From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Mon, 11 Jun 2018 13:47:21 +0000 (+0300)
Subject: libnvdimm, namespace: Replace kmemdup() with kstrndup()
X-Git-Tag: v5.0-rc1~109^2^2
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=3d9cbe37c16ffd19eeab6b49a0311bbb999627d8;p=users%2Fjedix%2Flinux-maple.git

libnvdimm, namespace: Replace kmemdup() with kstrndup()

kstrndup() takes care of '\0' terminator for the strings.

Use it here instead of kmemdup() + explicit terminating the input string.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---

diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c
index 681af3a8fd62e..4b077555ac702 100644
--- a/drivers/nvdimm/namespace_devs.c
+++ b/drivers/nvdimm/namespace_devs.c
@@ -270,11 +270,10 @@ static ssize_t __alt_name_store(struct device *dev, const char *buf,
 	if (dev->driver || to_ndns(dev)->claim)
 		return -EBUSY;
 
-	input = kmemdup(buf, len + 1, GFP_KERNEL);
+	input = kstrndup(buf, len, GFP_KERNEL);
 	if (!input)
 		return -ENOMEM;
 
-	input[len] = '\0';
 	pos = strim(input);
 	if (strlen(pos) + 1 > NSLABEL_NAME_LEN) {
 		rc = -EINVAL;