From: Wenwen Wang <wenwen@cs.uga.edu>
Date: Sat, 10 Aug 2019 04:29:48 +0000 (-0500)
Subject: ALSA: hda - Fix a memory leak bug
X-Git-Tag: v4.4.190~42
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ba8eaaf5cf0e7fcd60f3fc8ab58eb8b43e5b67c9;p=thirdparty%2Fkernel%2Fstable.git

ALSA: hda - Fix a memory leak bug

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>
---

diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index 689df78f640a4..142549bbeb53b 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -5917,7 +5917,7 @@ 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)