+ mm-z3fold-fix-potential-memory-leak-in-z3fold_destroy_pool.patch added to -mm tree

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The patch titled
     Subject: mm/z3fold: fix potential memory leak in z3fold_destroy_pool()
has been added to the -mm tree.  Its filename is
     mm-z3fold-fix-potential-memory-leak-in-z3fold_destroy_pool.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-z3fold-fix-potential-memory-leak-in-z3fold_destroy_pool.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-z3fold-fix-potential-memory-leak-in-z3fold_destroy_pool.patch

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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);
 }
 
_

Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are

mm-swapfile-use-percpu_ref-to-serialize-against-concurrent-swapoff.patch
swap-fix-do_swap_page-race-with-swapoff.patch
mm-swap-remove-confusing-checking-for-non_swap_entry-in-swap_ra_info.patch
mm-shmem-fix-shmem_swapin-race-with-swapoff.patch
mm-swapfile-move-get_swap_page_of_type-under-config_hibernation.patch
mm-swapfile-move-get_swap_page_of_type-under-config_hibernation-fix.patch
mm-swapfile-move-get_swap_page_of_type-under-config_hibernation-fix-2.patch
mm-swap-remove-unused-local-variable-nr_shadows.patch
mm-swap_slotsc-delete-meaningless-forward-declarations.patch
mm-huge_memoryc-remove-dedicated-macro-hpage_cache_index_mask.patch
mm-huge_memoryc-use-page-deferred_list.patch
mm-huge_memoryc-add-missing-read-only-thp-checking-in-transparent_hugepage_enabled.patch
mm-huge_memoryc-add-missing-read-only-thp-checking-in-transparent_hugepage_enabled-v4.patch
mm-huge_memoryc-remove-unnecessary-tlb_remove_page_size-for-huge-zero-pmd.patch
mm-huge_memoryc-dont-discard-hugepage-if-other-processes-are-mapping-it.patch
mm-z3fold-define-macro-nchunks-as-total_chunks-zhdr_chunks.patch
mm-z3fold-avoid-possible-underflow-in-z3fold_alloc.patch
mm-z3fold-remove-magic-number-in-z3fold_create_pool.patch
mm-z3fold-remove-unused-function-handle_to_z3fold_header.patch
mm-z3fold-fix-potential-memory-leak-in-z3fold_destroy_pool.patch
mm-z3fold-use-release_z3fold_page_locked-to-release-locked-z3fold-page.patch
mm-zbud-reuse-unbuddied-as-buddied-in-zbud_pool.patch
mm-zbud-dont-export-any-zbud-api.patch
mm-zswapc-remove-unused-function-zswap_debugfs_exit.patch
mm-zswapc-avoid-unnecessary-copy-in-at-map-time.patch
mm-zswapc-fix-two-bugs-in-zswap_writeback_entry.patch




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