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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9FDE5C433EF for ; Mon, 7 Feb 2022 13:57:01 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0BDE06B0074; Mon, 7 Feb 2022 08:57:01 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 06E396B0075; Mon, 7 Feb 2022 08:57:01 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EC5716B0078; Mon, 7 Feb 2022 08:57:00 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0199.hostedemail.com [216.40.44.199]) by kanga.kvack.org (Postfix) with ESMTP id DCAED6B0074 for ; Mon, 7 Feb 2022 08:57:00 -0500 (EST) Received: from smtpin05.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 80FC992EB6 for ; Mon, 7 Feb 2022 13:57:00 +0000 (UTC) X-FDA: 79116135000.05.C3946EB Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by imf04.hostedemail.com (Postfix) with ESMTP id A449240007 for ; Mon, 7 Feb 2022 13:56:59 +0000 (UTC) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4JsnjT218xzcclP; Mon, 7 Feb 2022 21:55:57 +0800 (CST) Received: from huawei.com (10.175.124.27) by canpemm500002.china.huawei.com (7.192.104.244) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Mon, 7 Feb 2022 21:56:56 +0800 From: Miaohe Lin To: CC: , , , , , Subject: [PATCH] mm/memory_hotplug: fix kfree() of bootmem memory Date: Mon, 7 Feb 2022 21:56:18 +0800 Message-ID: <20220207135618.17231-1-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To canpemm500002.china.huawei.com (7.192.104.244) X-CFilter-Loop: Reflected Authentication-Results: imf04.hostedemail.com; dkim=none; spf=pass (imf04.hostedemail.com: domain of linmiaohe@huawei.com designates 45.249.212.187 as permitted sender) smtp.mailfrom=linmiaohe@huawei.com; dmarc=pass (policy=quarantine) header.from=huawei.com X-Rspam-User: nil X-Rspamd-Queue-Id: A449240007 X-Stat-Signature: ruucxh3n1pa6bnd16w1xccmuw8szwbrd X-Rspamd-Server: rspam12 X-HE-Tag: 1644242219-305014 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: We can't use kfree() to release the resource as it might come from bootme= m. Use release_mem_region() instead. Fixes: ebff7d8f270d ("mem hotunplug: fix kfree() of bootmem memory") Signed-off-by: Miaohe Lin --- mm/memory_hotplug.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 7dc7e12302db..dc570772b4b1 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -216,8 +216,7 @@ static void release_memory_resource(struct resource *= res) { if (!res) return; - release_resource(res); - kfree(res); + release_mem_region(res->start, resource_size(res)); } =20 static int check_pfn_span(unsigned long pfn, unsigned long nr_pages, --=20 2.23.0