From: Greg Kroah-Hartman gregkh@linuxfoundation.org
commit 4b6d621c9d859ff89e68cebf6178652592676013 upstream.
When calling dev_set_name() memory is allocated for the name for the struct device. Once that structure device is registered, or attempted to be registerd, with the driver core, the driver core will handle cleaning up that memory when the device is removed from the system.
Unfortunatly for the memstick code, there is an error path that causes the struct device to never be registered, and so the memory allocated in dev_set_name will be leaked. Fix that leak by manually freeing it right before the memory for the device is freed.
Cc: Maxim Levitsky maximlevitsky@gmail.com Cc: Alex Dubov oakad@yahoo.com Cc: Ulf Hansson ulf.hansson@linaro.org Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Hans de Goede hdegoede@redhat.com Cc: Kay Sievers kay.sievers@vrfy.org Cc: linux-mmc@vger.kernel.org Fixes: 0252c3b4f018 ("memstick: struct device - replace bus_id with dev_name(), dev_set_name()") Cc: stable stable@kernel.org Co-developed-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Co-developed-by: Mirsad Goran Todorovac mirsad.todorovac@alu.unizg.hr Signed-off-by: Mirsad Goran Todorovac mirsad.todorovac@alu.unizg.hr Link: https://lore.kernel.org/r/20230401200327.16800-1-gregkh@linuxfoundation.org Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/memstick/core/memstick.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/memstick/core/memstick.c +++ b/drivers/memstick/core/memstick.c @@ -416,6 +416,7 @@ static struct memstick_dev *memstick_all return card; err_out: host->card = old_card; + kfree_const(card->dev.kobj.name); kfree(card); return NULL; } @@ -471,8 +472,10 @@ static void memstick_check(struct work_s put_device(&card->dev); host->card = NULL; } - } else + } else { + kfree_const(card->dev.kobj.name); kfree(card); + } }
out_power_off: