From: Chengguang Xu <cgxu519@icloud.com>
Date: Fri, 26 Jan 2018 14:54:43 +0800
Subject: libceph: check kstrndup() return value
Git-commit: affff07739392920d3d2095212c72af220481b95
Patch-mainline: v4.16-rc1
References: FATE#324714
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>
Acked-by: Luis Henriques <lhenriques@suse.com>
---
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 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);