]> www.infradead.org Git - users/jedix/linux-maple.git/commit
memstick: fix memory leak if card device is never registered
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 1 Apr 2023 20:03:27 +0000 (22:03 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 26 Apr 2023 12:28:39 +0000 (14:28 +0200)
commita3a93b46833faf7421d4424ab78c8f0402423d04
tree06e222070ba829d4b0f390ace6186898df0f7fa7
parentf6a5f61200ff0f41137b383812ae43898480ed69
memstick: fix memory leak if card device is never registered

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