From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Fri, 18 Feb 2022 15:32:59 +0000 (+0300)
Subject: net/smc: unlock on error paths in __smc_setsockopt()
X-Git-Tag: v6.6.17~7931^2~295
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7a11455f376de8a4357af4a20ae68fefe29b8ceb;p=platform%2Fkernel%2Flinux-rpi.git

net/smc: unlock on error paths in __smc_setsockopt()

These two error paths need to release_sock(sk) before returning.

Fixes: a6a6fe27bab4 ("net/smc: Dynamic control handshake limitation by socket options")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: D. Wythe <alibuda@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index b40ae4d..30acc31 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -2715,10 +2715,14 @@ static int __smc_setsockopt(struct socket *sock, int level, int optname,
 	lock_sock(sk);
 	switch (optname) {
 	case SMC_LIMIT_HS:
-		if (optlen < sizeof(int))
-			return -EINVAL;
-		if (copy_from_sockptr(&val, optval, sizeof(int)))
-			return -EFAULT;
+		if (optlen < sizeof(int)) {
+			rc = -EINVAL;
+			break;
+		}
+		if (copy_from_sockptr(&val, optval, sizeof(int))) {
+			rc = -EFAULT;
+			break;
+		}
 
 		smc->limit_smc_hs = !!val;
 		rc = 0;