From owner-freebsd-bugs@FreeBSD.ORG Mon Sep 8 17:50:03 2008 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 07573106566C for ; Mon, 8 Sep 2008 17:50:03 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id DFEEF8FC1A for ; Mon, 8 Sep 2008 17:50:02 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.2/8.14.2) with ESMTP id m88Ho24I029039 for ; Mon, 8 Sep 2008 17:50:02 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.2/8.14.1/Submit) id m88Ho24h029038; Mon, 8 Sep 2008 17:50:02 GMT (envelope-from gnats) Resent-Date: Mon, 8 Sep 2008 17:50:02 GMT Resent-Message-Id: <200809081750.m88Ho24h029038@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Anton Yuzhaninov Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A1FDD106564A for ; Mon, 8 Sep 2008 17:45:45 +0000 (UTC) (envelope-from citrin@mx3.rambler.ru) Received: from mx-carp-ext.rambler.ru (mx-carp-ext.rambler.ru [81.19.66.237]) by mx1.freebsd.org (Postfix) with ESMTP id 6262E8FC1D for ; Mon, 8 Sep 2008 17:45:45 +0000 (UTC) (envelope-from citrin@mx3.rambler.ru) Received: by mx3.rambler.ru (Postfix, from userid 1072) id 6F01C5C3B; Mon, 8 Sep 2008 21:34:36 +0400 (MSD) Message-Id: <20080908173436.6F01C5C3B@mx3.rambler.ru> Date: Mon, 8 Sep 2008 21:34:36 +0400 (MSD) From: Anton Yuzhaninov To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Cc: Subject: kern/127213: sendfile on tmpfs data corruption X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Sep 2008 17:50:03 -0000 >Number: 127213 >Category: kern >Synopsis: sendfile on tmpfs data corruption >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Sep 08 17:50:02 UTC 2008 >Closed-Date: >Last-Modified: >Originator: Anton Yuzhaninov >Release: FreeBSD 7.1-PRERELEASE amd64 >Organization: Rambler >Environment: System: FreeBSD mx3.rambler.ru 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #1: Fri Sep 5 21:15:43 MSD 2008 root@mx3.rambler.ru:/usr/obj/usr/src/sys/MAIL amd64 >Description: sendfile(2) currupts data for files on tmpfs >How-To-Repeat: 1. Create tmpfs and write test file # mount -t tmpfs tmpfs /spool/tmpfs # echo 'this is test file' > /spool/tmpfs/tt # cat /spool/tmpfs/tt this is test file 2. Transfer this file using sendfile. E. g. using web server from port www/nginx # cat nginx.conf events { worker_connections 1024; } http { default_type application/octet-stream; access_log off; sendfile on; server { listen 8081; location / { root /spool/tmpfs; } } } # nginx -c nginx.conf Content of fetched file will be different garbage on each request: # fetch -qo - http://127.0.0.1:8081/tt | hd 00000000 d4 98 7a 00 08 00 00 00 dc 98 7a 00 08 00 00 00 |Ô˜z.....ܘz.....| 00000010 e4 98 |ä˜| 00000012 # fetch -qo - http://127.0.0.1:8081/tt | md5 ff035bff2dcf972ee7dfd023455997ef # fetch -qo - http://127.0.0.1:8081/tt | md5 bb07cd1a0ede3c7af24e4a86a14b0493 # fetch -qo - http://127.0.0.1:8081/tt | md5 e84539257c2650da866a186435acc93d With sendfile disbled in nginx.conf file is not corrupted, but we need sendfile support for other application (where only sendfile supported). >Fix: Not known. >Release-Note: >Audit-Trail: >Unformatted: