1From dcdd7d73c6083a63fe966a68f11eddcafa3fd743 Mon Sep 17 00:00:00 2001 2From: hantwofish <hankangkang5@huawei.com> 3Date: Thu, 14 Dec 2023 14:51:37 +0800 4Subject: [PATCH] resove null pointer 5 6--- 7 src/api/sockets.c | 8 +++++--- 8 1 file changed, 5 insertions(+), 3 deletions(-) 9 10diff --git a/src/api/sockets.c b/src/api/sockets.c 11index a9d39ae..0b3e4ea 100644 12--- a/src/api/sockets.c 13+++ b/src/api/sockets.c 14@@ -801,15 +801,17 @@ lwip_accept4(int s, struct sockaddr *addr, socklen_t *addrlen, int flags) 15 #endif /* GAZELLE_ENABLE */ 16 nsock = &sockets[newsock - LWIP_SOCKET_OFFSET]; 17 #if GAZELLE_ENABLE 18+ int ret = 0; 19 struct tcp_pcb *pcb = newconn->pcb.tcp; 20- if (pcb->client_rx_ring != NULL && pcb->client_tx_ring != NULL) { 21- if (find_same_node_memzone(pcb, nsock) != 0) { 22+ if (pcb != NULL && pcb->client_rx_ring != NULL && pcb->client_tx_ring != NULL) { 23+ ret = find_same_node_memzone(pcb, nsock); 24+ } 25+ if (pcb == NULL || ret != 0) { 26 netconn_delete(newconn); 27 free_socket(nsock, 1); 28 sock_set_errno(sock, ENOTCONN); 29 done_socket(sock); 30 return -1; 31- } 32 } 33 #endif 34 35-- 362.33.0 37 38