This is a note to let you know that I've just added the patch titled neighbour: delete redundant judgment statements to the 5.15-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-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit aa8d7d2415da6a2fc8f8f325a237852dbe452ab5 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 6f3bd1a4ec8ca..7fffbe0424342 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -3387,8 +3387,7 @@ 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)