This is a note to let you know that I've just added the patch titled
md: call __md_stop_writes in md_stop
to the 4.19-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:
md-call-__md_stop_writes-in-md_stop.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0dd84b319352bb8ba64752d4e45396d8b13e6018 Mon Sep 17 00:00:00 2001
From: Guoqing Jiang <guoqing.jiang@xxxxxxxxx>
Date: Wed, 17 Aug 2022 20:05:14 +0800
Subject: md: call __md_stop_writes in md_stop
From: Guoqing Jiang <guoqing.jiang@xxxxxxxxx>
commit 0dd84b319352bb8ba64752d4e45396d8b13e6018 upstream.
>From the link [1], we can see raid1d was running even after the path
raid_dtr -> md_stop -> __md_stop.
Let's stop write first in destructor to align with normal md-raid to
fix the KASAN issue.
[1]. https://lore.kernel.org/linux-raid/CAPhsuW5gc4AakdGNdF8ubpezAuDLFOYUO_sfMZcec6hQFm8nhg@xxxxxxxxxxxxxx/T/#m7f12bf90481c02c6d2da68c64aeed4779b7df74a
Fixes: 48df498daf62 ("md: move bitmap_destroy to the beginning of __md_stop")
Reported-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Signed-off-by: Guoqing Jiang <guoqing.jiang@xxxxxxxxx>
Signed-off-by: Song Liu <song@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/md.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5937,6 +5937,7 @@ void md_stop(struct mddev *mddev)
/* stop the array and free an attached data structures.
* This is called from dm-raid
*/
+ __md_stop_writes(mddev);
__md_stop(mddev);
bioset_exit(&mddev->bio_set);
bioset_exit(&mddev->sync_set);
Patches currently in stable-queue which might be from guoqing.jiang@xxxxxxxxx are
queue-4.19/md-call-__md_stop_writes-in-md_stop.patch
