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 E2AA923F431; Mon, 19 Jan 2026 20:30:54 +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=1768854655; cv=none; b=bvppOIWUyRT8hvJWZTVb8am9l6LsZfB9MFYJ+L4w1ERBROebn8xcrCTeb+DeUeUFl7KWJQ1sk1bh1EzojAcnc/lAzR5O4Y/AO8ILe5XG4GlzTphS0IdXAyN6JbfLiy6Tj/piF736CJmOP8g+jHrHPkQC8Wwp3EVwoqMhvp1dJpE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768854655; c=relaxed/simple; bh=R57FQTCTmIxrt5+ejU5fbGLnQES3MDAEyI81aaKe/ZI=; h=Date:To:From:Subject:Message-Id; b=BcnYW5RPAICfhOwYuIOaXjF1WSUtrq7f8FBS4/2kFK3SeQCnh0Ohblcb1ySTpoGa+z2vK9SrymmnV7OdU1eQQEuYLqZUBRFxD/hD09HGzFiJU7j6iuI4ViVYIf3fg1g9PW7CuW0BStBcYulDDwLDuC5Q2RLxyId7Lea3UcBIUhA= 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=cxRQFFdq; 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="cxRQFFdq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 70AE8C116C6; Mon, 19 Jan 2026 20:30:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1768854654; bh=R57FQTCTmIxrt5+ejU5fbGLnQES3MDAEyI81aaKe/ZI=; h=Date:To:From:Subject:From; b=cxRQFFdqrFA29SjQCbZfvfVIcBGrJnuKbdgRQZt6bM8Vi0EkfaUQUn6MuvLxNzaO6 bG6EJZ/usAmV+Niyvmqe+KpMgTrTIWKR6p1oJ2icU/ZD7h/sDvlXBtn9dhe1qI7/vK ydV4pMEvGauLmCYOzScrASO1N8lwX9QnswBZDJUo= Date: Mon, 19 Jan 2026 12:30:53 -0800 To: mm-commits@vger.kernel.org,surenb@google.com,stable@vger.kernel.org,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: [merged mm-hotfixes-stable] kho-init-alloc-tags-when-restoring-pages-from-reserved-memory.patch removed from -mm tree Message-Id: <20260119203054.70AE8C116C6@smtp.kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: kho: init alloc tags when restoring pages from reserved memory has been removed from the -mm tree. Its filename was kho-init-alloc-tags-when-restoring-pages-from-reserved-memory.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ 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 below warning message: alloc_tag was not set WARNING: include/linux/alloc_tag.h:164 at ___free_pages+0xb8/0x260, CPU#1: swapper/0/1 RIP: 0010:___free_pages+0xb8/0x260 kho_restore_vmalloc+0x187/0x2e0 kho_test_init+0x3c4/0xa30 do_one_initcall+0x62/0x2b0 kernel_init_freeable+0x25b/0x480 kernel_init+0x1a/0x1c0 ret_from_fork+0x2d1/0x360 Add missing clear_page_tag_ref() annotation in kho_restore_page() to fix this. Link: https://lkml.kernel.org/r/20260113033403.161869-1-ranxiaokai627@163.com Link: https://lkml.kernel.org/r/20260109104251.157767-1-ranxiaokai627@163.com Fixes: fc33e4b44b27 ("kexec: enable KHO support for memory preservation") Signed-off-by: Ran Xiaokai Reviewed-by: Mike Rapoport (Microsoft) Reviewed-by: Suren Baghdasaryan Reviewed-by: Pasha Tatashin Cc: Alexander Graf Cc: Pratyush Yadav Cc: 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 alloc_tag-fix-rw-permission-issue-when-handling-boot-parameter.patch