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From: Jia-Ju Bai <baijiaju1990@gmail.com>
To: alex.aring@gmail.com, stefan@datenfreihafen.org,
	davem@davemloft.net, kuba@kernel.org
Cc: linux-wpan@vger.kernel.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, Jia-Ju Bai <baijiaju1990@gmail.com>
Subject: [PATCH] net: ieee802154: fix error return code of dgram_sendmsg()
Date: Mon,  8 Mar 2021 01:31:06 -0800	[thread overview]
Message-ID: <20210308093106.9748-1-baijiaju1990@gmail.com> (raw)

When sock_alloc_send_skb() returns NULL to skb, no error return code of
dgram_sendmsg() is assigned.
To fix this bug, err is assigned with -ENOMEM in this case.

Fixes: 78f821b64826 ("ieee802154: socket: put handling into one file")
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
---
 net/ieee802154/socket.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
index a45a0401adc5..a750b37c7e73 100644
--- a/net/ieee802154/socket.c
+++ b/net/ieee802154/socket.c
@@ -642,8 +642,10 @@ static int dgram_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 	skb = sock_alloc_send_skb(sk, hlen + tlen + size,
 				  msg->msg_flags & MSG_DONTWAIT,
 				  &err);
-	if (!skb)
+	if (!skb) {
+		err = -ENOMEM;
 		goto out_dev;
+	}
 
 	skb_reserve(skb, hlen);
 
-- 
2.17.1


             reply	other threads:[~2021-03-08  9:32 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-08  9:31 Jia-Ju Bai [this message]
2021-03-08 10:19 ` Heiner Kallweit
2021-03-08 12:18   ` Jia-Ju Bai
2021-03-08 13:33     ` Heiner Kallweit
2021-03-08 13:49       ` Jia-Ju Bai

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