From be70ab2ebb07f4c6fad99492b6754d06435edb28 Mon Sep 17 00:00:00 2001
From: ligd <liguiding1@xiaomi.com>
Date: Fri, 3 Dec 2021 20:38:34 +0800
Subject: [PATCH] rpmsg_scoket: handle race condition on ept_cb
 RPMSG_SOCKET_CMD_SYNC

Signed-off-by: ligd <liguiding1@xiaomi.com>
---
 net/rpmsg/rpmsg_sockif.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/rpmsg/rpmsg_sockif.c b/net/rpmsg/rpmsg_sockif.c
index 5ce5021ff1..e1d547f4f8 100644
--- a/net/rpmsg/rpmsg_sockif.c
+++ b/net/rpmsg/rpmsg_sockif.c
@@ -296,9 +296,11 @@ static int rpmsg_socket_ept_cb(FAR struct rpmsg_endpoint *ept,
 
   if (head->cmd == RPMSG_SOCKET_CMD_SYNC)
     {
+      rpmsg_socket_lock(&conn->recvlock);
       conn->sendsize = head->size;
       conn->psock->s_flags |= _SF_CONNECTED;
       _SO_SETERRNO(conn->psock, OK);
+      rpmsg_socket_unlock(&conn->recvlock);
       rpmsg_socket_post(&conn->sendsem);
       rpmsg_socket_pollnotify(conn, POLLOUT);
     }