From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
kstrndup can potentially return NULL, so add a null memory check to
avoid a null pointer reference later on.
Addresses-Coverity: ("Dereference null return")
Fixes: 615c164da0eb ("intel_th: msu: Introduce buffer interface")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
---
drivers/hwtracing/intel_th/msu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index 4892ac446c01..dd7e3c304ee5 100644
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -1848,6 +1848,8 @@ mode_store(struct device *dev, struct device_attribute *attr, const char *buf,
len = cp - buf;
mode = kstrndup(buf, len, GFP_KERNEL);
+ if (!mode)
+ return -ENOMEM;
i = match_string(msc_mode, ARRAY_SIZE(msc_mode), mode);
if (i >= 0)
goto found;
--
2.20.1
