lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <319012f0811030734s6d14b2b3t13c32a41ac48e852@mail.gmail.com>
Date:	Mon, 3 Nov 2008 16:34:10 +0100
From:	Cryptooctoploid <cryptooctoploid@...il.com>
To:	"Theodore Tso" <tytso@....edu>
Cc:	"Roc Valles" <vallesroc@...il.com>, linux-ext4@...r.kernel.org
Subject: Re: data corruption with ext4 (from 2.6.27.4) exposed by rtorrent

On Mon, Nov 3, 2008 at 2:40 PM, Theodore Tso <tytso@....edu> wrote:
> On Mon, Nov 03, 2008 at 12:42:11PM +0000, Roc Valles wrote:
>> Some person already reported this. I'm having the same problem.
>> http://marc.info/?l=linux-ext4&m=122557056518246&w=2
>>
>> rtorrent is a bittorrent client that makes heavy use of mmap instead
>> of read/write to avoid needless duplication of data. It has exposed
>> other bugs in the past (mmap bug in 2.6.19).
>> http://libtorrent.rakshasa.no
>> Downloading a big torrent (>2GB) with rtorrent triggers it more times
>> than not. The bigger the torrent, the higher the likeliness of
>> failure. When the torrent is finished, if a hash check is forced by
>> pressing control-r on the torrent, some blocks will fail.

I have set up a debug torrent at:
http://www.demonoid.com/files/details/1676328/?rel=1225725960

It contains four identical files that were generated with:
dd if=/dev/zero of=zero.test0 count=1M

My upload speed is limited (512 kbit/s), but I hope this may help.
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ