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authorQinglang Miao <miaoqinglang@huawei.com>2020-11-20 15:48:46 +0800
committerUlf Hansson <ulf.hansson@linaro.org>2020-11-24 11:26:55 +0100
commite3e9ced5c93803d5b2ea1942c4bf0192622531d6 (patch)
treeb67b364bbe0a1f7c5d4e37999073dce08eba5bda /drivers/memstick/core
parentbf3023e6e863fb4c6607553708392de477d4983b (diff)
memstick: fix a double-free bug in memstick_check
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@huawei.com> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Link: https://lore.kernel.org/r/20201120074846.31322-1-miaoqinglang@huawei.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/memstick/core')
-rw-r--r--drivers/memstick/core/memstick.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/memstick/core/memstick.c b/drivers/memstick/core/memstick.c
index ef03d6fafc5c..12bc3f5a6cbb 100644
--- a/drivers/memstick/core/memstick.c
+++ b/drivers/memstick/core/memstick.c
@@ -468,7 +468,6 @@ 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