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authorliuyacan <liuyacan@corp.netease.com>2022-05-23 12:57:07 +0800
committerDavid S. Miller <davem@davemloft.net>2022-05-23 09:58:47 +0100
commit75c1edf23b95a9c66923d9269d8e86e4dbde151f (patch)
tree7af193059b6dde734a092cd48f24ce417f4cd0fc /net/smc/af_smc.c
parent0a3ad7d323686fbaae8688326cc5ea0d185c6fca (diff)
net/smc: postpone sk_refcnt increment in connect()
Same trigger condition as commit 86434744. When setsockopt runs in parallel to a connect(), and switch the socket into fallback mode. Then the sk_refcnt is incremented in smc_connect(), but its state stay in SMC_INIT (NOT SMC_ACTIVE). This cause the corresponding sk_refcnt decrement in __smc_release() will not be performed. Fixes: 86434744fedf ("net/smc: add fallback check to connect()") Signed-off-by: liuyacan <liuyacan@corp.netease.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/af_smc.c')
-rw-r--r--net/smc/af_smc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index fce16b9d6e1a..45a24d24210f 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -1564,9 +1564,9 @@ static int smc_connect(struct socket *sock, struct sockaddr *addr,
if (rc && rc != -EINPROGRESS)
goto out;
- sock_hold(&smc->sk); /* sock put in passive closing */
if (smc->use_fallback)
goto out;
+ sock_hold(&smc->sk); /* sock put in passive closing */
if (flags & O_NONBLOCK) {
if (queue_work(smc_hs_wq, &smc->connect_work))
smc->connect_nonblock = 1;