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libvhost-user: Report descriptor index on panic 

We want to report the index of the descriptor,
not its pointer.

Fixes: 7b2e5c65f4 ("contrib: add libvhost-user")
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200723171935.18535-1-philmd@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Cc: qemu-stable@nongnu.org
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2020-07-23 19:19:35 +02:00 committed by Michael S. Tsirkin
parent 4fdecf0543
commit 8fe9805c73
1 changed files with 2 additions and 2 deletions
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4
contrib/libvhost-user/libvhost-user.c
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@ -2074,7 +2074,7 @@ virtqueue_get_head(VuDev *dev, VuVirtq *vq,
/* If their number is silly, that's a fatal mistake. */
if (*head >= vq->vring.num) {
vu_panic(dev, "Guest says index %u is available", head);
vu_panic(dev, "Guest says index %u is available", *head);
return false;
}
@ -2133,7 +2133,7 @@ virtqueue_read_next_desc(VuDev *dev, struct vring_desc *desc,
smp_wmb();
if (*next >= max) {
vu_panic(dev, "Desc next is %u", next);
vu_panic(dev, "Desc next is %u", *next);
return VIRTQUEUE_READ_DESC_ERROR;
}