From: Qiushi Wu wu000273@umn.edu
commit 1d7a7128a2e9e1f137c99b0a44e94d70a77343e3 upstream.
In function power_supply_add_hwmon_sysfs(), psyhw->props is allocated by bitmap_zalloc(). But this pointer is not deallocated when devm_add_action fail, which lead to a memory leak bug. To fix this, we replace devm_add_action with devm_add_action_or_reset.
Cc: stable@kernel.org Fixes: e67d4dfc9ff19 ("power: supply: Add HWMON compatibility layer") Signed-off-by: Qiushi Wu wu000273@umn.edu Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/power/supply/power_supply_hwmon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/power/supply/power_supply_hwmon.c +++ b/drivers/power/supply/power_supply_hwmon.c @@ -304,7 +304,7 @@ int power_supply_add_hwmon_sysfs(struct goto error; }
- ret = devm_add_action(dev, power_supply_hwmon_bitmap_free, + ret = devm_add_action_or_reset(dev, power_supply_hwmon_bitmap_free, psyhw->props); if (ret) goto error;