From: Miaohe Lin <linmiaohe@huawei.com>
To: <akpm@linux-foundation.org>
Cc: <vitalywool@gmail.com>, <linux-kernel@vger.kernel.org>,
<linux-mm@kvack.org>, <linmiaohe@huawei.com>
Subject: [PATCH 5/6] mm/z3fold: fix potential memory leak in z3fold_destroy_pool()
Date: Sat, 19 Jun 2021 17:31:50 +0800 [thread overview]
Message-ID: <20210619093151.1492174-6-linmiaohe@huawei.com> (raw)
In-Reply-To: <20210619093151.1492174-1-linmiaohe@huawei.com>
There is a memoryleak in z3fold_destroy_pool() as it forgets to free_percpu
pool->unbuddied. Call free_percpu for pool->unbuddied to fix this issue.
Fixes: d30561c56f41 ("z3fold: use per-cpu unbuddied lists")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
mm/z3fold.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/z3fold.c b/mm/z3fold.c
index bab08c08bf19..196d886a3436 100644
--- a/mm/z3fold.c
+++ b/mm/z3fold.c
@@ -1048,6 +1048,7 @@ static void z3fold_destroy_pool(struct z3fold_pool *pool)
destroy_workqueue(pool->compact_wq);
destroy_workqueue(pool->release_wq);
z3fold_unregister_migration(pool);
+ free_percpu(pool->unbuddied);
kfree(pool);
}
--
2.23.0
next prev parent reply other threads:[~2021-06-19 9:32 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-19 9:31 [PATCH 0/6] Cleanup and fixup for z3fold Miaohe Lin
2021-06-19 9:31 ` [PATCH 1/6] mm/z3fold: define macro NCHUNKS as TOTAL_CHUNKS - ZHDR_CHUNKS Miaohe Lin
2021-06-19 9:31 ` [PATCH 2/6] mm/z3fold: avoid possible underflow in z3fold_alloc() Miaohe Lin
2021-06-19 9:31 ` [PATCH 3/6] mm/z3fold: remove magic number in z3fold_create_pool() Miaohe Lin
2021-06-19 9:31 ` [PATCH 4/6] mm/z3fold: remove unused function handle_to_z3fold_header() Miaohe Lin
2021-06-19 9:31 ` Miaohe Lin [this message]
2021-06-19 9:31 ` [PATCH 6/6] mm/z3fold: use release_z3fold_page_locked() to release locked z3fold page Miaohe Lin
[not found] ` <20210620002604.1575-1-hdanton@sina.com>
2021-06-22 13:49 ` Miaohe Lin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210619093151.1492174-6-linmiaohe@huawei.com \
--to=linmiaohe@huawei.com \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=vitalywool@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).