libceph: check kstrndup() return value

Should check result of kstrndup() in case of memory allocation failure. Signed-off-by: Chengguang Xu <cgxu519@icloud.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
mariux64 · Jan 29, 2018 · affff07 · affff07
1 parent e30ee58
commit affff07
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
@@ -421,6 +421,10 @@ ceph_parse_options(char *options, const char *dev_name,
 			opt->name = kstrndup(argstr[0].from,
 					      argstr[0].to-argstr[0].from,
 					      GFP_KERNEL);
+			if (!opt->name) {
+				err = -ENOMEM;
+				goto out;
+			}
 			break;
 		case Opt_secret:
 		        opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);