linux-kernel - [PATCH AUTOSEL 4.14 09/27] ASoC: dapm: fix out-of-bounds accesses to DAPM lookup tables

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Message-Id: <20190311195824.139043-9-sashal@kernel.org>
Date:   Mon, 11 Mar 2019 15:58:06 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.14 09/27] ASoC: dapm: fix out-of-bounds accesses to DAPM lookup tables

From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

[ Upstream commit c16e12010060c6c7a31f08b4a99513064cb53b7d ]

KASAN reports and additional traces point to out-of-bounds accesses to
the dapm_up_seq and dapm_down_seq lookup tables. The indices used are
larger than the array definition.

Fix by adding missing entries for the new widget types in these two
lookup tables, and align them with PGA values.

Also the sequences for the following widgets were not defined. Since
their values defaulted to zero, assign them explicitly

 snd_soc_dapm_input
 snd_soc_dapm_output
 snd_soc_dapm_vmid
 snd_soc_dapm_siggen
 snd_soc_dapm_sink

Fixes: 8a70b4544ef4 ('ASoC: dapm: Add new widget type for constructing DAPM graphs on DSPs.').
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/soc-dapm.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 53c9d7525639..c8cdbe4b5680 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -75,12 +75,16 @@ static int dapm_up_seq[] = {
 	[snd_soc_dapm_clock_supply] = 1,
 	[snd_soc_dapm_supply] = 2,
 	[snd_soc_dapm_micbias] = 3,
+	[snd_soc_dapm_vmid] = 3,
 	[snd_soc_dapm_dai_link] = 2,
 	[snd_soc_dapm_dai_in] = 4,
 	[snd_soc_dapm_dai_out] = 4,
 	[snd_soc_dapm_aif_in] = 4,
 	[snd_soc_dapm_aif_out] = 4,
 	[snd_soc_dapm_mic] = 5,
+	[snd_soc_dapm_siggen] = 5,
+	[snd_soc_dapm_input] = 5,
+	[snd_soc_dapm_output] = 5,
 	[snd_soc_dapm_mux] = 6,
 	[snd_soc_dapm_demux] = 6,
 	[snd_soc_dapm_dac] = 7,
@@ -88,11 +92,19 @@ static int dapm_up_seq[] = {
 	[snd_soc_dapm_mixer] = 8,
 	[snd_soc_dapm_mixer_named_ctl] = 8,
 	[snd_soc_dapm_pga] = 9,
+	[snd_soc_dapm_buffer] = 9,
+	[snd_soc_dapm_scheduler] = 9,
+	[snd_soc_dapm_effect] = 9,
+	[snd_soc_dapm_src] = 9,
+	[snd_soc_dapm_asrc] = 9,
+	[snd_soc_dapm_encoder] = 9,
+	[snd_soc_dapm_decoder] = 9,
 	[snd_soc_dapm_adc] = 10,
 	[snd_soc_dapm_out_drv] = 11,
 	[snd_soc_dapm_hp] = 11,
 	[snd_soc_dapm_spk] = 11,
 	[snd_soc_dapm_line] = 11,
+	[snd_soc_dapm_sink] = 11,
 	[snd_soc_dapm_kcontrol] = 12,
 	[snd_soc_dapm_post] = 13,
 };
@@ -105,13 +117,25 @@ static int dapm_down_seq[] = {
 	[snd_soc_dapm_spk] = 3,
 	[snd_soc_dapm_line] = 3,
 	[snd_soc_dapm_out_drv] = 3,
+	[snd_soc_dapm_sink] = 3,
 	[snd_soc_dapm_pga] = 4,
+	[snd_soc_dapm_buffer] = 4,
+	[snd_soc_dapm_scheduler] = 4,
+	[snd_soc_dapm_effect] = 4,
+	[snd_soc_dapm_src] = 4,
+	[snd_soc_dapm_asrc] = 4,
+	[snd_soc_dapm_encoder] = 4,
+	[snd_soc_dapm_decoder] = 4,
 	[snd_soc_dapm_switch] = 5,
 	[snd_soc_dapm_mixer_named_ctl] = 5,
 	[snd_soc_dapm_mixer] = 5,
 	[snd_soc_dapm_dac] = 6,
 	[snd_soc_dapm_mic] = 7,
+	[snd_soc_dapm_siggen] = 7,
+	[snd_soc_dapm_input] = 7,
+	[snd_soc_dapm_output] = 7,
 	[snd_soc_dapm_micbias] = 8,
+	[snd_soc_dapm_vmid] = 8,
 	[snd_soc_dapm_mux] = 9,
 	[snd_soc_dapm_demux] = 9,
 	[snd_soc_dapm_aif_in] = 10,
-- 
2.19.1