This is a note to let you know that I've just added the patch titled regmap: Fix memory leak from regmap_register_patch to the 5.4-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: regmap-fix-memory-leak-from-regmap_register_patch.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 9662459cdefdd196220a87d2481fc5631f26e658 Author: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx> Date: Wed Jun 17 16:21:29 2020 +0100 regmap: Fix memory leak from regmap_register_patch [ Upstream commit 95b2c3ec4cb1689db2389c251d39f64490ba641c ] When a register patch is registered the reg_sequence is copied but the memory allocated is never freed. Add a kfree in regmap_exit to clean it up. Fixes: 22f0d90a3482 ("regmap: Support register patch sets") Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20200617152129.19655-1-ckeepax@xxxxxxxxxxxxxxxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 59f911e577192..508bbd6ea4396 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1356,6 +1356,7 @@ void regmap_exit(struct regmap *map) if (map->hwlock) hwspin_lock_free(map->hwlock); kfree_const(map->name); + kfree(map->patch); kfree(map); } EXPORT_SYMBOL_GPL(regmap_exit);