-vdpa.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 3ff9ce3501..983d3697b0 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -289,6 +289,10 @@ static void vhost_vdpa_listener_region_del(MemoryListener
*listener,
};
result = vhost_iova_tree_find_iova(v->iova_tree, &mem_region);
+ if (!result) {
+ /* The memory listener map wasn't mapped */
+ return;
+ }
iova = result->iova;
vhost_iova_tree_remove(v->iova_tree, result);
}
--
2.31.1
- [PATCH v2 0/7] vDPA shadow virtqueue iova tree fixes., Eugenio Pérez, 2022/08/23
- [PATCH v2 4/7] vdpa: Remove SVQ vring from iova_tree at shutdown, Eugenio Pérez, 2022/08/23
- [PATCH v2 1/7] vdpa: Skip the maps not in the iova tree,
Eugenio Pérez <=
- [PATCH v2 2/7] vdpa: do not save failed dma maps in SVQ iova tree, Eugenio Pérez, 2022/08/23
- [PATCH v2 3/7] util: accept iova_tree_remove_parameter by value, Eugenio Pérez, 2022/08/23
- [PATCH v2 5/7] vdpa: Make SVQ vring unmapping return void, Eugenio Pérez, 2022/08/23
- [PATCH v2 7/7] vdpa: Use ring hwaddr at vhost_vdpa_svq_unmap_ring, Eugenio Pérez, 2022/08/23
- [PATCH v2 6/7] vhost: Always store new kick fd on vhost_svq_set_svq_kick_fd, Eugenio Pérez, 2022/08/23