From 8b28e5c35d3272e367953fba52cd72fd86573488 Mon Sep 17 00:00:00 2001 From: Qiushi Wu Date: Sat, 2 May 2020 18:33:38 -0500 Subject: [PATCH] power: supply: core: fix memory leak in HWMON error path 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 Signed-off-by: Sebastian Reichel Signed-off-by: Greg Kroah-Hartman --- drivers/power/supply/power_supply_hwmon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/power/supply/power_supply_hwmon.c b/drivers/power/supply/power_supply_hwmon.c index 67b6ee60085e2..2e7e2b73b0122 100644 --- 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 power_supply *psy) 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; -- 2.51.0