diff mbox series

[v2] nfs: nfs4clinet: check the return value of kstrdup()

Message ID tencent_818AD07038A58DFF31107CE6BB5C498E3607@qq.com (mailing list archive)
State New, archived
Headers show
Series [v2] nfs: nfs4clinet: check the return value of kstrdup() | expand

Commit Message

Xiaoke Wang Dec. 16, 2021, 5:01 p.m. UTC 
From: Xiaoke Wang <xkernel.wang@foxmail.com>

kstrdup() returns NULL when some internal memory errors happen, it is
better to check the return value of it so to catch the memory error in
time.

Signed-off-by: Xiaoke Wang <xkernel.wang@foxmail.com>
---
Changelogs:
move the check under if block.
---
 fs/nfs/nfs4client.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--
diff mbox series

Patch

diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index af57332..ed06b68 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -1368,8 +1368,11 @@  int nfs4_update_server(struct nfs_server *server, const char *hostname,
 	}
 	nfs_put_client(clp);
 
-	if (server->nfs_client->cl_hostname == NULL)
+	if (server->nfs_client->cl_hostname == NULL) {
 		server->nfs_client->cl_hostname = kstrdup(hostname, GFP_KERNEL);
+		if (server->nfs_client->cl_hostname == NULL)
+			return -ENOMEM;
+	}
 	nfs_server_insert_lists(server);
 
 	return nfs_probe_destination(server);