Debian Bug report logs - #847651
doomsday: Segfaults at startup

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

From: eingousef <eingousef@gmail.com>

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

Subject: doomsday: Segfaults at startup

Date: Sat, 10 Dec 2016 11:16:50 +0100

Package: doomsday
Version: 1.15.8-3
Severity: important

Dear Maintainer,

Doomsday just segfaults at startup, producting to following output :

$ doomsday
zsh: segmentation fault  doomsday

And I can't compile the dev version or the official source package. Good luck.

Regards,

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (990, 'testing'), (980, 'stable-updates'), (980, 'stable'), (500, 'oldstable-updates'), (500, 'oldstable'), (90, 'experimental'), (90, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.8.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages doomsday depends on:
ii  doomsday-common           1.15.8-3
ii  doomsday-data             1.15.8-3
ii  libc6                     2.24-7
ii  libgcc1                   1:6.2.1-5
ii  libgl1-mesa-glx [libgl1]  13.0.2-1
ii  libqt4-network            4:4.8.7+dfsg-11
ii  libqt4-opengl             4:4.8.7+dfsg-11
ii  libqtcore4                4:4.8.7+dfsg-11
ii  libqtgui4                 4:4.8.7+dfsg-11
ii  libsdl2-2.0-0             2.0.5+dfsg1-1
ii  libsdl2-mixer-2.0-0       2.0.1+dfsg1-1
ii  libstdc++6                6.2.1-5

Versions of packages doomsday recommends:
ii  fluid-soundfont-gm  3.1-5.1

doomsday suggests no packages.

-- no debconf information

Message #10 received at 847651@bugs.debian.org (full text, mbox, reply):

From: James Cowgill <jcowgill@debian.org>

To: eingousef <eingousef@gmail.com>, 847651@bugs.debian.org

Subject: Re: Bug#847651: doomsday: Segfaults at startup

Date: Sun, 11 Dec 2016 14:13:46 +0000

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

Control: severity -1 grave

On 10/12/16 10:16, eingousef wrote:
> Package: doomsday
> Version: 1.15.8-3
> Severity: important
> 
> Dear Maintainer,
> 
> Doomsday just segfaults at startup, producting to following output :
> 
> $ doomsday
> zsh: segmentation fault  doomsday

I can confirm this. Doomsday is fairly useless at the moment.

> And I can't compile the dev version or the official source package. Good luck.

That's probably an issue to report upstream instead of to Debian.

Thanks,
James

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Message #17 received at 847651@bugs.debian.org (full text, mbox, reply):

From: Markus Koschany <apo@debian.org>

To: 847651@bugs.debian.org

Subject: Re: Bug#847651: doomsday: Segfaults at startup

Date: Thu, 15 Dec 2016 23:16:50 +0100

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

On Sun, 11 Dec 2016 14:13:46 +0000 James Cowgill <jcowgill@debian.org>
wrote:
> Control: severity -1 grave
> 
> On 10/12/16 10:16, eingousef wrote:
> > Package: doomsday
> > Version: 1.15.8-3
> > Severity: important
> > 
> > Dear Maintainer,
> > 
> > Doomsday just segfaults at startup, producting to following output :
> > 
> > $ doomsday
> > zsh: segmentation fault  doomsday
> 
> I can confirm this. Doomsday is fairly useless at the moment.

That's true. I had a go at this but I can't figure out what is going
wrong here. A rebuild doesn't resolve the issue.

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Message #22 received at 847651@bugs.debian.org (full text, mbox, reply):

From: Bernhard Übelacker <bernhardu@mailbox.org>

To: 847651@bugs.debian.org, Markus Koschany <apo@debian.org>, James Cowgill <jcowgill@debian.org>, eingousef <eingousef@gmail.com>

Subject: Re: Bug#847651: doomsday: Segfaults at startup

Date: Tue, 23 May 2017 13:00:05 +0200

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

Hello,
tried to reproduce the issue.

I think the problem is that in de::File::parent the method maybeAs()
is called on a NULL pointer.

With the attached patch the crash does not happen.

Kind regards,
Bernhard



# apt install doomsday doomsday-dbgsym doomsday-common-dbgsym
$ gdb -q --args doomsday
Reading symbols from doomsday...Reading symbols from /usr/lib/debug/.build-id/41/6978915c5c4686da064c7ff3a539ef4336958c.debug...done.
done.
(gdb) run
Starting program: /usr/games/doomsday 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
                                                                                                                                                                                  
Program received signal SIGSEGV, Segmentation fault.                                                                                                                              
0x00007ffff476092d in __dynamic_cast () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6                                                                                             
(gdb) bt                                                                                                                                                                          
#0  0x00007ffff476092d in __dynamic_cast () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6                                                                                           
#1  0x00007ffff7574d95 in de::filesys::Node::maybeAs<de::Folder>() (this=<optimized out>) at include/de/filesys/../filesys/node.h:88                                              
#2  0x00007ffff7574d95 in de::File::parent() const (this=<optimized out>) at src/filesys/file.cpp:114                                                                             
#3  0x00007ffff757572b in de::File::description() const (this=this@entry=0x5555560e5850) at src/filesys/file.cpp:146
#4  0x00007ffff757a40e in de::FileSystem::interpret(de::File*) (this=<optimized out>, sourceData=sourceData@entry=0x5555560e5850) at src/filesys/filesystem.cpp:147
#5  0x00007ffff7573415 in de::DirectoryFeed::populateFile(de::Folder&, de::String const&) (this=this@entry=0x55555605e410, folder=..., entryName=...) at src/filesys/directoryfeed.cpp:120
#6  0x00007ffff7573849 in de::DirectoryFeed::populate(de::Folder&) (this=0x55555605e410, folder=...) at src/filesys/directoryfeed.cpp:77
#7  0x00007ffff757f011 in de::Folder::populate(de::Folder::PopulationBehavior) (this=0x5555560dcc80, behavior=de::Folder::PopulateFullTree) at src/filesys/folder.cpp:193
#8  0x00007ffff757f069 in de::Folder::populate(de::Folder::PopulationBehavior) (this=0x555556145070, behavior=behavior@entry=de::Folder::PopulateFullTree) at src/filesys/folder.cpp:203
#9  0x00007ffff757c24d in de::FileSystem::refresh() (this=this@entry=0x5555560b2a50) at src/filesys/filesystem.cpp:66
#10 0x00007ffff75e9be9 in de::App::Instance::initFileSystem(bool) (this=0x5555560b2910, allowPlugins=<optimized out>) at src/core/app.cpp:242
#11 0x00007ffff75e5faa in de::App::initSubsystems(QFlags<de::App::SubsystemInitFlag>) (this=this@entry=0x7fffffffdd80, flags=...) at src/core/app.cpp:592
#12 0x00007ffff6a43115 in de::BaseGuiApp::initSubsystems(QFlags<de::App::SubsystemInitFlag>) (this=0x7fffffffdd70, flags=...) at src/baseguiapp.cpp:106
#13 0x00005555555e48a5 in ClientApp::initialize() (this=0x7fffffffdd70) at src/clientapp.cpp:350
#14 0x00005555555c8605 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at src/main_client.cpp:75

[0001-Avoid-crash-after-parent-returning-NULL-pointer.patch (text/x-patch, attachment)]

Message #27 received at 847651@bugs.debian.org (full text, mbox, reply):

From: Markus Koschany <apo@debian.org>

To: Bernhard Übelacker <bernhardu@mailbox.org>

Cc: 847651@bugs.debian.org

Subject: Re: Bug#847651: doomsday: Segfaults at startup

Date: Tue, 23 May 2017 16:24:51 +0200

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

Control: tags -1 pending

Am 23.05.2017 um 13:00 schrieb Bernhard Übelacker:
> Hello,
> tried to reproduce the issue.
> 
> I think the problem is that in de::File::parent the method maybeAs()
> is called on a NULL pointer.
> 
> With the attached patch the crash does not happen.

Hello,

thank you for the patch! It seems to do the trick. I have just uploaded
a new revision of doomsday to unstable.

Regards,

Markus

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Message #34 received at 847651-close@bugs.debian.org (full text, mbox, reply):

From: Markus Koschany <apo@debian.org>

To: 847651-close@bugs.debian.org

Subject: Bug#847651: fixed in doomsday 1.15.8-4

Date: Tue, 23 May 2017 15:18:46 +0000

Source: doomsday
Source-Version: 1.15.8-4

We believe that the bug you reported is fixed in the latest version of
doomsday, 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 847651@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Markus Koschany <apo@debian.org> (supplier of updated doomsday 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: SHA512

Format: 1.8
Date: Tue, 23 May 2017 15:08:36 +0200
Source: doomsday
Binary: doomsday doomsday-server doomsday-common doomsday-data
Architecture: source
Version: 1.15.8-4
Distribution: unstable
Urgency: medium
Maintainer: Debian Games Team <pkg-games-devel@lists.alioth.debian.org>
Changed-By: Markus Koschany <apo@debian.org>
Description:
 doomsday   - enhanced version of the legendary DOOM game
 doomsday-common - enhanced version of the legendary DOOM game - common files
 doomsday-data - enhanced version of the legendary DOOM game - data files
 doomsday-server - enhanced version of the legendary DOOM game - server
Closes: 847651
Changes:
 doomsday (1.15.8-4) unstable; urgency=medium
 .
   * Team upload.
   * Add Node-parent-NULL-pointer.patch and fix startup crash.
     Thanks to Bernhard Übelacker for the patch. (Closes: #847651)
Checksums-Sha1:
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 e605b305d35cab9d6e7a2dac91f8d6cd2a246be5 16304 doomsday_1.15.8-4.debian.tar.xz
 8ffc2dddcf99b81f824d161db77454cfea08d149 13710 doomsday_1.15.8-4_amd64.buildinfo
Checksums-Sha256:
 74a3b0beebacf6775e0012eb9d4d07fd21fe1a41098650e0b70a828e08367834 3050 doomsday_1.15.8-4.dsc
 6e5becbe07d73c549042dff9e8b5305a188eaf26ee3e483d4bda03cb75e28777 16304 doomsday_1.15.8-4.debian.tar.xz
 db8362d0e49a9f3ebdc231130a1a7faa0c6963f68fb4484574f20e09e613f537 13710 doomsday_1.15.8-4_amd64.buildinfo
Files:
 5364e5687615e69bd4e89597f642c3a0 3050 games optional doomsday_1.15.8-4.dsc
 c10496e8562a57978acda5c2ee0d10b0 16304 games optional doomsday_1.15.8-4.debian.tar.xz
 8b7b300e3944336f1139c3e8bf95d826 13710 games optional doomsday_1.15.8-4_amd64.buildinfo

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