[PATCH] ceph: Check memory allocation result

Should check result of kstrndup() in case of memory allocation failure.

Signed-off-by: Chengguang Xu <redacted>
---
 net/ceph/ceph_common.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index 5c036d2..1e492ef 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c

@@ -421,6 +421,10 @@ struct ceph_options *
                        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);