This is a note to let you know that I've just added the patch titled
drivers: base: dd: fix memory leak with using debugfs_lookup()
to the 6.2-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:
drivers-base-dd-fix-memory-leak-with-using-debugfs_l.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 30f35e559a52f29e721d4592c1cb79c1a5b298d2
Author: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Date: Thu Feb 2 15:16:21 2023 +0100
drivers: base: dd: fix memory leak with using debugfs_lookup()
[ Upstream commit 36c893d3a759ae7c91ee7d4871ebfc7504f08c40 ]
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: "Rafael J. Wysocki" <rafael@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230202141621.2296458-2-gregkh@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index e9b2f9c25efe4..959fe018d0dd7 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -372,7 +372,7 @@ late_initcall(deferred_probe_initcall);
static void __exit deferred_probe_exit(void)
{
- debugfs_remove_recursive(debugfs_lookup("devices_deferred", NULL));
+ debugfs_lookup_and_remove("devices_deferred", NULL);
}
__exitcall(deferred_probe_exit);
