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

Sasha Levin
2019-03-11T20:04:06Z

From: Pierre-Louis Bossart <pierre-louis.bossart@linux.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@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.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