linux-kernel - [PATCH] tcp: fix error return code in tcp_xmit_probe

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Message-Id: <20220414015802.101877-1-wh_bin@126.com>
Date:   Wed, 13 Apr 2022 21:58:02 -0400
From:   Hongbin Wang <wh_bin@....com>
To:     edumazet@...gle.com, davem@...emloft.net, yoshfuji@...ux-ipv6.org,
        dsahern@...nel.org, kuba@...nel.org, pabeni@...hat.com
Cc:     ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        kafai@...com, songliubraving@...com, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        bpf@...r.kernel.org
Subject: [PATCH] tcp: fix error return code in tcp_xmit_probe_skb

When alloc_skb failed, should return ENOMEM

Signed-off-by: Hongbin Wang <wh_bin@....com>
---
 net/ipv4/tcp_output.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index c221f3bce975..b97c85814d9c 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -3996,7 +3996,7 @@ static int tcp_xmit_probe_skb(struct sock *sk, int urgent, int mib)
 	skb = alloc_skb(MAX_TCP_HEADER,
 			sk_gfp_mask(sk, GFP_ATOMIC | __GFP_NOWARN));
 	if (!skb)
-		return -1;
+		return -ENOMEM;
 
 	/* Reserve space for headers and set control bits. */
 	skb_reserve(skb, MAX_TCP_HEADER);
-- 
2.25.1