This is a note to let you know that I've just added the patch titled neighbour: delete redundant judgment statements to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: neighbour-delete-redundant-judgment-statements.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit efd3665f5511367db84446f7d8a7a69dbd3ee8d6 Author: Li Zetao <lizetao1@xxxxxxxxxx> Date: Thu Aug 22 12:32:45 2024 +0800 neighbour: delete redundant judgment statements [ Upstream commit c25bdd2ac8cf7da70a226f1a66cdce7af15ff86f ] The initial value of err is -ENOBUFS, and err is guaranteed to be less than 0 before all goto errout. Therefore, on the error path of errout, there is no need to repeatedly judge that err is less than 0, and delete redundant judgments to make the code more concise. Signed-off-by: Li Zetao <lizetao1@xxxxxxxxxx> Reviewed-by: Petr Machata <petrm@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Stable-dep-of: becbd5850c03 ("neighbour: use RCU protection in __neigh_notify()") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 4dfe17f1a76aa..3e007cbadb707 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -3382,8 +3382,7 @@ static void __neigh_notify(struct neighbour *n, int type, int flags, rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); return; errout: - if (err < 0) - rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); + rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); } void neigh_app_ns(struct neighbour *n)