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/mm-memremap-fix-missing-call-to-untrack_pfn-in-pagemap_range.patch
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@xxxxxxxxxx>
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@xxxxxxxxxx
Fixes: bca3feaa0764 ("mm/memory_hotplug: prevalidate the address range being added with platform")
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Acked-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxx 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
