From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Henry Burns <henryburns@google.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
"Gustavo A. R. Silva" <gustavo@embeddedor.com>
Subject: [PATCH] mm/z3fold.c: fix lock/unlock imbalance in z3fold_page_isolate
Date: Sun, 25 Aug 2019 22:06:34 -0500 [thread overview]
Message-ID: <20190826030634.GA4379@embeddedor> (raw)
Fix lock/unlock imbalance by unlocking *zhdr* before return.
Addresses-Coverity-ID: 1452811 ("Missing unlock")
Fixes: d776aaa9895e ("mm/z3fold.c: fix race between migration and destruction")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
mm/z3fold.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/z3fold.c b/mm/z3fold.c
index e31cd9bd4ed5..75b7962439ff 100644
--- a/mm/z3fold.c
+++ b/mm/z3fold.c
@@ -1406,6 +1406,7 @@ static bool z3fold_page_isolate(struct page *page, isolate_mode_t mode)
* should freak out.
*/
WARN(1, "Z3fold is experiencing kref problems\n");
+ z3fold_page_unlock(zhdr);
return false;
}
z3fold_page_unlock(zhdr);
--
2.23.0
next reply other threads:[~2019-08-26 3:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-26 3:06 Gustavo A. R. Silva [this message]
2019-08-26 23:05 ` [PATCH] mm/z3fold.c: fix lock/unlock imbalance in z3fold_page_isolate Andrew Morton
2019-08-29 19:14 ` Gustavo A. R. Silva
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