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=-10.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 C9AECC43610 for ; Thu, 29 Nov 2018 14:32:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 939B5213A2 for ; Thu, 29 Nov 2018 14:32:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="I35qwmMw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 939B5213A2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389605AbeK3BiX (ORCPT ); Thu, 29 Nov 2018 20:38:23 -0500 Received: from mail.kernel.org ([198.145.29.99]:41908 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389583AbeK3BiX (ORCPT ); Thu, 29 Nov 2018 20:38:23 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 624B92145D; Thu, 29 Nov 2018 14:32:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1543501969; bh=GfLQ1z4738EbdXHKsR7q/bIEHz6PBOJ1dNh9nmk4btI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=I35qwmMw8tRHg7vZFoP1z9k1AzetYgU1bx+qNOTbvxc7O2qmSUUtkFl41TFug8tmj uJaONJ4mURuIi8OE8ZZL/iDKk2AX7w2cjBhGKDCljKYo310rMoGIc+3OHAlSkESf2z Igz8yVUEK/iC7Wht2OsATjM7c4OXBCtYViwyINkQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Yufen Yu , Andrew Morton , Al Viro , Hugh Dickins , William Kucharski , Linus Torvalds , Sasha Levin Subject: [PATCH 4.19 097/110] tmpfs: make lseek(SEEK_DATA/SEK_HOLE) return ENXIO with a negative offset Date: Thu, 29 Nov 2018 15:13:08 +0100 Message-Id: <20181129135925.167058504@linuxfoundation.org> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181129135921.231283053@linuxfoundation.org> References: <20181129135921.231283053@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 1a413646931cb14442065cfc17561e50f5b5bb44 ] Other filesystems such as ext4, f2fs and ubifs all return ENXIO when lseek (SEEK_DATA or SEEK_HOLE) requests a negative offset. man 2 lseek says : EINVAL whence is not valid. Or: the resulting file offset would be : negative, or beyond the end of a seekable device. : : ENXIO whence is SEEK_DATA or SEEK_HOLE, and the file offset is beyond : the end of the file. Make tmpfs return ENXIO under these circumstances as well. After this, tmpfs also passes xfstests's generic/448. [akpm@linux-foundation.org: rewrite changelog] Link: http://lkml.kernel.org/r/1540434176-14349-1-git-send-email-yuyufen@huawei.com Signed-off-by: Yufen Yu Reviewed-by: Andrew Morton Cc: Al Viro Cc: Hugh Dickins Cc: William Kucharski Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin --- mm/shmem.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index 446942677cd4..38d228a30fdc 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2610,9 +2610,7 @@ static loff_t shmem_file_llseek(struct file *file, loff_t offset, int whence) inode_lock(inode); /* We're holding i_mutex so we can access i_size directly */ - if (offset < 0) - offset = -EINVAL; - else if (offset >= inode->i_size) + if (offset < 0 || offset >= inode->i_size) offset = -ENXIO; else { start = offset >> PAGE_SHIFT; -- 2.17.1