+ kho-init-alloc-tags-when-restoring-pages-from-reserved-memory.patch added to mm-hotfixes-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: kho: init alloc tags when restoring pages from reserved memory
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     kho-init-alloc-tags-when-restoring-pages-from-reserved-memory.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kho-init-alloc-tags-when-restoring-pages-from-reserved-memory.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: Ran Xiaokai <ran.xiaokai@zte.com.cn>
Subject: kho: init alloc tags when restoring pages from reserved memory
Date: Fri, 9 Jan 2026 10:42:51 +0000

Memblock pages (including reserved memory) should have their allocation
tags initialized to CODETAG_EMPTY via clear_page_tag_ref() before being
released to the page allocator.  When kho restores pages through
kho_restore_page(), missing this call causes mismatched
allocation/deallocation tracking and warning message: alloc_tag was not
set.

Add missing clear_page_tag_ref() annotation in kho_restore_page() to
fix this.

Link: https://lkml.kernel.org/r/20260109104251.157767-1-ranxiaokai627@163.com
Signed-off-by: Ran Xiaokai <ran.xiaokai@zte.com.cn>
Cc: Alexander Graf <graf@amazon.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/liveupdate/kexec_handover.c |    1 +
 1 file changed, 1 insertion(+)

--- a/kernel/liveupdate/kexec_handover.c~kho-init-alloc-tags-when-restoring-pages-from-reserved-memory
+++ a/kernel/liveupdate/kexec_handover.c
@@ -255,6 +255,7 @@ static struct page *kho_restore_page(phy
 	if (is_folio && info.order)
 		prep_compound_page(page, info.order);
 
+	clear_page_tag_ref(page);
 	adjust_managed_page_count(page, nr_pages);
 	return page;
 }
_

Patches currently in -mm which might be from ran.xiaokai@zte.com.cn are

kho-init-alloc-tags-when-restoring-pages-from-reserved-memory.patch