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authorMichael S. Tsirkin <mst@redhat.com>2010-10-27 20:03:43 +0200
committerAnthony Liguori <aliguori@us.ibm.com>2010-11-16 08:40:07 -0600
commit43849424cff82803011fad21074531a1101e514e (patch)
tree4229dabaade45f130fdb0c2022347ed4af16fd16 /net/tap.c
parent788954270d339b4b271e1a537a481e7068ba3591 (diff)
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tap: clear vhost_net backend on cleanup
Frontends calling tap_get_vhost_net get an invalid pointer after the peer backend has been deleted. Jason Wang <jasowang@redhat.com> reports this leading to a crash in ack_features when we remove the vhost-net bakend of a virtio nic. The fix is simply to clear the backend pointer. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'net/tap.c')
-rw-r--r--net/tap.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/tap.c b/net/tap.c
index 4afb314..937d942 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -279,6 +279,7 @@ static void tap_cleanup(VLANClientState *nc)
if (s->vhost_net) {
vhost_net_cleanup(s->vhost_net);
+ s->vhost_net = NULL;
}
qemu_purge_queued_packets(nc);