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Date: Sun, 2 Aug 2020 11:25:09 +0800 From: Axel Lin <axel.lin@...ics.com> To: Mark Brown <broonie@...nel.org> Cc: Pi-Hsun Shih <pihsun@...omium.org>, Prashant Malani <pmalani@...omium.org>, Enric Balletbo i Serra <enric.balletbo@...labora.com>, Liam Girdwood <lgirdwood@...il.com>, linux-kernel@...r.kernel.org, Axel Lin <axel.lin@...ics.com> Subject: [PATCH] regulator: cros-ec-regulator: Add NULL test for devm_kmemdup call Fix possible NULL pointer dereference. Signed-off-by: Axel Lin <axel.lin@...ics.com> --- 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 */ -- 2.25.1
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