From dcdd7d73c6083a63fe966a68f11eddcafa3fd743 Mon Sep 17 00:00:00 2001
From: hantwofish <hankangkang5@huawei.com>
Date: Thu, 14 Dec 2023 14:51:37 +0800
Subject: [PATCH] resove null pointer

---
 src/api/sockets.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/api/sockets.c b/src/api/sockets.c
index a9d39ae..0b3e4ea 100644
--- a/src/api/sockets.c
+++ b/src/api/sockets.c
@@ -801,15 +801,17 @@ lwip_accept4(int s, struct sockaddr *addr, socklen_t *addrlen, int flags)
 #endif /* GAZELLE_ENABLE */
   nsock = &sockets[newsock - LWIP_SOCKET_OFFSET];
 #if GAZELLE_ENABLE
+  int ret = 0;
   struct tcp_pcb *pcb = newconn->pcb.tcp;
-  if (pcb->client_rx_ring != NULL && pcb->client_tx_ring != NULL) {
-    if (find_same_node_memzone(pcb, nsock) != 0) {
+  if (pcb != NULL && pcb->client_rx_ring != NULL && pcb->client_tx_ring != NULL) {
+    ret = find_same_node_memzone(pcb, nsock);
+  }
+  if (pcb == NULL || ret != 0) {
       netconn_delete(newconn);
       free_socket(nsock, 1);
       sock_set_errno(sock, ENOTCONN);
       done_socket(sock);
       return -1;
-    }
   }
 #endif
 
-- 
2.33.0