From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DDAB71552FD for ; Sun, 11 Jan 2026 00:30:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768091412; cv=none; b=n4KT1U0ONLAqyYmwbV0UD23qO4Ene6vegLawUY1JxKpg8OMEjtGEyTdB9QJPS3OcHI8dRzNRn7ljR3Lwh2Goa01evfv2pL35CEejP5a9kM+zSy2ShvBAeFi3/4T+qTCjVjBIc55/R8MXzyEcPoe0Jmx6MUdL4lqqDR5Fs0rpzcg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768091412; c=relaxed/simple; bh=31w67hxV5QEgl/VSxfNcNDCcEEvEPDBwA2YfGBnBGtI=; h=Date:To:From:Subject:Message-Id; b=WIBZUKNIqqOC2QVpvNdWj1pZMk7IYvUUsjQAGRsINDUbnQ9aBIg4qRegbxkC3blCoNf2HcpzkSrVSmWsxtJv4bz21eXXKJmyc2VqPDj+y2PXPKcoEqN2kAZjcHpPY2fREKy2hXI0qN3daKw1Wvnt8RUNwc2y1znpXSDWBB+9Pzg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=jNYDHa9y; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="jNYDHa9y" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 772F0C4CEF1; Sun, 11 Jan 2026 00:30:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1768091412; bh=31w67hxV5QEgl/VSxfNcNDCcEEvEPDBwA2YfGBnBGtI=; h=Date:To:From:Subject:From; b=jNYDHa9yOul/eitNeGXDEAvClbyZts62yFn+B96GaxFYvS23EysvcOEY7PcUDBDyq 6r9U5sN3FsjNtYj/e5QkAYvA0b5x+/ffzjfEU9o30FFInMk+YmNoLc1lihBJZhy7Hm HHh50HCkLUJMku/L1Q+86VtgtEyGl0wLXYFnFQxQ= Date: Sat, 10 Jan 2026 16:30:11 -0800 To: mm-commits@vger.kernel.org,surenb@google.com,rppt@kernel.org,pratyush@kernel.org,pasha.tatashin@soleen.com,graf@amazon.com,ran.xiaokai@zte.com.cn,akpm@linux-foundation.org From: Andrew Morton Subject: + kho-init-alloc-tags-when-restoring-pages-from-reserved-memory.patch added to mm-hotfixes-unstable branch Message-Id: <20260111003012.772F0C4CEF1@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: Ran Xiaokai 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 Cc: Alexander Graf Cc: Mike Rapoport Cc: Pasha Tatashin Cc: Pratyush Yadav Cc: Suren Baghdasaryan Signed-off-by: Andrew Morton --- 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