48 lines
1.6 KiB
Diff
48 lines
1.6 KiB
Diff
From 0000000000000000000000000000000000000000 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: Thu, 12 May 2022 19:57:47 +0200
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Subject: [PATCH] vhost: Fix element in vhost_svq_add failure
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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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Coverity rightly reports that is not free in that case.
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Fixes: Coverity CID 1487559
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Fixes: 100890f7ca ("vhost: Shadow virtqueue buffers forwarding")
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Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
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Message-Id: <20220512175747.142058-7-eperezma@redhat.com>
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Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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(cherry-picked from commit 5181db132b587754dda3a520eec923b87a65bbb7)
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Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
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---
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hw/virtio/vhost-shadow-virtqueue.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/hw/virtio/vhost-shadow-virtqueue.c b/hw/virtio/vhost-shadow-virtqueue.c
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index 31fc50907d..06d0bb39d9 100644
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--- a/hw/virtio/vhost-shadow-virtqueue.c
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+++ b/hw/virtio/vhost-shadow-virtqueue.c
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@@ -199,11 +199,19 @@ static bool vhost_svq_add_split(VhostShadowVirtqueue *svq,
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return true;
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}
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+/**
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+ * Add an element to a SVQ.
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+ *
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+ * The caller must check that there is enough slots for the new element. It
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+ * takes ownership of the element: In case of failure, it is free and the SVQ
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+ * is considered broken.
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+ */
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static bool vhost_svq_add(VhostShadowVirtqueue *svq, VirtQueueElement *elem)
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{
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unsigned qemu_head;
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bool ok = vhost_svq_add_split(svq, elem, &qemu_head);
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if (unlikely(!ok)) {
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+ g_free(elem);
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return false;
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}
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