From 36c893d3a759ae7c91ee7d4871ebfc7504f08c40 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Thu, 2 Feb 2023 15:16:21 +0100
Subject: [PATCH] drivers: base: dd: fix memory leak with using debugfs_lookup()
Git-commit: 36c893d3a759ae7c91ee7d4871ebfc7504f08c40
Patch-mainline: v6.3-rc1
References: git-fixes
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@kernel.org>
Link: https://lore.kernel.org/r/20230202141621.2296458-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/base/dd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 817ef27a78f7..8def2ba08a82 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -370,7 +370,7 @@ 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);
--
2.35.3