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Date: Sun, 20 Nov 2022 15:28:38 +0800 From: Ziyang Xuan <william.xuanziyang@...wei.com> To: <davem@...emloft.net>, <yoshfuji@...ux-ipv6.org>, <dsahern@...nel.org>, <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>, <netdev@...r.kernel.org> CC: <linux-kernel@...r.kernel.org> Subject: [PATCH net] ipv4: Fix error return code in fib_table_insert() In fib_table_insert(), if the alias was already inserted, but node not exist, the error code should be set before return from error handling path. Fixes: a6c76c17df02 ("ipv4: Notify route after insertion to the routing table") Signed-off-by: Ziyang Xuan <william.xuanziyang@...wei.com> --- net/ipv4/fib_trie.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 452ff177e4da..f26d5ac117d6 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -1381,8 +1381,10 @@ int fib_table_insert(struct net *net, struct fib_table *tb, /* The alias was already inserted, so the node must exist. */ l = l ? l : fib_find_node(t, &tp, key); - if (WARN_ON_ONCE(!l)) + if (WARN_ON_ONCE(!l)) { + err = -ENOENT; goto out_free_new_fa; + } if (fib_find_alias(&l->leaf, new_fa->fa_slen, 0, 0, tb->tb_id, true) == new_fa) { -- 2.25.1
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