ALSA: hda - Fix a memory leak bug

BugLink: https://bugs.launchpad.net/bugs/1841652
commit cfef67f016e4c00a2f423256fc678a6967a9fc09 upstream.

In snd_hda_parse_generic_codec(), 'spec' is allocated through kzalloc().
Then, the pin widgets in 'codec' are parsed. However, if the parsing
process fails, 'spec' is not deallocated, leading to a memory leak.

To fix the above issue, free 'spec' before returning the error.

Fixes: 352f7f914ebb ("ALSA: hda - Merge Realtek parser code to generic parser")
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index 889294d674a8c9aaa8fbb0a5a3765106cdf01cf0..5486043d4016b41eebcddabd491bd2d7a667dd46 100644 (file)
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -5966,7 +5966,7 @@ static int snd_hda_parse_generic_codec(struct hda_codec *codec)
 
        err = snd_hda_parse_pin_defcfg(codec, &spec->autocfg, NULL, 0);
        if (err < 0)
-               return err;
+               goto error;
 
        err = snd_hda_gen_parse_auto_config(codec, &spec->autocfg);
        if (err < 0)