From: Chengguang Xu <cgxu519@icloud.com>
Date: Fri, 26 Jan 2018 06:54:43 +0000 (+0800)
Subject: libceph: check kstrndup() return value
X-Git-Tag: v4.16-rc1~32^2~1
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=affff07739392920d3d2095212c72af220481b95;p=linux.git

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>
---

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);