This is a note to let you know that I've just added the patch titled
ALSA: aoa: i2sbus: fix possible memory leak in i2sbus_add_dev()
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alsa-aoa-i2sbus-fix-possible-memory-leak-in-i2sbus_a.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 1465f69de7a3ea5e5f4bc81c69dc3da7f045d77d
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date: Thu Oct 27 09:34:38 2022 +0800
ALSA: aoa: i2sbus: fix possible memory leak in i2sbus_add_dev()
[ Upstream commit 4a4c8482e370d697738a78dcd7bf2780832cb712 ]
dev_set_name() in soundbus_add_one() allocates memory for name, it need be
freed when of_device_register() fails, call soundbus_dev_put() to give up
the reference that hold in device_initialize(), so that it can be freed in
kobject_cleanup() when the refcount hit to 0. And other resources are also
freed in i2sbus_release_dev(), so it can return 0 directly.
Fixes: f3d9478b2ce4 ("[ALSA] snd-aoa: add snd-aoa")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221027013438.991920-1-yangyingliang@xxxxxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/aoa/soundbus/i2sbus/core.c b/sound/aoa/soundbus/i2sbus/core.c
index 000b58522106..c016df586992 100644
--- a/sound/aoa/soundbus/i2sbus/core.c
+++ b/sound/aoa/soundbus/i2sbus/core.c
@@ -302,6 +302,10 @@ static int i2sbus_add_dev(struct macio_dev *macio,
if (soundbus_add_one(&dev->sound)) {
printk(KERN_DEBUG "i2sbus: device registration error!\n");
+ if (dev->sound.ofdev.dev.kobj.state_initialized) {
+ soundbus_dev_put(&dev->sound);
+ return 0;
+ }
goto err;
}
