The patch titled Subject: mm/memremap: fix missing call to untrack_pfn() in pagemap_range() has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-memremap-fix-missing-call-to-untrack_pfn-in-pagemap_range.patch

This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...

This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------ From: Miaohe Lin linmiaohe@huawei.com Subject: mm/memremap: fix missing call to untrack_pfn() in pagemap_range() Date: Tue, 31 May 2022 20:26:43 +0800

We forget to call untrack_pfn() to pair with track_pfn_remap() when range is not allowed to hotplug. Fix it by jump err_kasan.

Link: https://lkml.kernel.org/r/20220531122643.25249-1-linmiaohe@huawei.com Fixes: bca3feaa0764 ("mm/memory_hotplug: prevalidate the address range being added with platform") Signed-off-by: Miaohe Lin linmiaohe@huawei.com Reviewed-by: David Hildenbrand david@redhat.com Acked-by: Muchun Song songmuchun@bytedance.com Cc: Anshuman Khandual anshuman.khandual@arm.com Cc: Oscar Salvador osalvador@suse.de Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

mm/memremap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/memremap.c~mm-memremap-fix-missing-call-to-untrack_pfn-in-pagemap_range +++ a/mm/memremap.c @@ -214,7 +214,7 @@ static int pagemap_range(struct dev_page

if (!mhp_range_allowed(range->start, range_len(range), !is_private)) { error = -EINVAL; - goto err_pfn_remap; + goto err_kasan; }

mem_hotplug_begin(); _

Patches currently in -mm which might be from linmiaohe@huawei.com are

maintainers-add-maintainer-information-for-z3fold.patch mm-memremap-fix-missing-call-to-untrack_pfn-in-pagemap_range.patch mm-shmemc-clean-up-comment-of-shmem_swapin_folio.patch mm-reduce-the-rcu-lock-duration.patch mm-migration-remove-unneeded-lock-page-and-pagemovable-check.patch mm-migration-return-errno-when-isolate_huge_page-failed.patch mm-migration-fix-potential-pte_unmap-on-an-not-mapped-pte.patch