0xb7fe2422 in __kernel_vsyscall ()
(gdb) bt
#0  0xb7fe2422 in __kernel_vsyscall ()
#1  0xb75ebb76 in nanosleep () from /lib/tls/i686/cmov/libc.so.6
#2  0xb75eb991 in __sleep (seconds=0) at ../sysdeps/unix/sysv/linux/sleep.c:138
#3  0x0847bbce in udbg_launch_debugger () at ../../../source/lib/sysdep/os/unix/udbg.cpp:74
#4  0x0847c89a in sys_display_error (
    text=0xa0770000 L"Assertion failed: \"0\"\r\nLocation: snd_mgr.cpp:499 (srcs_remove)\r\n\r\nCall stack:\r\n\r\n(0x847b233) ./pyrogenesis_dbg [0x847b233]\n(0x84406bc) ./pyrogenesis_dbg [0x84406bc]\n(0x8440a2a) ./pyrogenesis_dbg [0x84"..., flags=6) at ../../../source/lib/sysdep/os/unix/unix.cpp:77
#5  0x084408eb in CallDisplayError (
    text=0xa0770000 L"Assertion failed: \"0\"\r\nLocation: snd_mgr.cpp:499 (srcs_remove)\r\n\r\nCall stack:\r\n\r\n(0x847b233) ./pyrogenesis_dbg [0x847b233]\n(0x84406bc) ./pyrogenesis_dbg [0x84406bc]\n(0x8440a2a) ./pyrogenesis_dbg [0x84"..., flags=6) at ../../../source/lib/debug.cpp:410
#6  0x08440a4a in debug_DisplayError (description=0xaa12a58 L"Assertion failed: \"0\"", flags=6, context=0x0, lastFuncToSkip=0xa43583c L"debug_OnAssertionFailure", 
    pathname=0x84fadc4 L"../../../source/lib/res/sound/snd_mgr.cpp", line=499, func=0x84fc099 "srcs_remove", suppress=0x863e71b "") at ../../../source/lib/debug.cpp:485
#7  0x08440d4e in debug_OnAssertionFailure (expr=0x84faf60 L"0", suppress=0x863e71b "", file=0x84fadc4 L"../../../source/lib/res/sound/snd_mgr.cpp", line=499, func=0x84fc099 "srcs_remove")
    at ../../../source/lib/debug.cpp:570
#8  0x08467176 in srcs_remove (srcs=0x863e4a0, al_src=146487824) at ../../../source/lib/res/sound/snd_mgr.cpp:499
#9  0x084674fb in al_src_free (al_src=146487824) at ../../../source/lib/res/sound/snd_mgr.cpp:596
#10 0x084690e1 in vsrc_reclaim (vs=0xc101570) at ../../../source/lib/res/sound/snd_mgr.cpp:1715
#11 0x08468170 in VSrc_dtor (vs=0xc101570) at ../../../source/lib/res/sound/snd_mgr.cpp:1252
#12 0x0845e4bd in h_free_idx (idx=415, hd=0xc101558) at ../../../source/lib/res/h_mgr.cpp:613
#13 0x0845e6e1 in h_free (h=@0xc101570, type=0x8624c2c) at ../../../source/lib/res/h_mgr.cpp:660
#14 0x08468732 in snd_free (hvs=@0xc101570) at ../../../source/lib/res/sound/snd_mgr.cpp:1368
#15 0x08469927 in reclaim (vs=0xc101570) at ../../../source/lib/res/sound/snd_mgr.cpp:1995
#16 0x08468826 in list_foreach (cb=0x8469900 <reclaim>, skip=64, end_idx=0) at ../../../source/lib/res/sound/snd_mgr.cpp:1414
#17 0x084699aa in vm_update () at ../../../source/lib/res/sound/snd_mgr.cpp:2025
#18 0x08469a0b in snd_update (pos=0x8f75080, dir=0x8f75070, up=0xbffff39c) at ../../../source/lib/res/sound/snd_mgr.cpp:2057
#19 0x081feb9f in Frame () at ../../../source/main.cpp:344
#20 0x081ff464 in RunGameOrAtlas (argc=1, argv=0xbffff584) at ../../../source/main.cpp:485
#21 0x081ff50c in main (argc=1, argv=0xbffff584) at ../../../source/main.cpp:504