From 0202ce8a90efdc81600e7bf9712d8c324081a924 Mon Sep 17 00:00:00 2001
From: Zdenek Kabelac <zkabelac@redhat.com>
Date: Wed, 8 Nov 2017 13:44:55 +0100
Subject: [PATCH] md: release allocated bitset sync_set
Git-commit: 0202ce8a90efdc81600e7bf9712d8c324081a924
Patch-mainline: v4.15-rc1
References: bsc#1093023
Patch fixes kmemleak on md_stop() path used likely only by dm-raid wrapper.
Code of md is using mddev_put() where both bitsets are released however this
freeing is not shared.
Also set NULL to bio_set and sync_set pointers just like mddev_put is
doing.
Signed-off-by: Zdenek Kabelac <zkabelac@redhat.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Coly Li <colyli@suse.de>
---
drivers/md/md.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 15e4668f594c..e014d39159d7 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5852,8 +5852,14 @@ void md_stop(struct mddev *mddev)
* This is called from dm-raid
*/
__md_stop(mddev);
- if (mddev->bio_set)
+ if (mddev->bio_set) {
bioset_free(mddev->bio_set);
+ mddev->bio_set = NULL;
+ }
+ if (mddev->sync_set) {
+ bioset_free(mddev->sync_set);
+ mddev->sync_set = NULL;
+ }
}
EXPORT_SYMBOL_GPL(md_stop);
--
2.16.3