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()
References: bsc#1012628
Patch-mainline: 6.2.5
Git-commit: 36c893d3a759ae7c91ee7d4871ebfc7504f08c40
[ 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@kernel.org>
Link: https://lore.kernel.org/r/20230202141621.2296458-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
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 e9b2f9c2..959fe018 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);
--
2.35.3