From: ruanjinjie <ruanjinjie@xxxxxxxxxx>
[ Upstream commit 104bb8a663451404a26331263ce5b96c34504049 ]
when kmalloc() fail to allocate memory in kasprintf(), propname
will be NULL, strcmp() called by of_get_property() will cause
null pointer dereference.
So return ENOMEM if kasprintf() return NULL pointer.
Fixes: 3afb50d7125b ("power: supply: core: Add some helpers to use the battery OCV capacity table")
Signed-off-by: ruanjinjie <ruanjinjie@xxxxxxxxxx>
Reviewed-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/power/supply/power_supply_core.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c
index c3af54421840..3f9c60c5b250 100644
--- a/drivers/power/supply/power_supply_core.c
+++ b/drivers/power/supply/power_supply_core.c
@@ -696,6 +696,11 @@ int power_supply_get_battery_info(struct power_supply *psy,
int i, tab_len, size;
propname = kasprintf(GFP_KERNEL, "ocv-capacity-table-%d", index);
+ if (!propname) {
+ power_supply_put_battery_info(psy, info);
+ err = -ENOMEM;
+ goto out_put_node;
+ }
list = of_get_property(battery_np, propname, &size);
if (!list || !size) {
dev_err(&psy->dev, "failed to get %s\n", propname);
--
2.35.1
