View Full Version : Segfault on Startup (with solution)

03-14-2014, 07:02 PM
Hi -

It's good to see a linux demo! Unfortunately, it was segfaulting for me right away. :(

You may remember that I was having similar problems running the windows version with wine (as documented in the thread "Crash on boot (Linux/Wine)")

The linux demo core dump provided the following backtrace

Program terminated with signal SIGSEGV, Segmentation fault.
#0 0xf75bfb45 in MixDirect_SSE () from /usr/lib32/libopenal.so.1
(gdb) bt
#0 0xf75bfb45 in MixDirect_SSE () from /usr/lib32/libopenal.so.1
#1 0xf75be143 in MixSource () from /usr/lib32/libopenal.so.1
#2 0xf75b53ee in aluMixData () from /usr/lib32/libopenal.so.1
#3 0xf75c50dc in PulseProc () from /usr/lib32/libopenal.so.1
#4 0xf75b9ad0 in StarterFunc () from /usr/lib32/libopenal.so.1
#5 0xf738df33 in start_thread () from /lib32/libpthread.so.0
#6 0xf7495a7e in clone () from /lib32/libc.so.6

A quick search indicates that it's likely unaligned (or improperly aligned) memory.

Rebuilding OpenAL without SSE support allows me to get into the game with sound. I played through a couple systems, up to about level 3, with no further issue.

My relevant system info:
Linux 3.12.13-gentoo #1 SMP Mon Mar 3 22:12:26 PST 2014 x86_64 Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz GenuineIntel GNU/Linux

Hope this helps someone (or points to a legit problem!)

Thanks again for an awesome game. :)