Am Mittwoch, 23. September 2015, 16:26:58 schrieb Takashi Iwai:
On Sat, 12 Sep 2015 22:10:40 +0200,
Andreas Hartmann wrote:
Hi,
Using the surround_encoder of the swh-plugins I noticed, that the alsa implementation only assumes an equal number of in- and output channels for ladspa plugins. This occurs from Line 752 onwards in pcm_ladspa.c and leads to a Segfault shortly after. There needs to be a check and correct handling for up/downmix scenarios.
Could you give the back trace? Or at best submit a fix patch?
thanks,
Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
Sure here you go
#0 0x00007ffff78623ef in snd_pcm_ladspa_allocate_memory (pcm=0x626fa0, pcm=0x626fa0, pcm=0x626fa0, ladspa=0x621ad0) at pcm_ladspa.c:753 #1 snd_pcm_ladspa_init (pcm=0x626fa0) at pcm_ladspa.c:834 #2 0x00007ffff7842946 in snd_pcm_plugin_prepare (pcm=0x626fa0) at pcm_plugin.c:171 #3 0x00007ffff784290f in snd_pcm_plugin_prepare (pcm=0x62c760) at pcm_plugin.c:162 #4 0x000000000040256a in ?? () #5 0x00007ffff7222ec5 in __libc_start_main (main=0x401d80, argc=4, argv=0x7fffffffde28, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffde18) at libc-start.c:287 #6 0x0000000000402fdd in ?? ()