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Date: Fri, 25 Nov 2016 10:05:06 +0800 From: fgao@...ai8.com To: davem@...emloft.net, jasowang@...hat.com, edumazet@...gle.com, netdev@...r.kernel.org, gfree.wind@...il.com Cc: Gao Feng <fgao@...ai8.com> Subject: [PATCH net 1/1] driver: macvtap: Unregister netdev rx_handler if macvtap_newlink fails From: Gao Feng <fgao@...ai8.com> The macvtap_newlink registers the netdev rx_handler firstly, but it does not unregister the handler if macvlan_common_newlink failed. Signed-off-by: Gao Feng <fgao@...ai8.com> --- drivers/net/macvtap.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 070e329..bceca28 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -491,7 +491,13 @@ static int macvtap_newlink(struct net *src_net, /* Don't put anything that may fail after macvlan_common_newlink * because we can't undo what it does. */ - return macvlan_common_newlink(src_net, dev, tb, data); + err = macvlan_common_newlink(src_net, dev, tb, data); + if (err) { + netdev_rx_handler_unregister(dev); + return err; + } + + return 0; } static void macvtap_dellink(struct net_device *dev, -- 1.9.1
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