linux-kernel - [PATCH -next] mm/damon: fix error return code in damon_reclaim

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Date:   Mon, 25 Oct 2021 20:45:00 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>
CC:     <akpm@...ux-foundation.org>, <sj@...nel.org>
Subject: [PATCH -next] mm/damon: fix error return code in damon_reclaim_turn()

If damon_reclaim_new_scheme() fails, it should return
error code in damon_reclaim_turn()

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 mm/damon/reclaim.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c
index f5ae4c422555..dc1485044eaf 100644
--- a/mm/damon/reclaim.c
+++ b/mm/damon/reclaim.c
@@ -292,8 +292,10 @@ static int damon_reclaim_turn(bool on)
 
 	/* Will be freed by 'damon_set_schemes()' below */
 	scheme = damon_reclaim_new_scheme();
-	if (!scheme)
+	if (!scheme) {
+		err = -ENOMEM;
 		goto free_region_out;
+	}
 	err = damon_set_schemes(ctx, &scheme, 1);
 	if (err)
 		goto free_scheme_out;
-- 
2.25.1