Forwarded: [PATCH] Test for a forgotten shrink_stripes in the grow_stripes.

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Subject: [PATCH] Test for a forgotten shrink_stripes in the grow_stripes.
Author: nsvatoslav515@gmail.com

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 6812ce4e4379

Signed-off-by: Svyatoslav Nikolenko <nsvatoslav515@gmail.com>
---
 drivers/md/raid5.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index b91545ce090d..326409ca0cfb 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+/// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * raid5.c : Multiple Devices driver for Linux
  *	   Copyright (C) 1996, 1997 Ingo Molnar, Miguel de Icaza, Gadi Oxman
@@ -2441,9 +2441,12 @@ static int grow_stripes(struct r5conf *conf, int num)
 	conf->pool_size = devs;
 	while (num--)
 		if (!grow_one_stripe(conf, GFP_KERNEL))
-			return 1;
+			goto err;
 
 	return 0;
+err:
+	shrink_stripes(conf);
+	return 1;
 }
 
 /**
-- 
2.47.3