This is a note to let you know that I've just added the patch titled reset: bail if try_module_get() fails to the 5.13-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: reset-bail-if-try_module_get-fails.patch and it can be found in the queue-5.13 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 90a753312c782c9845055ed651249c1b5dc77ac4 Author: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> Date: Mon Jun 7 10:26:15 2021 +0200 reset: bail if try_module_get() fails [ Upstream commit 4fb26fb83f0def3d39c14e268bcd4003aae8fade ] Abort instead of returning a new reset control for a reset controller device that is going to have its module unloaded. Reported-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> Fixes: 61fc41317666 ("reset: Add reset controller API") Acked-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20210607082615.15160-1-p.zabel@xxxxxxxxxxxxxx Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/reset/core.c b/drivers/reset/core.c index 71c1c8264b2d..e2a6a927b84c 100644 --- a/drivers/reset/core.c +++ b/drivers/reset/core.c @@ -774,7 +774,10 @@ static struct reset_control *__reset_control_get_internal( if (!rstc) return ERR_PTR(-ENOMEM); - try_module_get(rcdev->owner); + if (!try_module_get(rcdev->owner)) { + kfree(rstc); + return ERR_PTR(-ENODEV); + } rstc->rcdev = rcdev; list_add(&rstc->list, &rcdev->reset_control_head);