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[1/3] power: supply: charger-manager: Fix a NULL pointer dereference in 'charger_manager_probe()'

Message ID 09a9f8a61f784779d6127b83f9540ae1db4c25be.1502058761.git.christophe.jaillet@wanadoo.fr
State Not Applicable, archived
Headers show

Commit Message

Christophe JAILLET Aug. 6, 2017, 10:37 p.m. UTC
'devm_kzalloc()' can return NULL. Return -ENOMEM in this case in order to
avoid a NULL pointer dereference later on.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
 drivers/power/supply/charger-manager.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/drivers/power/supply/charger-manager.c b/drivers/power/supply/charger-manager.c
index adc3761831e1..52a49857e20f 100644
--- a/drivers/power/supply/charger-manager.c
+++ b/drivers/power/supply/charger-manager.c
@@ -1645,6 +1645,8 @@  static int charger_manager_probe(struct platform_device *pdev)
 	/* Initialize alarm timer */
 	if (alarmtimer_get_rtcdev()) {
 		cm_timer = devm_kzalloc(cm->dev, sizeof(*cm_timer), GFP_KERNEL);
+		if (!cm_timer)
+			return -ENOMEM;
 		alarm_init(cm_timer, ALARM_BOOTTIME, cm_timer_func);
 	}