From: Uwe Kleine-König u.kleine-koenig@pengutronix.de
stable inclusion from stable-v6.6.33 commit c1a3803e5bb91c13e9ad582003e4288f67f06cd9 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IA6S9P CVE: CVE-2024-38611
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 545b215736c5c4b354e182d99c578a472ac9bfce ]
Using __exit for the remove function results in the remove callback being discarded with CONFIG_VIDEO_ET8EK8=y. When such a device gets unbound (e.g. using sysfs or hotplug), the driver is just removed without the cleanup being performed. This results in resource leaks. Fix it by compiling in the remove callback unconditionally.
This also fixes a W=1 modpost warning:
WARNING: modpost: drivers/media/i2c/et8ek8/et8ek8: section mismatch in reference: et8ek8_i2c_driver+0x10 (section: .data) -> et8ek8_remove (section: .exit.text)
Fixes: c5254e72b8ed ("[media] media: Driver for Toshiba et8ek8 5MP sensor") Signed-off-by: Uwe Kleine-König u.kleine-koenig@pengutronix.de Signed-off-by: Sakari Ailus sakari.ailus@linux.intel.com Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Sasha Levin sashal@kernel.org
Conflicts: drivers/media/i2c/et8ek8/et8ek8_driver.c [Ma Wupeng: return val of et8ek8_remove lead to conflict] Signed-off-by: Ma Wupeng mawupeng1@huawei.com --- drivers/media/i2c/et8ek8/et8ek8_driver.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/i2c/et8ek8/et8ek8_driver.c b/drivers/media/i2c/et8ek8/et8ek8_driver.c index 256acf73d5ea..4d7c4eac5e20 100644 --- a/drivers/media/i2c/et8ek8/et8ek8_driver.c +++ b/drivers/media/i2c/et8ek8/et8ek8_driver.c @@ -1460,7 +1460,7 @@ static int et8ek8_probe(struct i2c_client *client) return ret; }
-static int __exit et8ek8_remove(struct i2c_client *client) +static int et8ek8_remove(struct i2c_client *client) { struct v4l2_subdev *subdev = i2c_get_clientdata(client); struct et8ek8_sensor *sensor = to_et8ek8_sensor(subdev); @@ -1504,7 +1504,7 @@ static struct i2c_driver et8ek8_i2c_driver = { .of_match_table = et8ek8_of_table, }, .probe_new = et8ek8_probe, - .remove = __exit_p(et8ek8_remove), + .remove = et8ek8_remove, .id_table = et8ek8_id_table, };