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); } _
