From da2629684822091bf15c6c14d8e33b75dfce8637 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Thu, 6 Jul 2017 16:49:18 -0500 Subject: [PATCH] regulator: axp20x: add NULL check on devm_kzalloc() return value Check return value from call to devm_kzalloc() in order to prevent a NULL pointer dereference. This issue was detected using Coccinelle and the following semantic patch: @@ expression x; identifier fld; @@ * x = devm_kzalloc(...); ... when != x == NULL x->fld Signed-off-by: Gustavo A. R. Silva Signed-off-by: Mark Brown --- drivers/regulator/axp20x-regulator.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c index e2608fe770b9..f18b36dd57dd 100644 --- a/drivers/regulator/axp20x-regulator.c +++ b/drivers/regulator/axp20x-regulator.c @@ -691,6 +691,9 @@ static int axp20x_regulator_probe(struct platform_device *pdev) (regulators == axp809_regulators && i == AXP809_DC1SW)) { new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc), GFP_KERNEL); + if (!new_desc) + return -ENOMEM; + *new_desc = regulators[i]; new_desc->supply_name = dcdc1_name; desc = new_desc; @@ -700,6 +703,9 @@ static int axp20x_regulator_probe(struct platform_device *pdev) (regulators == axp809_regulators && i == AXP809_DC5LDO)) { new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc), GFP_KERNEL); + if (!new_desc) + return -ENOMEM; + *new_desc = regulators[i]; new_desc->supply_name = dcdc5_name; desc = new_desc; -- 2.20.1