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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 43CA6C433E0 for ; Mon, 29 Jun 2020 20:22:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2102C20656 for ; Mon, 29 Jun 2020 20:22:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593462177; bh=eISxDRQGqvnifGfBTu9Mpzrk1QNYu/9Er5waF/zjx+Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=MwsZlrMvjc2QybuVXLKyNtwiB7SYEWmryigaPXGkBL066DjWW/rGvWrgusjUb3kSj gJYIviUR2zAcyu5UGdwAez+UOAvf5CHk9QKzu5TU773axkylPmHnZY08ksxjGKUVR0 YIuhL4jxPEJaVN8glRjPgwk+QEXK2ECkkapDwBA8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729342AbgF2UWz (ORCPT ); Mon, 29 Jun 2020 16:22:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:37018 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732577AbgF2TZc (ORCPT ); Mon, 29 Jun 2020 15:25:32 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0673925454; Mon, 29 Jun 2020 15:43:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593445409; bh=eISxDRQGqvnifGfBTu9Mpzrk1QNYu/9Er5waF/zjx+Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rIAoB9INVFJdkfSCOTm1aUndyFzZtrerfHMQA7xqzwPHV/G++oCwi2T/ebbD42IrC 1EYAnpCEp3aDTQ0wJbVnYaIyCE+X+j1IuPvx54VmO+aHUFkNOAQqDMTPqOqOzpPRae jq+bvXq0BwMCZgVo8vYxr7eFlpbQdcvvgKIpUWRo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Zhang Xiaoxu , Hulk Robot , Pavel Shilovsky , Steve French , Sasha Levin Subject: [PATCH 4.9 160/191] cifs/smb3: Fix data inconsistent when zero file range Date: Mon, 29 Jun 2020 11:39:36 -0400 Message-Id: <20200629154007.2495120-161-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200629154007.2495120-1-sashal@kernel.org> References: <20200629154007.2495120-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.9.229-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-4.9.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 4.9.229-rc1 X-KernelTest-Deadline: 2020-07-01T15:39+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Zhang Xiaoxu [ Upstream commit 6b69040247e14b43419a520f841f2b3052833df9 ] CIFS implements the fallocate(FALLOC_FL_ZERO_RANGE) with send SMB ioctl(FSCTL_SET_ZERO_DATA) to server. It just set the range of the remote file to zero, but local page cache not update, then the data inconsistent with server, which leads the xfstest generic/008 failed. So we need to remove the local page caches before send SMB ioctl(FSCTL_SET_ZERO_DATA) to server. After next read, it will re-cache it. Fixes: 30175628bf7f5 ("[SMB3] Enable fallocate -z support for SMB3 mounts") Reported-by: Hulk Robot Signed-off-by: Zhang Xiaoxu Reviewed-by: Pavel Shilovsky Cc: stable@vger.kernel.org # v3.17 Signed-off-by: Steve French Signed-off-by: Sasha Levin --- fs/cifs/smb2ops.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 9c29317deef56..edd4c7292be00 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -1220,6 +1220,12 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon, inode = d_inode(cfile->dentry); cifsi = CIFS_I(inode); + /* + * We zero the range through ioctl, so we need remove the page caches + * first, otherwise the data may be inconsistent with the server. + */ + truncate_pagecache_range(inode, offset, offset + len - 1); + /* if file not oplocked can't be sure whether asking to extend size */ if (!CIFS_CACHE_READ(cifsi)) if (keep_size == false) -- 2.25.1