Message ID | 20200616110849.32685-2-cascardo@canonical.com |
---|---|
State | New |
Headers | show |
Series | [SRU,B/D] UBUNTU: SAUCE: nbd_genl_status: null check for nla_nest_start | expand |
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 42e1fee6ab9f..f63821be6021 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -2159,6 +2159,12 @@ static int nbd_genl_status(struct sk_buff *skb, struct genl_info *info) } dev_list = nla_nest_start(reply, NBD_ATTR_DEVICE_LIST); + if (!dev_list) { + nlmsg_free(reply); + ret = -EMSGSIZE; + goto out; + } + if (index == -1) { ret = idr_for_each(&nbd_index_idr, &status_cb, reply); if (ret) {