The error code is missing in this code scenario, add the error code '-EINVAL' to the return value 'err'. Eliminate the follow smatch warning: net/core/rtnetlink.c:4834 rtnl_bridge_notify() warn: missing error code 'err'. Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx> Signed-off-by: Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx> --- net/core/rtnetlink.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 714d5fa..3e84279 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -4842,8 +4842,10 @@ static int rtnl_bridge_notify(struct net_device *dev) if (err < 0) goto errout; - if (!skb->len) + if (!skb->len) { + err = -EINVAL; goto errout; + } rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); return 0; -- 1.8.3.1