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route: Fix invalid pointer access

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An uninitialized chmap pointer value is assigned in
_snd_pcm_route_open().  Add NULL initializations appropriately, and
also avoid the possible invalid access of NULL pcmp pointer.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2014-03-19 10:52:24 +01:00
parent d794af65e9
commit dbe6d7f869
1 changed files with 3 additions and 2 deletions
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5
src/pcm/pcm_route.c
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@ -1361,7 +1361,7 @@ int _snd_pcm_route_open(snd_pcm_t **pcmp, const char *name,
int err;
snd_pcm_t *spcm;
snd_config_t *slave = NULL, *sconf;
snd_pcm_chmap_t *tt_chmap, *chmap;
snd_pcm_chmap_t *tt_chmap = NULL, *chmap = NULL;
snd_pcm_format_t sformat = SND_PCM_FORMAT_UNKNOWN;
int schannels = -1;
snd_config_t *tt = NULL;
@ -1460,8 +1460,9 @@ int _snd_pcm_route_open(snd_pcm_t **pcmp, const char *name,
if (err < 0) {
free(chmap);
snd_pcm_close(spcm);
}
} else {
((snd_pcm_route_t*) (*pcmp)->private_data)->chmap = chmap;
}
return err;
}