Public bug reported:
Binary package hint: lib32asound2
On x86-64 karmic (updated as at 2009-08-15), skype 2.0.0.72-0 crashes
when trying to establish a voice call, or visiting the sound settings.
Running skype directly under GDB, we see a SEGV in
$ gdb --args /usr/bin/skype.real
(gdb) run
<starting a call>
ALSA lib ../../src/conf.c:2700:(snd_config_hooks_call) Cannot open shared
library libasound_module_conf_pulse.so
ALSA lib ../../../src/control/control.c:909:(snd_ctl_open_noupdate) Invalid CTL
hw:0
Program received signal SIGSEGV, Segmentation fault.
0xf7f04a28 in snd_async_del_handler () from /usr/lib32/libasound.so.2
(gdb) where
#0 0xf7f04a28 in snd_async_del_handler () from /usr/lib32/libasound.so.2
#1 0xf7f0efa8 in snd_ctl_close () from /usr/lib32/libasound.so.2
#2 0x088837b7 in ?? ()
#3 0x0888489b in ?? ()
<snip>
which is in:
int snd_async_del_handler(snd_async_handler_t *handler)
{
int err = 0;
assert(handler);
list_del(&handler->glist);
if (list_empty(&snd_async_handlers)) {
struct sigaction act;
memset(&act, 0, sizeof(act));
act.sa_flags = 0;
act.sa_handler = SIG_DFL;
err = sigaction(snd_async_signo, &act, NULL);
if (err < 0) {
SYSERR("sigaction");
return -errno;
}
}
if (handler->type == SND_ASYNC_HANDLER_GENERIC)
goto _end;
if (!list_empty(&handler->hlist))
list_del(&handler->hlist);
if (!list_empty(&handler->hlist))
goto _end;
switch (handler->type) {
#ifdef BUILD_PCM
case SND_ASYNC_HANDLER_PCM:
err = snd_pcm_async(handler->u.pcm, -1, 1);
break;
#endif
case SND_ASYNC_HANDLER_CTL:
err = snd_ctl_async(handler->u.ctl, -1, 1);
break;
default:
assert(0);
}
_end:
free(handler);
return err;
}
** Affects: alsa-lib (Ubuntu)
Importance: Undecided
Status: New
--
SEGV in libasound:snd_async_del_handler()
https://bugs.launchpad.net/bugs/414214
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