[Qemu-devel] [PULL 58/59] vring: Better error handling if num is too large

[Stefan Hajnoczi]

From: Fam Zheng <address@hidden>

To be more consistent inside this function.

Signed-off-by: Fam Zheng <address@hidden>
Reviewed-by: Paolo Bonzini <address@hidden>
Message-id: address@hidden
---
 hw/virtio/dataplane/vring.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/virtio/dataplane/vring.c b/hw/virtio/dataplane/vring.c
index 67cb2b8..372706a 100644
--- a/hw/virtio/dataplane/vring.c
+++ b/hw/virtio/dataplane/vring.c
@@ -181,7 +181,8 @@ static int get_desc(Vring *vring, VirtQueueElement *elem,
 
     /* Stop for now if there are not enough iovecs available. */
     if (*num >= VIRTQUEUE_MAX_SIZE) {
-        return -ENOBUFS;
+        error_report("Invalid SG num: %u", *num);
+        return -EFAULT;
     }
 
     /* TODO handle non-contiguous memory across region boundaries */
-- 
1.9.3