| From 05924487af1026a4ac76496957d8c919fc8afdf3 Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Wed, 30 Jun 2021 18:50:36 -0700 |
| Subject: mm/z3fold: fix potential memory leak in z3fold_destroy_pool() |
| |
| From: Miaohe Lin <linmiaohe@huawei.com> |
| |
| [ Upstream commit dac0d1cfda56472378d330b1b76b9973557a7b1d ] |
| |
| There is a memory leak in z3fold_destroy_pool() as it forgets to |
| free_percpu pool->unbuddied. Call free_percpu for pool->unbuddied to fix |
| this issue. |
| |
| Link: https://lkml.kernel.org/r/20210619093151.1492174-6-linmiaohe@huawei.com |
| Fixes: d30561c56f41 ("z3fold: use per-cpu unbuddied lists") |
| Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> |
| Reviewed-by: Vitaly Wool <vitaly.wool@konsulko.com> |
| Cc: Hillf Danton <hdanton@sina.com> |
| Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
| Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| mm/z3fold.c | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| diff --git a/mm/z3fold.c b/mm/z3fold.c |
| index 6d3d3f698ebb..e97143713021 100644 |
| --- a/mm/z3fold.c |
| +++ b/mm/z3fold.c |
| @@ -839,6 +839,7 @@ 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); |
| } |
| |
| -- |
| 2.30.2 |
| |