From: Gen Zhang <blackgod016574@gmail.com>
Date: Tue, 28 May 2019 02:18:51 +0000 (+0800)
Subject: clk-sunxi: fix a missing-check bug in sunxi_divs_clk_setup()
X-Git-Tag: v5.15~5910^2~4^5~2^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fcdf445ff42f036d22178b49cf64e92d527c1330;p=platform%2Fkernel%2Flinux-starfive.git

clk-sunxi: fix a missing-check bug in sunxi_divs_clk_setup()

In sunxi_divs_clk_setup(), 'derived_name' is allocated by kstrndup().
It returns NULL when fails. 'derived_name' should be checked.

Signed-off-by: Gen Zhang <blackgod016574@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
---

diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
index f5b1c00..830bfb7 100644
--- a/drivers/clk/sunxi/clk-sunxi.c
+++ b/drivers/clk/sunxi/clk-sunxi.c
@@ -989,6 +989,8 @@ static struct clk ** __init sunxi_divs_clk_setup(struct device_node *node,
 		if (endp) {
 			derived_name = kstrndup(clk_name, endp - clk_name,
 						GFP_KERNEL);
+			if (!derived_name)
+				return NULL;
 			factors.name = derived_name;
 		} else {
 			factors.name = clk_name;