[patch 064/192] mm/z3fold: fix potential memory leak in z3fold_destroy_pool()

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From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: mm/z3fold: fix potential memory leak in z3fold_destroy_pool()

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@xxxxxxxxxx
Fixes: d30561c56f41 ("z3fold: use per-cpu unbuddied lists")
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Reviewed-by: Vitaly Wool <vitaly.wool@xxxxxxxxxxxx>
Cc: Hillf Danton <hdanton@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/z3fold.c |    1 +
 1 file changed, 1 insertion(+)

--- a/mm/z3fold.c~mm-z3fold-fix-potential-memory-leak-in-z3fold_destroy_pool
+++ a/mm/z3fold.c
@@ -1046,6 +1046,7 @@ static void z3fold_destroy_pool(struct z
 	destroy_workqueue(pool->compact_wq);
 	destroy_workqueue(pool->release_wq);
 	z3fold_unregister_migration(pool);
+	free_percpu(pool->unbuddied);
 	kfree(pool);
 }
 
_



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