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>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index 5c036d2f401e..1e492ef2a33d 100644
--- 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);