.
Thread 4 (process 10626):
#0  0xb8004430 in __kernel_vsyscall ()
#1  0xb7a4ff77 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0xb74b3532 in ?? () from /usr/lib/libpulse.so.0
#3  0xb74a5509 in pa_mainloop_poll () from /usr/lib/libpulse.so.0
#4  0xb74a6cd3 in pa_mainloop_iterate () from /usr/lib/libpulse.so.0
#5  0xb74a6da4 in pa_mainloop_run () from /usr/lib/libpulse.so.0
#6  0xb74b32e3 in ?? () from /usr/lib/libpulse.so.0
#7  0xb74d48e2 in ?? () from /usr/lib/libpulse.so.0
#8  0xb796650f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#9  0xb7a5a7ee in clone () from /lib/tls/i686/cmov/libc.so.6
.
Thread 3 (process 10627):
#0  0xb8004430 in __kernel_vsyscall ()
#1  0xb7a4ff77 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7798bce in ?? () from /usr/lib/libasound.so.2
#3  0xb7798d84 in snd_pcm_wait () from /usr/lib/libasound.so.2
#4  0xb7798f65 in ?? () from /usr/lib/libasound.so.2
#5  0xb77dd605 in ?? () from /usr/lib/libasound.so.2
#6  0xb77937e4 in snd_pcm_writei () from /usr/lib/libasound.so.2
#7  0xb7f03bd6 in ?? () from /usr/lib/libSDL-1.2.so.0
#8  0xb7ed2c75 in ?? () from /usr/lib/libSDL-1.2.so.0
#9  0xb7eda6fb in ?? () from /usr/lib/libSDL-1.2.so.0
#10 0xb7f285cd in ?? () from /usr/lib/libSDL-1.2.so.0
#11 0xb796650f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#12 0xb7a5a7ee in clone () from /lib/tls/i686/cmov/libc.so.6
.
Thread 2 (process 10637):
#0  0xb8004430 in __kernel_vsyscall ()
#1  0xb796a075 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7a689ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7f28ab8 in SDL_CondWait () from /usr/lib/libSDL-1.2.so.0
#4  0x082f1b1c in ?? ()
#5  0x0820ad6a in ?? ()
#6  0xb7eda6fb in ?? () from /usr/lib/libSDL-1.2.so.0
#7  0xb7f285cd in ?? () from /usr/lib/libSDL-1.2.so.0
#8  0xb796650f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#9  0xb7a5a7ee in clone () from /lib/tls/i686/cmov/libc.so.6
.
Thread 1 (process 10624):
#0  0xb79eabb1 in ?? () from /lib/tls/i686/cmov/libc.so.6
#1  0xb79ec865 in malloc () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7ced09b in ?? () from /usr/lib/libfribidi.so.0
Backtrace stopped: previous frame inner to this frame (corrupt stack?)