From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2B7E8C433F5 for ; Mon, 28 Feb 2022 08:59:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234112AbiB1I7j (ORCPT ); Mon, 28 Feb 2022 03:59:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60414 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230133AbiB1I7i (ORCPT ); Mon, 28 Feb 2022 03:59:38 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ECE063CFFB for ; Mon, 28 Feb 2022 00:58:59 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id A3411B80DD3 for ; Mon, 28 Feb 2022 08:58:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0DC4CC340E7; Mon, 28 Feb 2022 08:58:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1646038737; bh=0tUNz7OjRASBk6VKHeYd86y1AE5PxXA2v4V3RERJ/t4=; h=Subject:To:Cc:From:Date:From; b=KX3c1y84qfTkVZCOCZD4oUhFXYuoyHJS7mg5pwjFAEqcGz7DLkCzs+j9w9uGa0YXj CflnlF9gWiKVEDQhVPIRYHvwxZOzQz/vfmLvbkBSiVUY/IVBW4YUELqStxlUgWrWB+ RZBmhHNrHytooL7xOw1UKkHazUmDkLSheb2q0EyU= Subject: FAILED: patch "[PATCH] memblock: use kfree() to release kmalloced memblock regions" failed to apply to 4.19-stable tree To: linmiaohe@huawei.com, rppt@linux.ibm.com Cc: From: Date: Mon, 28 Feb 2022 09:58:44 +0100 Message-ID: <164603872415262@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From c94afc46cae7ad41b2ad6a99368147879f4b0e56 Mon Sep 17 00:00:00 2001 From: Miaohe Lin Date: Thu, 17 Feb 2022 22:53:27 +0800 Subject: [PATCH] memblock: use kfree() to release kmalloced memblock regions memblock.{reserved,memory}.regions may be allocated using kmalloc() in memblock_double_array(). Use kfree() to release these kmalloced regions indicated by memblock_{reserved,memory}_in_slab. Signed-off-by: Miaohe Lin Fixes: 3010f876500f ("mm: discard memblock data later") Signed-off-by: Mike Rapoport diff --git a/mm/memblock.c b/mm/memblock.c index 1018e50566f3..b12a364f2766 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -366,14 +366,20 @@ void __init memblock_discard(void) addr = __pa(memblock.reserved.regions); size = PAGE_ALIGN(sizeof(struct memblock_region) * memblock.reserved.max); - memblock_free_late(addr, size); + if (memblock_reserved_in_slab) + kfree(memblock.reserved.regions); + else + memblock_free_late(addr, size); } if (memblock.memory.regions != memblock_memory_init_regions) { addr = __pa(memblock.memory.regions); size = PAGE_ALIGN(sizeof(struct memblock_region) * memblock.memory.max); - memblock_free_late(addr, size); + if (memblock_memory_in_slab) + kfree(memblock.memory.regions); + else + memblock_free_late(addr, size); } memblock_memory = NULL;