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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 184A3C54E7E for ; Sat, 9 May 2020 23:46:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E3EBA21473 for ; Sat, 9 May 2020 23:46:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728825AbgEIXqD (ORCPT ); Sat, 9 May 2020 19:46:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47410 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1728344AbgEIXp7 (ORCPT ); Sat, 9 May 2020 19:45:59 -0400 Received: from ZenIV.linux.org.uk (zeniv.linux.org.uk [IPv6:2002:c35c:fd02::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C1036C061A0C; Sat, 9 May 2020 16:45:59 -0700 (PDT) Received: from viro by ZenIV.linux.org.uk with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jXZAM-004iRM-Em; Sat, 09 May 2020 23:45:58 +0000 From: Al Viro To: linux-kernel@vger.kernel.org Cc: Linus Torvalds , linux-fsdevel@vger.kernel.org Subject: [PATCH 04/20] FIEMAP: don't bother with access_ok() Date: Sun, 10 May 2020 00:45:41 +0100 Message-Id: <20200509234557.1124086-4-viro@ZenIV.linux.org.uk> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20200509234557.1124086-1-viro@ZenIV.linux.org.uk> References: <20200509234124.GM23230@ZenIV.linux.org.uk> <20200509234557.1124086-1-viro@ZenIV.linux.org.uk> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Al Viro we use copy_to_user() on that thing anyway (and always had). Signed-off-by: Al Viro --- fs/ext4/ioctl.c | 5 ----- fs/ioctl.c | 5 ----- 2 files changed, 10 deletions(-) diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index bfc1281fc4cb..a0afd0338722 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -784,11 +784,6 @@ static int ext4_ioctl_get_es_cache(struct file *filp, unsigned long arg) fieinfo.fi_extents_max = fiemap.fm_extent_count; fieinfo.fi_extents_start = ufiemap->fm_extents; - if (fiemap.fm_extent_count != 0 && - !access_ok(fieinfo.fi_extents_start, - fieinfo.fi_extents_max * sizeof(struct fiemap_extent))) - return -EFAULT; - if (fieinfo.fi_flags & FIEMAP_FLAG_SYNC) filemap_write_and_wait(inode->i_mapping); diff --git a/fs/ioctl.c b/fs/ioctl.c index 282d45be6f45..f8181e2c2168 100644 --- a/fs/ioctl.c +++ b/fs/ioctl.c @@ -215,11 +215,6 @@ static int ioctl_fiemap(struct file *filp, struct fiemap __user *ufiemap) fieinfo.fi_extents_max = fiemap.fm_extent_count; fieinfo.fi_extents_start = ufiemap->fm_extents; - if (fiemap.fm_extent_count != 0 && - !access_ok(fieinfo.fi_extents_start, - fieinfo.fi_extents_max * sizeof(struct fiemap_extent))) - return -EFAULT; - if (fieinfo.fi_flags & FIEMAP_FLAG_SYNC) filemap_write_and_wait(inode->i_mapping); -- 2.11.0