[PATCH 5.9 031/757] chelsio/chtls: fix socket lock

From: Greg Kroah-Hartman
Date: Tue Oct 27 2020 - 12:00:08 EST


From: Vinay Kumar Yadav <vinay.yadav@xxxxxxxxxxx>

[ Upstream commit 0fb5f0160a36d7acaa8e84ce873af99f94b60484 ]

In chtls_sendpage() socket lock is released but not acquired,
fix it by taking lock.

Fixes: 36bedb3f2e5b ("crypto: chtls - Inline TLS record Tx")
Signed-off-by: Vinay Kumar Yadav <vinay.yadav@xxxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/crypto/chelsio/chtls/chtls_io.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/crypto/chelsio/chtls/chtls_io.c
+++ b/drivers/crypto/chelsio/chtls/chtls_io.c
@@ -1240,6 +1240,7 @@ int chtls_sendpage(struct sock *sk, stru
copied = 0;
csk = rcu_dereference_sk_user_data(sk);
cdev = csk->cdev;
+ lock_sock(sk);
timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT);

err = sk_stream_wait_connect(sk, &timeo);