From a498bc3ae687778dad2f8161ff17532432df0c1c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= Date: Tue, 23 Aug 2022 20:20:02 +0200 Subject: [PATCH] vdpa: Skip the maps not in the iova tree MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Eugenio Pérez Acked-by: Jason Wang Signed-off-by: Jason Wang Signed-off-by: fangyi --- 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 d0cf7a0745..c551665f5d 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -291,6 +291,10 @@ 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); } -- 2.27.0