From 3e3fa8056fd259f34e6f0c02b54d17893114c909 Mon Sep 17 00:00:00 2001 From: Chen Ni Date: Tue, 31 Oct 2023 08:08:07 +0000 Subject: [PATCH] pinctrl: stm32: Add check for devm_kcalloc [ Upstream commit b0eeba527e704d6023a6cd9103f929226e326b03 ] Add check for the return value of devm_kcalloc() and return the error if it fails in order to avoid NULL pointer dereference. Fixes: 32c170ff15b0 ("pinctrl: stm32: set default gpio line names using pin names") Signed-off-by: Chen Ni Acked-by: Valentin Caron Link: https://lore.kernel.org/r/20231031080807.3600656-1-nichen@iscas.ac.cn Signed-off-by: Linus Walleij Signed-off-by: Sasha Levin --- drivers/pinctrl/stm32/pinctrl-stm32.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c index a73385a431de..419eca49ccec 100644 --- a/drivers/pinctrl/stm32/pinctrl-stm32.c +++ b/drivers/pinctrl/stm32/pinctrl-stm32.c @@ -1378,6 +1378,11 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl, struct fwnode } names = devm_kcalloc(dev, npins, sizeof(char *), GFP_KERNEL); + if (!names) { + err = -ENOMEM; + goto err_clk; + } + for (i = 0; i < npins; i++) { stm32_pin = stm32_pctrl_get_desc_pin_from_gpio(pctl, bank, i); if (stm32_pin && stm32_pin->pin.name)