From: Qinglang Miao <miaoqinglang@xxxxxxxxxx>
[ Upstream commit e3e9ced5c93803d5b2ea1942c4bf0192622531d6 ]
kfree(host->card) has been called in put_device so that
another kfree would raise cause a double-free bug.
Fixes: 0193383a5833 ("memstick: core: fix device_register() error handling")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Qinglang Miao <miaoqinglang@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20201120074846.31322-1-miaoqinglang@xxxxxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/memstick/core/memstick.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/memstick/core/memstick.c b/drivers/memstick/core/memstick.c
index 1041eb7a61672..2cae85a7ca6de 100644
--- a/drivers/memstick/core/memstick.c
+++ b/drivers/memstick/core/memstick.c
@@ -469,7 +469,6 @@ static void memstick_check(struct work_struct *work)
host->card = card;
if (device_register(&card->dev)) {
put_device(&card->dev);
- kfree(host->card);
host->card = NULL;
}
} else
--
2.27.0
