This is a note to let you know that I've just added the patch titled
ASoC: codecs: wcd938x-sdw: fix use after free on driver unbind
to the 5.15-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:
asoc-codecs-wcd938x-sdw-fix-use-after-free-on-driver-unbind.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f0dfdcbe706462495d47982eecd13a61aabd644d Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan+linaro@xxxxxxxxxx>
Date: Tue, 3 Oct 2023 17:55:57 +0200
Subject: ASoC: codecs: wcd938x-sdw: fix use after free on driver unbind
From: Johan Hovold <johan+linaro@xxxxxxxxxx>
commit f0dfdcbe706462495d47982eecd13a61aabd644d upstream.
Make sure to deregister the component when the driver is being unbound
and before the underlying device-managed resources are freed.
Fixes: 16572522aece ("ASoC: codecs: wcd938x-sdw: add SoundWire driver")
Cc: stable@xxxxxxxxxxxxxxx # 5.14
Cc: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231003155558.27079-7-johan+linaro@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/soc/codecs/wcd938x-sdw.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/sound/soc/codecs/wcd938x-sdw.c
+++ b/sound/soc/codecs/wcd938x-sdw.c
@@ -269,6 +269,15 @@ static int wcd9380_probe(struct sdw_slav
return component_add(dev, &wcd938x_sdw_component_ops);
}
+static int wcd9380_remove(struct sdw_slave *pdev)
+{
+ struct device *dev = &pdev->dev;
+
+ component_del(dev, &wcd938x_sdw_component_ops);
+
+ return 0;
+}
+
static const struct sdw_device_id wcd9380_slave_id[] = {
SDW_SLAVE_ENTRY(0x0217, 0x10d, 0),
{},
@@ -307,6 +316,7 @@ static const struct dev_pm_ops wcd938x_s
static struct sdw_driver wcd9380_codec_driver = {
.probe = wcd9380_probe,
+ .remove = wcd9380_remove,
.ops = &wcd9380_slave_ops,
.id_table = wcd9380_slave_id,
.driver = {
Patches currently in stable-queue which might be from johan+linaro@xxxxxxxxxx are
queue-5.15/asoc-codecs-wcd938x-fix-unbind-tear-down-order.patch
queue-5.15/asoc-codecs-wcd938x-sdw-fix-use-after-free-on-driver-unbind.patch
queue-5.15/asoc-codecs-wcd938x-drop-bogus-bind-error-handling.patch
queue-5.15/asoc-codecs-wcd938x-sdw-fix-runtime-pm-imbalance-on-probe-errors.patch
queue-5.15/regmap-fix-null-deref-on-lookup.patch
