This is a note to let you know that I've just added the patch titled
USB: sl811: fix memory leak with using debugfs_lookup()
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:
usb-sl811-fix-memory-leak-with-using-debugfs_lookup.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.
commit 4e9090b6a89a4e996b6499799c53bacaee153e34
Author: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Date: Thu Feb 2 16:32:26 2023 +0100
USB: sl811: fix memory leak with using debugfs_lookup()
[ Upstream commit e1523c4dbc54e164638ff8729d511cf91e27be04 ]
When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time. To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.
Cc: Vincent Mailhol <mailhol.vincent@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230202153235.2412790-4-gregkh@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 85623731a5162..825ff67273102 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -1501,7 +1501,7 @@ static void create_debug_file(struct sl811 *sl811)
static void remove_debug_file(struct sl811 *sl811)
{
- debugfs_remove(debugfs_lookup("sl811h", usb_debug_root));
+ debugfs_lookup_and_remove("sl811h", usb_debug_root);
}
/*-------------------------------------------------------------------------*/
