From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 2 Mar 2001 15:17:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 2 Mar 2001 15:17:36 -0500 Received: from mailout04.sul.t-online.com ([194.25.134.18]:16655 "EHLO mailout04.sul.t-online.com") by vger.kernel.org with ESMTP id ; Fri, 2 Mar 2001 15:17:24 -0500 Message-ID: <3A9FDD80.FD075386@eikon.tum.de> Date: Fri, 02 Mar 2001 18:50:56 +0100 From: Mario Hermann X-Mailer: Mozilla 4.76 [de] (X11; U; Linux 2.2.18 i686) X-Accept-Language: en MIME-Version: 1.0 To: Jens Axboe CC: "linux-kernel@vger.kernel.org" Subject: Re: report bug: System reboots when accessing a loop-device over a second loop-device with 2.4.2-ac7 In-Reply-To: <3A9E66BB.70FB0C75@eikon.tum.de> <20010301172145.T21518@suse.de> <3A9FADAB.F37E5449@eikon.tum.de> <20010302162824.H408@suse.de> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello! Jens Axboe wrote: > > On Fri, Mar 02 2001, Mario Hermann wrote: > > There is another small bug with the loop over loop problem. Now it works > > fine for > > files but not for Devices: > > > > losetup /dev/loop0 /dev/sr1 > > losetup /dev/loop1 /dev/loop0 > > dd if=/dev/loop1 of=test.dat bs=2048 count=1024 > > Pending miscount, this should fix it. Ok, I did some testing again. What I found: Without crypto: Everything works good! With crypto: I used the ciphers: idea,serbent, aes, blowfish(with small patch in cipher-blowfish send somewhere in the past) Only 2.4.2-ac8 Material: Everything is ok. With old 2.2-Material: Encrypted in the way: losetup -e blowfish /dev/loop0 ./test.file losetup -e serpent /dev/loop1 /dev/loop0 It works perfect too! :-) But with old 2.2 - Material stored on DVD-RAM. losetup -e blowfish /dev/loop0 /dev/sr3 lsoetup -e serpent /dev/loop1 /dev/loop0 it doesn't work. Just garbage comes out of the loop-device. Both, the file on the harddisk and the DVD-RAM are made with 2.2.16 an patch-int-2.2.16.9 and are working there perfectly. I guess that the problem has maybe something to do with the logical block number. Well, for me was the HD-File important to work under 2.4 (DB-on it...) So great thx from me! Hope my testing will help in some way. (will do some more monday afternoon) --- Mario Hermann