[PATCH 4.18 112/158] regulator: tps65217: Fix NULL pointer dereference on probe

[Greg Kroah-Hartman]

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Anton Vasilyev <vasilyev@xxxxxxxxx>

[ Upstream commit 4f919ca2bf6da826ba1a4316e1b8e9c94e5dbeb2 ]

There is no check that tps->strobes is allocated successfully in
tps65217_regulator_probe().
The patch adds corresponding check.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Anton Vasilyev <vasilyev@xxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/regulator/tps65217-regulator.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/regulator/tps65217-regulator.c
+++ b/drivers/regulator/tps65217-regulator.c
@@ -232,6 +232,8 @@ static int tps65217_regulator_probe(stru
 	tps->strobes = devm_kcalloc(&pdev->dev,
 				    TPS65217_NUM_REGULATOR, sizeof(u8),
 				    GFP_KERNEL);
+	if (!tps->strobes)
+		return -ENOMEM;
 
 	platform_set_drvdata(pdev, tps);