From owner-freebsd-current@FreeBSD.ORG Mon Aug 6 14:37:42 2007 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D921316A420 for ; Mon, 6 Aug 2007 14:37:42 +0000 (UTC) (envelope-from william88@gmail.com) Received: from rv-out-0910.google.com (rv-out-0910.google.com [209.85.198.188]) by mx1.freebsd.org (Postfix) with ESMTP id B215713C4E8 for ; Mon, 6 Aug 2007 14:37:42 +0000 (UTC) (envelope-from william88@gmail.com) Received: by rv-out-0910.google.com with SMTP id f1so955761rvb for ; Mon, 06 Aug 2007 07:37:42 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=FPmae5PhgNSLJ66o9/Ec0tnVgSCGhepmg7DPaAK3FKdOUSZlT6VWM3y5gHxwOCTuuPFIwh+2IlFyArpRiAEituedG3p1k0zJe68zR6Cw7bMVVGQmzqYJxhoBixoFeb4efk68buF9bH5qcljkTx9FQ2C9YME4yUBi/ka6ksoxu9E= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=tv0So6+X5MU8kY4h+X8cVLyVqE/JJO8rzS/w9q/sdU1ddl4WR6fvnD5dPqwV+sud8y7UwFeyzftVZXOFT7w4ROOyOlUJmQgqR0Qx9+KIT1oobLNCqMUbuFW6ms3ZipVFuE/WE8Xro+NTpPiAHcJMm3DyGMidKhONgvJ1bT23Jtg= Received: by 10.114.66.2 with SMTP id o2mr5685360waa.1186411061942; Mon, 06 Aug 2007 07:37:41 -0700 (PDT) Received: by 10.115.106.9 with HTTP; Mon, 6 Aug 2007 07:37:41 -0700 (PDT) Message-ID: <632825b40708060737r23cc99bbg94a5bc369147cf6e@mail.gmail.com> Date: Mon, 6 Aug 2007 11:37:41 -0300 From: "William Grzybowski" To: freebsd-current@freebsd.org In-Reply-To: <632825b40708060539n1c71221dvcd72062e4b33bb36@mail.gmail.com> MIME-Version: 1.0 References: <20070804142854.GA24178@rzstud5.rz.uni-karlsruhe.de> <632825b40708060539n1c71221dvcd72062e4b33bb36@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Data corruption with msdosfs (rev. 1.172 of msdosfs_vnops.c) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 06 Aug 2007 14:37:43 -0000 On 8/4/07, Philipp Mergenthaler wrote: > > > Hi, > > with rev. 1.172 of msdosfs_vnops.c I see data corruption when reading > files > on a FAT 32 file system. (I didn't try write accesses apart from deleting > some files, which worked ok). The file system is on a IDE disk in an > external USB enclosure and has been created with "newfs_msdos -F 32", > IIRC. > I can use it without problems under FreeBSD-current (prior to July 20th), > Windows XP and Linux. > > The first 0x2000 (usually, but sometimes it's the first 0x3000) bytes of > a file are ok, but then there are some 4kb-blocks from somewhere else. > > Example (hexdump -C of a html file): > 00001fb0 3c 64 69 76 20 63 6c 61 73 73 3d 22 66 6c 6f 61 |
class=3D"floa| > 00001fc0 74 62 72 6b 22 3e 26 6e 62 73 70 3b 3c 2f 64 > 69 |tbrk">  00001fd0 76 3e 0a 3c 2f 64 69 76 3e 0a 0a 3c 2f 64 69 > 76 |v>.
.. 00001fe0 3e 3c 2f 64 69 76 3e 0a 0a 3c 64 69 76 20 69 64 |>.. id| > 00001ff0 3d 22 72 77 66 6f 6f 74 22 20 63 6c 61 73 73 3d |=3D"rwfoot" > class=3D| > 00002000 fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe > fe |=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE| > * > 00002120 52 fe fe fe fe fe fe fe fe fe fe fe fe fe fe > fe |R=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE| > 00002130 fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe > fe |=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE| > * > 00002fd0 fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe > 52 |=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FE=FER| > > > Another example: > 00002fd0 6d 65 68 72 22 20 74 69 74 6c 65 3d 22 6b 6c 69 |mehr" > title=3D"kli| > 00002fe0 63 6b 20 66 26 75 75 6d 6c 3b 72 20 6d 65 68 72 |ck für > mehr| > 00002ff0 22 2f 3e 3c 2f 61 3e 3c 2f 70 3e 0d 0a 09 09 > 09 |"/>

.....| > 00003000 00 00 00 00 00 00 00 00 70 67 5f 73 74 6f 70 > 00 |........pg_stop.| > 00003010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 |................| > 00003020 00 00 00 00 00 00 00 00 6d 78 74 61 72 00 00 > 00 |........mxtar...| > 00003030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 |................| > 00003040 65 73 64 63 74 6c 00 00 00 00 00 00 00 00 00 > 00 |esdctl..........| > [...] > 00007fd0 00 00 00 00 00 00 00 00 68 61 73 68 00 00 00 > 00 |........hash....| > 00007fe0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 |................| > 00007ff0 63 6f 6d 70 73 65 74 00 00 00 00 00 00 00 00 > 00 |compset.........| > 00008000 6f 74 65 72 5f 31 22 20 63 6c 61 73 73 3d 22 73 |oter_1" > class=3D"s| > 00008010 69 74 65 6d 61 70 5f 66 6f 6f 74 65 72 22 3e > 3c |itemap_footer"><| > 00008020 75 6c 3e 3c 6c 69 3e 3c 61 20 68 72 65 66 3d 22 |ul>
  • href=3D"| > > (From byte 03x000 on there is a list of executables from different > directories, including $HOME/bin. I don't think I have a file where these > names occur so close together, so I suspect this is a block from the zsh > process's heap. The content from byte 0x8000 on to the end was correct.) > > > This is the disk's partition table: > ~#fdisk /dev/da1 > ******* Working on device /dev/da1 ******* > parameters extracted from in-core disklabel are: > cylinders=3D4865 heads=3D255 sectors/track=3D63 (16065 blks/cyl) > > Figures below won't work with BIOS for partitions not in cyl 1 > parameters to be used for BIOS calculations are: > cylinders=3D4865 heads=3D255 sectors/track=3D63 (16065 blks/cyl) > > Media sector size is 512 > Warning: BIOS sector numbering starts with sector 1 > Information from DOS bootblock is: > The data for partition 1 is: > sysid 11 (0x0b),(DOS or Windows 95 with 32 bit FAT) > start 63, size 78156162 (38162 Meg), flag 80 (active) > beg: cyl 0/ head 1/ sector 1; > end: cyl 768/ head 254/ sector 63 > The data for partition 2 is: > > The data for partition 3 is: > > The data for partition 4 is: > > > > > Is there any other information I should provide? I am with the same problem. -CURRENT from today. Let me know if i can help providing any information... Bye Bye > Philipp > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to " freebsd-current-unsubscribe@freebsd.or= g > " > --=20 William Grzybowski ------------------------------------------ Jabber: william88 at gmail dot com Msn: william.grz at hotmail dot com Curitiba/PR