widelands crashed with SIGSEGV in Widelands::Soldier::battle_update()

[Guybrush88]

I started doing something else while leaving a game running, and I got this crash.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: widelands 1:18-3build3
ProcVersionSignature: Ubuntu 4.4.0-47.68-generic 4.4.24
Uname: Linux 4.4.0-47-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: GNOME
Date: Fri Nov 25 14:15:43 2016
ExecutablePath: /usr/games/widelands
InstallationDate: Installed on 2016-10-16 (40 days ago)
InstallationMedia: Ubuntu-GNOME 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160720)
ProcCmdline: widelands
ProcEnviron:
 LANGUAGE=it_IT
 PATH=(custom, user)
 XDG_RUNTIME_DIR=<set>
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x6a8e5c <_ZN9Widelands7Soldier13battle_updateERNS_4GameERNS_3Bob5StateE+252>: mov 0x40(%rax),%eax
 PC (0x006a8e5c) ok
 source "0x40(%rax)" (0x00000040) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: widelands
StacktraceTop:
 Widelands::Soldier::battle_update(Widelands::Game&, Widelands::Bob::State&) ()
 Widelands::Bob::act(Widelands::Game&, unsigned int) ()
 Widelands::Cmd_Act::execute(Widelands::Game&) ()
 Widelands::Cmd_Queue::run_queue(int, int&) ()
 Widelands::Game::think() ()
Title: widelands crashed with SIGSEGV in Widelands::Soldier::battle_update()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 Widelands::Soldier::battle_update(Widelands::Game&, Widelands::Bob::State&) ()
 Widelands::Bob::act(Widelands::Game&, unsigned int) ()
 Widelands::Cmd_Act::execute(Widelands::Game&) ()
 Widelands::Cmd_Queue::run_queue(int, int&) ()
 Widelands::Game::think() ()

[Hans Joachim Desserud (hjd)]

Thanks for reporting.

Do you have a replay or perhaps savegame where this crash is triggered? If so, it would be useful if you could upload it so that someone can take a look at it.

I've marked this as also affecting Widelands, since it is unlikely this is specific to the packaging or Ubuntu. I tried to search for various crash bugs, since I know we had some crashes in the battle code which should be fixed in build19, but I didn't find an exact match.

[GunChleoc (gunchleoc)]

Might be a duplicate of the following bug, which we also have trouble reproducing:

https://bugs.launchpad.net/widelands/+bug/1636966

So, if you should have an autosave for this, it would be a great help :)

[Guybrush88 (guybrush)]

these are the replays that might have the crash (I'm not sure about the exact one, since I played also other games that day, sorry about that)

[GunChleoc (gunchleoc)]

Thanks - I'm going through them now. If you still have any autosaves, that would be even better :)

[Guybrush88 (guybrush)]

I don't have the autosaves for such games anymore, I'm sorry about this :(

[GunChleoc (gunchleoc)]

Thanks for checking! Back to square one, then.

[GunChleoc (gunchleoc)]

I'll mark this as a duplicate now, since it's very likely that it's the same bug as mentioned in #7.