From nobody Tue Apr 7 16:55:57 2026 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 639F8ECAAD6 for ; Fri, 26 Aug 2022 09:25:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343957AbiHZJZd (ORCPT ); Fri, 26 Aug 2022 05:25:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55942 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343685AbiHZJZA (ORCPT ); Fri, 26 Aug 2022 05:25:00 -0400 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2D4A952090 for ; Fri, 26 Aug 2022 02:24:57 -0700 (PDT) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.55]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4MDZ8M0VRqz19VLD; Fri, 26 Aug 2022 17:21:23 +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 15.1.2375.24; Fri, 26 Aug 2022 17:24:55 +0800 From: Miaohe Lin To: , , CC: , , Subject: [PATCH 09/10] hugetlb: remove meaningless BUG_ON(huge_pte_none()) Date: Fri, 26 Aug 2022 17:24:21 +0800 Message-ID: <20220826092422.39591-10-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20220826092422.39591-1-linmiaohe@huawei.com> References: <20220826092422.39591-1-linmiaohe@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To canpemm500002.china.huawei.com (7.192.104.244) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" When code reaches here, invalid page would have been accessed if huge pte is none. So this BUG_ON(huge_pte_none()) is meaningless. Remove it. Signed-off-by: Miaohe Lin Reviewed-by: Muchun Song --- mm/hugetlb.c | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index b432a00061e3..0ef26dbdc7f8 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -5374,7 +5374,6 @@ static vm_fault_t hugetlb_wp(struct mm_struct *mm, st= ruct vm_area_struct *vma, u32 hash; =20 put_page(old_page); - BUG_ON(huge_pte_none(pte)); /* * Drop hugetlb_fault_mutex and vma_lock before * unmapping. unmapping needs to hold vma_lock --=20 2.23.0