From patchwork Fri Jul 28 05:00:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kefeng Wang X-Patchwork-Id: 13331184 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 B6E91C001E0 for ; Fri, 28 Jul 2023 04:48:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233337AbjG1Esg (ORCPT ); Fri, 28 Jul 2023 00:48:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50118 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232982AbjG1Esb (ORCPT ); Fri, 28 Jul 2023 00:48:31 -0400 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 388FF2703; Thu, 27 Jul 2023 21:48:30 -0700 (PDT) Received: from dggpemm100001.china.huawei.com (unknown [172.30.72.57]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4RBw9J50qQz1GDKB; Fri, 28 Jul 2023 12:47:32 +0800 (CST) Received: from localhost.localdomain.localdomain (10.175.113.25) by dggpemm100001.china.huawei.com (7.185.36.93) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Fri, 28 Jul 2023 12:48:26 +0800 From: Kefeng Wang To: Andrew Morton CC: , , , , , , , =?utf-8?q?Christian_G=C3=B6ttsche?= , David Hildenbrand , Felix Kuehling , Alex Deucher , , , , , , , , , , Kefeng Wang Subject: [PATCH v3 3/4] selinux: use vma_is_initial_stack() and vma_is_initial_heap() Date: Fri, 28 Jul 2023 13:00:42 +0800 Message-ID: <20230728050043.59880-4-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230728050043.59880-1-wangkefeng.wang@huawei.com> References: <20230728050043.59880-1-wangkefeng.wang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpemm100001.china.huawei.com (7.185.36.93) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Use the helpers to simplify code. Cc: Paul Moore Cc: Stephen Smalley Cc: Eric Paris Acked-by: Paul Moore Reviewed-by: David Hildenbrand Signed-off-by: Kefeng Wang --- security/selinux/hooks.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index c87b79a29fad..ac582c046c51 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -3800,13 +3800,10 @@ static int selinux_file_mprotect(struct vm_area_struct *vma, if (default_noexec && (prot & PROT_EXEC) && !(vma->vm_flags & VM_EXEC)) { int rc = 0; - if (vma->vm_start >= vma->vm_mm->start_brk && - vma->vm_end <= vma->vm_mm->brk) { + if (vma_is_initial_heap(vma)) { rc = avc_has_perm(sid, sid, SECCLASS_PROCESS, PROCESS__EXECHEAP, NULL); - } else if (!vma->vm_file && - ((vma->vm_start <= vma->vm_mm->start_stack && - vma->vm_end >= vma->vm_mm->start_stack) || + } else if (!vma->vm_file && (vma_is_initial_stack(vma) || vma_is_stack_for_current(vma))) { rc = avc_has_perm(sid, sid, SECCLASS_PROCESS, PROCESS__EXECSTACK, NULL);