vm.game.type 0 leads to "IPC: Socket closed by remote end" on regular installation

[Viech]

In a "regular" user environment (see file listing below) running current master of c5bb4b5, the new default value for vm.game.type (set from TYPE_NATIVE_EXE to TYPE_NACL in 2433590, closing #403) causes local map load to fail with the (nondescript) message IPC: Socket closed by remote end.

The Unvanquished installation in question provides the following files:

/etc/
/etc/conf.d/
/etc/conf.d/unvanquished.conf
/etc/unvanquished/
/etc/unvanquished/maprotation.cfg
/etc/unvanquished/server.cfg
/usr/
/usr/
/usr/bin/
/usr/bin/unvanquished
/usr/bin/unvanquished-tty
/usr/lib/
/usr/lib/systemd/
/usr/lib/systemd/system/
/usr/lib/systemd/system/unvanquished.service
/usr/lib/unvanquished/
/usr/lib/unvanquished/cgame-qvm-native.so
/usr/lib/unvanquished/daemon
/usr/lib/unvanquished/daemonded
/usr/lib/unvanquished/daemon-tty
/usr/lib/unvanquished/game-nacl-native-exe
/usr/lib/unvanquished/irt_core-x86_64.nexe
/usr/lib/unvanquished/nacl_helper_bootstrap
/usr/lib/unvanquished/sel_ldr
/usr/share/
/usr/share/
/usr/share/applications/
/usr/share/applications/unvanquished.desktop
/usr/share/icons/
/usr/share/icons/hicolor/
/usr/share/icons/hicolor/128x128/
/usr/share/icons/hicolor/128x128/apps/
/usr/share/icons/hicolor/128x128/apps/unvanquished.png
/usr/share/licenses/
/usr/share/licenses/unvanquished/
/usr/share/licenses/unvanquished/COPYING.txt
/usr/share/unvanquished/
/usr/share/unvanquished/
/usr/share/unvanquished/pkg/
/usr/share/unvanquished/pkg/
/usr/share/unvanquished/pkg/map-antares_a03+1.pk3
/usr/share/unvanquished/pkg/map-chasm_b1+2.pk3
/usr/share/unvanquished/pkg/map-forlorn_a9+1.pk3
/usr/share/unvanquished/pkg/map-parpax_d03a+1.pk3
/usr/share/unvanquished/pkg/map-perseus_b5a+1.pk3
/usr/share/unvanquished/pkg/map-plat23_b13+1.pk3
/usr/share/unvanquished/pkg/map-spacetracks_1.0+1.pk3
/usr/share/unvanquished/pkg/map-station15_1.0.pk3
/usr/share/unvanquished/pkg/map-thunder_b3+2.pk3
/usr/share/unvanquished/pkg/map-yocto_b2c+1.pk3
/usr/share/unvanquished/pkg/md5sums0.34
/usr/share/unvanquished/pkg/tex-all_1.0.pk3
/usr/share/unvanquished/pkg/tex-common_2.0.pk3
/usr/share/unvanquished/pkg/tex-ex_1.0.pk3
/usr/share/unvanquished/pkg/tex-exm_1.0.pk3
/usr/share/unvanquished/pkg/tex-pk01_1.0.pk3
/usr/share/unvanquished/pkg/tex-pk02_1.0.pk3
/usr/share/unvanquished/pkg/tex-space_1.0.pk3
/usr/share/unvanquished/pkg/tex-tech_1.0.pk3
/usr/share/unvanquished/pkg/tex-trak5_1.0.pk3
/usr/share/unvanquished/pkg/unvanquished_0.25.0.pk3
/usr/share/unvanquished/pkg/unvanquished_0.26.0.pk3
/usr/share/unvanquished/pkg/unvanquished_0.27.0.pk3
/usr/share/unvanquished/pkg/unvanquished_0.28.0.pk3
/usr/share/unvanquished/pkg/unvanquished_0.29.0.pk3
/usr/share/unvanquished/pkg/unvanquished_0.30.0.pk3
/usr/share/unvanquished/pkg/unvanquished_0.31.0.pk3
/usr/share/unvanquished/pkg/unvanquished_0.32.0.pk3
/usr/share/unvanquished/pkg/unvanquished_0.33.0.pk3
/usr/share/unvanquished/pkg/unvanquished_0.34.0.pk3
/var/
/var/lib/
/var/lib/unvanquished-server/
/var/lib/unvanquished-server/config/
/var/lib/unvanquished-server/config/server.cfg
/var/lib/unvanquished-server/game/
/var/lib/unvanquished-server/game/maprotation.cfg

[Viech]

On request by @Amanieu, I ran unvanquished with +nocurses +set vm.game.debugLoader 1 +devmap plat23, producing the following snippet:

Loading pak '/usr/share/unvanquished/pkg/tex-pk02_1.0.pk3'... 
Loading pak '/usr/share/unvanquished/pkg/tex-space_1.0.pk3'... 
Loading VM module game-x86_64.nexe... 
Using loader args:  /usr/lib/unvanquished/nacl_helper_bootstrap /usr/lib/unvanquished/sel_ldr --r_debug=0xXXXXXXXXXXXXXXXX --reserved_at_zero=0xXXXXXXXXXXXXXXXX -v -B /usr/lib/unvanquished/irt_core-x86_64.nexe -e -i 100:32 -- /home/eris/.unvanquished/game-x86_64.nexe 100 
Loading pak '/usr/share/unvanquished/pkg/unvanquished_0.34.0.pk3'... 
Loading pak '/usr/share/unvanquished/pkg/unvanquished_0.33.0.pk3'... 

Also:

% cat ~/.unvanquished/game.sel_ldr.log
sel_ldr argument list:
/usr/lib/unvanquished/sel_ldr --r_debug=0x0000000000213000 --reserved_at_zero=0x0000000000000000 -v -B /usr/lib/unvanquished/irt_core-x86_64.nexe -e -i 100:32 -- /home/eris/.unvanquished/game-x86_64.nexe 100
[4080,917354304:15:33:36.110026] NaClPerfCounterInterval(SelMain __start__:SnapshotBlob): 344 microsecs
[4080,917354304:15:33:36.110084] NaClPerfCounterInterval(NaClAppLoadFile __start__:PreAllocAddrSpace): 14 microsecs
[4080,917354304:15:33:36.110156] Native Client module will be loaded at base address 0x000065f800000000
[4080,917354304:15:33:36.110163] NaClPerfCounterInterval(NaClAppLoadFile PreAllocAddrSpace:*AllocAddrSpace): 79 microsecs
[4080,917354304:15:33:36.110973] NaClPerfCounterInterval(NaClAppLoadFile *AllocAddrSpace:*MakeDynText): 808 microsecs
[4080,917354304:15:33:36.130432] NaClPerfCounterInterval(NaClAppLoadFile *MakeDynText:*ValidateImg): 19460 microsecs
[4080,917354304:15:33:36.130560] NaClPerfCounterInterval(NaClAppLoadFile __start__:EndLoadFile): 20489 microsecs
[4080,917354304:15:33:36.130569] NaClPerfCounterInterval(SelMain SnapshotBlob:AppLoadEnd): 20543 microsecs
[4080,917354304:15:33:36.133057] NaClPerfCounterInterval(NaClTextDyncodeCreate __start__:*DynRegionValidate): 2393 microsecs
[4080,917354304:15:33:36.133292] NaClPerfCounterInterval(SelMain AppLoadEnd:BlobLoaded): 2724 microsecs
[4080,917354304:15:33:36.133317] NACL: Application output follows
[4080,917354304:15:33:36.133746] NaClPerfCounterInterval(SelMain BlobLoaded:CreateMainThread): 453 microsecs

** Signal 11 from untrusted code: pc=65f80ffd4baa

[Amanieu]

I can't reproduce this error. Starting a server works fine for me.

[Viech]

@Amanieu found out that Arch Linux' makepkg tool stripped binaries when packaging Unvanquished, which broke one related to NaCl (irt_core-x86_64.nexe). I'll upload new PKGBUILDs that disable stripping to the AUR soon.