From ce4109005770ff6f160e1424928b9cc696e8c8f2 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sun, 2 Aug 2020 11:25:09 +0800 Subject: [PATCH] regulator: cros-ec-regulator: Add NULL test for devm_kmemdup call Fix possible NULL pointer dereference. Signed-off-by: Axel Lin Link: https://lore.kernel.org/r/20200802032509.305425-1-axel.lin@ingics.com Signed-off-by: Mark Brown --- drivers/regulator/cros-ec-regulator.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/regulator/cros-ec-regulator.c b/drivers/regulator/cros-ec-regulator.c index 3117bbd2826b..eb3fc1db4edc 100644 --- a/drivers/regulator/cros-ec-regulator.c +++ b/drivers/regulator/cros-ec-regulator.c @@ -170,6 +170,9 @@ static int cros_ec_regulator_init_info(struct device *dev, data->voltages_mV = devm_kmemdup(dev, resp.voltages_mv, sizeof(u16) * data->num_voltages, GFP_KERNEL); + if (!data->voltages_mV) + return -ENOMEM; + data->desc.n_voltages = data->num_voltages; /* Make sure the returned name is always a valid string */