Debian Bug report logs - #857341
dosbox: crashes with core=dynamic: DRC64:Unhandled memory reference

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Alberto Garcia <berto@igalia.com>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: dosbox: crashes with core=dynamic: DRC64:Unhandled memory reference

Date: Fri, 10 Mar 2017 10:42:38 +0200

Package: dosbox
Version: 0.74-4.2+b2
Severity: normal

Hi,

DOSBox crashes when the emulated CPU is running in dynamic mode with
the following error message:

   Exit to error: DRC64:Unhandled memory reference

This can be easily reproduce by setting core=dynamic in the config
file (then DOSBox crashes immediately on startup), or with the default
core=auto setting (then DOSBox crashes with programs that run in
protected mode).

This seems to have been fixed upstream, but it can also be worked
around by forcing core=simple or core=normal.

Here's the upstream bug report:

   https://sourceforge.net/p/dosbox/bugs/413/

Here's the bug report in Launchpad:

   https://bugs.launchpad.net/ubuntu/+source/dosbox/+bug/1569438

Regards,

Berto

-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages dosbox depends on:
ii  libasound2                1.1.3-5
ii  libc6                     2.24-9
ii  libgcc1                   1:6.3.0-6
ii  libgl1-mesa-glx [libgl1]  13.0.4-1
ii  libpng16-16               1.6.28-1
ii  libsdl-net1.2             1.2.8-4
ii  libsdl-sound1.2           1.0.3-7+b1
ii  libsdl1.2debian           1.2.15+dfsg1-4
ii  libstdc++6                6.3.0-6
ii  libx11-6                  2:1.6.4-3
ii  zlib1g                    1:1.2.8.dfsg-5

dosbox recommends no packages.

dosbox suggests no packages.

-- no debconf information

Message #10 received at 857341@bugs.debian.org (full text, mbox, reply):

From: Jussi Hukkanen <jussi.hukkanen@gmail.com>

To: 857341@bugs.debian.org

Subject: Re: dosbox: crashes with core=dynamic: DRC64:Unhandled memory reference

Date: Fri, 10 Mar 2017 20:23:13 +0200

I'm seeing this too. Two days ago dosbox was upgraded from 0.74-4.2+b1
to 0.74-4.2+b2. I don't know what has changed in the new version, but
everything used to work fine before the upgrade. This is in Debian
testing, kernel 4.9.0-2-amd64, running on a Core i5-6400.

I'll also point out that using "core=simple" or "core=normal" is not a
viable workaround for me, because they slow DosBox down horrendously.

Message #15 received at 857341@bugs.debian.org (full text, mbox, reply):

From: Samuel Moll <samimoll@googlemail.com>

To: Debian Bug Tracking System <857341@bugs.debian.org>

Subject: Re: dosbox: crashes with core=dynamic: DRC64:Unhandled memory reference

Date: Mon, 17 Apr 2017 15:42:31 +0200

Package: dosbox
Followup-For: Bug #857341

I'm seeing this as well since dosbox was upgraded from 0.74-4+b1 to
0.74-4.2+b2. Downgrading the package via snapshot.debian.org to 0.74-4+b1 was a
viable workaround for me, and enabled me to use the dynamic/auto core again.

Greets,
Samuel


Infos about the workaround:

to downgrade, include the following line in your /etc/apt/sources.list:
deb [check-valid-until=no]
http://snapshot.debian.org/archive/debian/20151007T154528Z/ testing main

and then run

apt-get update
apt-get install dosbox=0.74-4+b1



-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-2-amd64 (SMP w/3 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages dosbox depends on:
ii  libasound2                1.1.3-5
ii  libc6                     2.24-9
ii  libgcc1                   1:6.3.0-12
ii  libgl1-mesa-glx [libgl1]  13.0.6-1
ii  libpng12-0                1.2.54-6
ii  libsdl-net1.2             1.2.8-4
ii  libsdl-sound1.2           1.0.3-7+b3
ii  libsdl1.2debian           1.2.15+dfsg1-4
ii  libstdc++6                6.3.0-12
ii  libx11-6                  2:1.6.4-3
ii  zlib1g                    1:1.2.8.dfsg-5

dosbox recommends no packages.

dosbox suggests no packages.

-- no debconf information

Message #20 received at 857341@bugs.debian.org (full text, mbox, reply):

From: Stefan Ott <stefan@ott.net>

To: 857341@bugs.debian.org

Subject: Re: dosbox: crashes with core=dynamic: DRC64:Unhandled memory reference

Date: Sat, 22 Jul 2017 21:44:44 +0200

[Message part 1 (text/plain, inline)]

I also had this issue, changing the core= setting did not
help, recompiling the package with --disable-dynamic-core
did.

The attached patch changes the build options accordingly.

-- 
Stefan Ott
http://www.ott.net/

[dosbox-disable-dynamic-core.patch (text/x-diff, attachment)]

[signature.asc (application/pgp-signature, inline)]

Message #25 received at 857341@bugs.debian.org (full text, mbox, reply):

From: simon.belmont@riseup.net

To: 857341@bugs.debian.org

Subject: Re: dosbox: crashes with core=dynamic: DRC64:Unhandled memory reference

Date: Mon, 28 Aug 2017 00:15:01 +0000

Hi,

happened also here.
Unfortunately, Dosbox is almost unusable without core=dynamic.

Debian Stretch
Kernel 4.9.0-3-amd64
Intel(R) Core(TM)2 Duo CPU T7500  @ 2.20GHz

Thanks
Simon

Message #30 received at 857341@bugs.debian.org (full text, mbox, reply):

From: <snfk@seznam.cz>

To: <857341@bugs.debian.org>

Subject: Re: dosbox: crashes with core=dynamic: DRC64:Unhandled memory reference

Date: Sun, 17 Sep 2017 11:02:02 +0200 (CEST)

Hello. This also appears in unstable.
Downgrading dosbox to jessie's version 0.74-4 resolves the issue.
Linux version 4.9.0-3-amd64
AMD Phenom(tm) II X4 965 Processor

Message #35 received at 857341@bugs.debian.org (full text, mbox, reply):

From: Alberto Garcia <berto@igalia.com>

To: 857341@bugs.debian.org

Subject: Re: Bug#857341: dosbox: crashes with core=dynamic: DRC64:Unhandled memory reference

Date: Mon, 25 Sep 2017 10:26:05 +0300

[Message part 1 (text/plain, inline)]

Control: tags 857341 patch upstream fixed-upstream

Hi,

I had a bit of time to take a look at this. Altough people are
reporting that the dosbox package in jessie (0.74-4) doesn't have
this problem, what happens is not that later versions introduced a
regression, but it rather seems that the bug was already there but was
triggered by a gcc update.

This can be seen easily if you build the jessie package with a recent
gcc version: it still crashes. I think you would need to use gcc 4 to
make it work again.

Anyway, this has been fixed upstream a while ago already so we should
simply backport the solution. It's a problem in the 64bit dynamic
recompiler and the fix is in r3951:

   https://sourceforge.net/p/dosbox/code-0/3951/

However in order to apply that patch to the current Debian package you
also need to cherry pick r3674 and r3894.

Considering that those are all the changes to that recompiler up to
that point, and that after that there was only one more bug fix made
one year ago (r3990), I think it makes sense to include all those four
changes in the Debian package.

I have just tested it and everything seems to work fine again. I'm
attaching the debdiff so it can be uploaded to Debian.

Regards,

Berto

[dosbox_0.74-4.2_0.74-4.3.debdiff (text/plain, attachment)]

Message #46 received at 857341@bugs.debian.org (full text, mbox, reply):

From: Alberto Garcia <berto@igalia.com>

To: 857341@bugs.debian.org

Cc: Sven Arvidsson <sa@whiz.se>, Steve <fawtytoo@gmail.com>

Subject: Re: Bug#857341: dosbox: crashes with core=dynamic: DRC64:Unhandled memory reference

Date: Mon, 25 Sep 2017 11:14:17 +0300

On Mon, Sep 25, 2017 at 10:26:05AM +0300, Alberto Garcia wrote:
> Anyway, this has been fixed upstream a while ago already so we should
> simply backport the solution. It's a problem in the 64bit dynamic
> recompiler and the fix is in r3951:
> 
>    https://sourceforge.net/p/dosbox/code-0/3951/
> 
> However in order to apply that patch to the current Debian package you
> also need to cherry pick r3674 and r3894.

Since the patch that I just uploaded includes r3674, it should also
fix bug #799586, which has been by the way open for two years with a
patch available.

I can handle the NMU if the maintainer (Jan Dittberner) is busy /
unavailable. Jan, are you reading this?

Berto

Message #51 received at 857341@bugs.debian.org (full text, mbox, reply):

From: Alberto Garcia <berto@igalia.com>

To: Jan Dittberner <jandd@debian.org>

Cc: 857341@bugs.debian.org, Sven Arvidsson <sa@whiz.se>, Steve <fawtytoo@gmail.com>

Subject: Re: Bug#857341: dosbox: crashes with core=dynamic: DRC64:Unhandled memory reference

Date: Mon, 25 Sep 2017 17:32:30 +0200

On Mon, Sep 25, 2017 at 05:14:21PM +0200, Jan Dittberner wrote:

> > I can handle the NMU if the maintainer (Jan Dittberner) is busy /
> > unavailable. Jan, are you reading this?
> 
> Yes I read this, an NMU is welcome. I would also be happy if there
> would be a new maintainer for dosbox because I use it very rarely
> these days and have not much time to take care of the package.

Hey, thanks for the reply. I don't think I can maintain the package
but I can take care of this NMU. Perhaps you would like to file an RFA
bug in order to look for a new maintainer?

Regards,

Berto

Message #56 received at 857341@bugs.debian.org (full text, mbox, reply):

From: Jan Dittberner <jandd@debian.org>

To: Alberto Garcia <berto@igalia.com>, 857341@bugs.debian.org

Cc: Sven Arvidsson <sa@whiz.se>, Steve <fawtytoo@gmail.com>

Subject: Re: Bug#857341: dosbox: crashes with core=dynamic: DRC64:Unhandled memory reference

Date: Mon, 25 Sep 2017 17:14:21 +0200

On Mon, Sep 25, 2017 at 11:14:17AM +0300, Alberto Garcia wrote:
> On Mon, Sep 25, 2017 at 10:26:05AM +0300, Alberto Garcia wrote:
> > Anyway, this has been fixed upstream a while ago already so we should
> > simply backport the solution. It's a problem in the 64bit dynamic
> > recompiler and the fix is in r3951:
> > 
> >    https://sourceforge.net/p/dosbox/code-0/3951/
> > 
> > However in order to apply that patch to the current Debian package you
> > also need to cherry pick r3674 and r3894.
> 
> Since the patch that I just uploaded includes r3674, it should also
> fix bug #799586, which has been by the way open for two years with a
> patch available.
> 
> I can handle the NMU if the maintainer (Jan Dittberner) is busy /
> unavailable. Jan, are you reading this?

Yes I read this, an NMU is welcome. I would also be happy if there would be
a new maintainer for dosbox because I use it very rarely these days and have
not much time to take care of the package.


Kind regards
Jan

-- 
Jan Dittberner - Debian Developer
GPG-key: 4096R/0xA73E0055558FB8DD 2009-05-10
         B2FF 1D95 CE8F 7A22 DF4C  F09B A73E 0055 558F B8DD
https://portfolio.debian.net/ - https://people.debian.org/~jandd/

Message #61 received at 857341@bugs.debian.org (full text, mbox, reply):

From: Jens Reyer <jre.winesim@gmail.com>

To: Alberto Garcia <berto@igalia.com>, 857341@bugs.debian.org, Jan Dittberner <jandd@debian.org>

Cc: Sven Arvidsson <sa@whiz.se>, Steve <fawtytoo@gmail.com>

Subject: Re: Bug#857341: dosbox: crashes with core=dynamic: DRC64:Unhandled memory reference

Date: Mon, 25 Sep 2017 19:31:11 +0200

On 09/25/2017 05:32 PM, Alberto Garcia wrote:
> On Mon, Sep 25, 2017 at 05:14:21PM +0200, Jan Dittberner wrote:
> 
>>> I can handle the NMU if the maintainer (Jan Dittberner) is busy /
>>> unavailable. Jan, are you reading this?
>>
>> Yes I read this, an NMU is welcome. I would also be happy if there
>> would be a new maintainer for dosbox because I use it very rarely
>> these days and have not much time to take care of the package.
> 
> Hey, thanks for the reply. I don't think I can maintain the package
> but I can take care of this NMU. Perhaps you would like to file an RFA
> bug in order to look for a new maintainer?

Personally I think it would be a good idea to do this within the
pkg-wine team.  Unfortunately we're not doing much teamwork there atm,
but maybe it's still helping e.g. Alberto to reconsider and take
maintainership.  I would at least try to help out then, too.  If anybody
is interested in going that route just subscribe and mail to
pkg-wine-party@lists.alioth.debian.org.

Anyway, thank you all for your work!

Greets
jre (DM and wine co-maitainer)

Message #66 received at 857341@bugs.debian.org (full text, mbox, reply):

From: Alberto Garcia <berto@igalia.com>

To: Jens Reyer <jre.winesim@gmail.com>, 857341@bugs.debian.org

Cc: Jan Dittberner <jandd@debian.org>, Sven Arvidsson <sa@whiz.se>, Steve <fawtytoo@gmail.com>

Subject: Re: Bug#857341: dosbox: crashes with core=dynamic: DRC64:Unhandled memory reference

Date: Tue, 26 Sep 2017 09:44:58 +0200

On Mon, Sep 25, 2017 at 07:31:11PM +0200, Jens Reyer wrote:

> >> Yes I read this, an NMU is welcome. I would also be happy if
> >> there would be a new maintainer for dosbox because I use it very
> >> rarely these days and have not much time to take care of the
> >> package.
> > 
> > Hey, thanks for the reply. I don't think I can maintain the
> > package but I can take care of this NMU. Perhaps you would like to
> > file an RFA bug in order to look for a new maintainer?
> 
> Personally I think it would be a good idea to do this within the
> pkg-wine team.  Unfortunately we're not doing much teamwork there
> atm, but maybe it's still helping e.g. Alberto to reconsider and
> take maintainership.  I would at least try to help out then, too.
> If anybody is interested in going that route just subscribe and mail
> to pkg-wine-party@lists.alioth.debian.org.

The upstream repository is relatively active, but there hasn't been an
official DOSBox release in 7 years and apart for a couple of bugs like
this one this program works just fine, so maintaining it shouldn't
take a lot of time.

However I don't really have much interest to maintain DOSBox at the
moment, but thanks anyway for considering me. I don't even use the
program that much, I was just annoyed by this particular bug and
wanted to fix it once and for all.

Anyway, I just updated the fixed package to DELAYED/5, it should hit
the repositories by the end of the week. I updated the changelog
message slightly, but otherwise the debdiff is the same I uploaded in
comment #35.

Berto

Message #71 received at 857341-close@bugs.debian.org (full text, mbox, reply):

From: Alberto Garcia <berto@igalia.com>

To: 857341-close@bugs.debian.org

Subject: Bug#857341: fixed in dosbox 0.74-4.3

Date: Sat, 30 Sep 2017 21:36:37 +0000

Source: dosbox
Source-Version: 0.74-4.3

We believe that the bug you reported is fixed in the latest version of
dosbox, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 857341@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Alberto Garcia <berto@igalia.com> (supplier of updated dosbox package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Format: 1.8
Date: Mon, 25 Sep 2017 20:42:37 +0300
Source: dosbox
Binary: dosbox
Architecture: source
Version: 0.74-4.3
Distribution: unstable
Urgency: medium
Maintainer: Jan Dittberner <jandd@debian.org>
Changed-By: Alberto Garcia <berto@igalia.com>
Description:
 dosbox     - x86 emulator with Tandy/Herc/CGA/EGA/VGA/SVGA graphics, sound and
Closes: 799586 857341
Changes:
 dosbox (0.74-4.3) unstable; urgency=medium
 .
   * non-maintainer upload.
   * Update 64bit dynamic recompiler to the most recent upstream version.
     This solves a crash with core=dynamic and comes with a couple of other
     fixes (Closes: #857341, #799586).
Checksums-Sha1:
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Message #80 received at 857341@bugs.debian.org (full text, mbox, reply):

From: Wang_Jianlin <school14@kril.kubannet.ru>

To: undisclosed-recipients:;

Subject: Hello Friend

Date: Sun, 01 Oct 2017 07:24:26 -0700

-- 
Ich beabsichtige, Ihnen einen Teil meines Vermögens als eine freiwillige 
finanzielle Spende zu Ihnen zu geben, Antwort, um teilzunehmen, bitte 
kontaktieren Sie meine private E-Mail für weitere Details
Wang Jianlin
Wanda Gruppe

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