From: Claudiu Beznea claudiu.beznea@microchip.com
[ Upstream commit 36e4ef82016a2b785cf2317eade77e76699b7bff ]
{devm_}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: 3044a860fd09 ("clk: Add Si5341/Si5340 driver") Signed-off-by: Claudiu Beznea claudiu.beznea@microchip.com Link: https://lore.kernel.org/r/20230530093913.1656095-5-claudiu.beznea@microchip.... Signed-off-by: Stephen Boyd sboyd@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/clk-si5341.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/clk/clk-si5341.c b/drivers/clk/clk-si5341.c index 6dca3288c8940..b2cf7edc8b308 100644 --- a/drivers/clk/clk-si5341.c +++ b/drivers/clk/clk-si5341.c @@ -1697,6 +1697,10 @@ static int si5341_probe(struct i2c_client *client) for (i = 0; i < data->num_synth; ++i) { synth_clock_names[i] = devm_kasprintf(&client->dev, GFP_KERNEL, "%s.N%u", client->dev.of_node->name, i); + if (!synth_clock_names[i]) { + err = -ENOMEM; + goto free_clk_names; + } init.name = synth_clock_names[i]; data->synth[i].index = i; data->synth[i].data = data; @@ -1715,6 +1719,10 @@ static int si5341_probe(struct i2c_client *client) for (i = 0; i < data->num_outputs; ++i) { init.name = kasprintf(GFP_KERNEL, "%s.%d", client->dev.of_node->name, i); + if (!init.name) { + err = -ENOMEM; + goto free_clk_names; + } init.flags = config[i].synth_master ? CLK_SET_RATE_PARENT : 0; data->clk[i].index = i; data->clk[i].data = data;