40 lines
1.3 KiB
Diff
40 lines
1.3 KiB
Diff
From a498bc3ae687778dad2f8161ff17532432df0c1c Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma@redhat.com>
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Date: Tue, 23 Aug 2022 20:20:02 +0200
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Subject: [PATCH] vdpa: Skip the maps not in the iova tree
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Next patch will skip the registering of dma maps that the vdpa device
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rejects in the iova tree. We need to consider that here or we cause a
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SIGSEGV accessing result.
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Reported-by: Lei Yang <leiyang@redhat.com>
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Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
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Acked-by: Jason Wang <jasowang@redhat.com>
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Signed-off-by: Jason Wang <jasowang@redhat.com>
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Signed-off-by: fangyi <eric.fangyi@huawei.com>
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---
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hw/virtio/vhost-vdpa.c | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
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index d0cf7a0745..c551665f5d 100644
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--- a/hw/virtio/vhost-vdpa.c
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+++ b/hw/virtio/vhost-vdpa.c
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@@ -291,6 +291,10 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener,
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};
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result = vhost_iova_tree_find_iova(v->iova_tree, &mem_region);
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+ if (!result) {
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+ /* The memory listener map wasn't mapped */
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+ return;
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+ }
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iova = result->iova;
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vhost_iova_tree_remove(v->iova_tree, result);
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}
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--
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2.27.0
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