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| author | Xiaoke Wang <xkernel.wang@foxmail.com> | 2021-12-17 01:01:33 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-16 12:51:44 +0100 |
| commit | 2c9587f72ff4b502c2fd15eb3ccff388eae12d07 (patch) | |
| tree | 5ea39879755360cf2249c591f4297e7765d34f5f | |
| parent | 1789f59f1779c99d0756b40036c62a7519f53543 (diff) | |
| download | linux-stable-2c9587f72ff4b502c2fd15eb3ccff388eae12d07.tar.gz linux-stable-2c9587f72ff4b502c2fd15eb3ccff388eae12d07.tar.bz2 linux-stable-2c9587f72ff4b502c2fd15eb3ccff388eae12d07.zip | |
nfs: nfs4clinet: check the return value of kstrdup()
[ Upstream commit fbd2057e5329d3502a27491190237b6be52a1cb6 ]
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>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | fs/nfs/nfs4client.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index 43659326b519..c97ec2fa0bbc 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -1273,8 +1273,11 @@ 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); |