diff mbox series

[7/8] clk: ti: clkctrl: check return value of kasprintf()

Message ID 20230530093913.1656095-8-claudiu.beznea@microchip.com (mailing list archive)
State New, archived
Headers show
Series clk: check memory returned by {devm_}kasprintf() | expand

Commit Message

Claudiu Beznea May 30, 2023, 9:39 a.m. UTC 
kasprintf() returns a pointer to dynamically allocated memory.
Pointer could be NULL in case allocation fails. Check pointer validity.
Identified with coccinelle (kmerr.cocci script).

Fixes: 852049594b9a ("clk: ti: clkctrl: convert subclocks to use proper names also")
Fixes: 6c3090520554 ("clk: ti: clkctrl: Fix hidden dependency to node name")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 drivers/clk/ti/clkctrl.c | 7 +++++++
 1 file changed, 7 insertions(+)

Comments

Tony Lindgren May 31, 2023, 4:12 a.m. UTC | #1 
* Claudiu Beznea <claudiu.beznea@microchip.com> [230530 09:41]:
> kasprintf() returns a pointer to dynamically allocated memory.
> Pointer could be NULL in case allocation fails. Check pointer validity.
> Identified with coccinelle (kmerr.cocci script).

Reviewed-by: Tony Lindgren <tony@atomide.com>
Stephen Boyd June 20, 2023, 6:55 p.m. UTC | #2 
Quoting Claudiu Beznea (2023-05-30 02:39:12)
> kasprintf() returns a pointer to dynamically allocated memory.
> Pointer could be NULL in case allocation fails. Check pointer validity.
> Identified with coccinelle (kmerr.cocci script).
> 
> Fixes: 852049594b9a ("clk: ti: clkctrl: convert subclocks to use proper names also")
> Fixes: 6c3090520554 ("clk: ti: clkctrl: Fix hidden dependency to node name")
> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
> ---

Applied to clk-next
diff mbox series

Patch

diff --git a/drivers/clk/ti/clkctrl.c b/drivers/clk/ti/clkctrl.c
index b6fce916967c..8c40f10280b7 100644
--- a/drivers/clk/ti/clkctrl.c
+++ b/drivers/clk/ti/clkctrl.c
@@ -258,6 +258,9 @@  static const char * __init clkctrl_get_clock_name(struct device_node *np,
 	if (clkctrl_name && !legacy_naming) {
 		clock_name = kasprintf(GFP_KERNEL, "%s-clkctrl:%04x:%d",
 				       clkctrl_name, offset, index);
+		if (!clock_name)
+			return NULL;
+
 		strreplace(clock_name, '_', '-');
 
 		return clock_name;
@@ -586,6 +589,10 @@  static void __init _ti_omap4_clkctrl_setup(struct device_node *node)
 	if (clkctrl_name) {
 		provider->clkdm_name = kasprintf(GFP_KERNEL,
 						 "%s_clkdm", clkctrl_name);
+		if (!provider->clkdm_name) {
+			kfree(provider);
+			return;
+		}
 		goto clkdm_found;
 	}