If a process module does not have base config extension then the same
format applies to all of it's inputs and the process->base_config_ext is
NULL, causing NULL dereference when specifically crafted topology and
sequences used.
Fixes: 648fea128476 ("ASoC: SOF: ipc4-topology: set copier output format for process module")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Reviewed-by: Seppo Ingalsuo <seppo.ingalsuo@xxxxxxxxxxxxxxx>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
Hi Mark,
Can you please pick this patch for 6.10 as it can fix a potential NULL
pointer dereference bug.
Thank you,
Peter
sound/soc/sof/ipc4-topology.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/sound/soc/sof/ipc4-topology.c b/sound/soc/sof/ipc4-topology.c
index beff10989324..33e8c5f7d9ca 100644
--- a/sound/soc/sof/ipc4-topology.c
+++ b/sound/soc/sof/ipc4-topology.c
@@ -217,6 +217,14 @@ sof_ipc4_get_input_pin_audio_fmt(struct snd_sof_widget *swidget, int pin_index)
}
process = swidget->private;
+
+ /*
+ * For process modules without base config extension, base module config
+ * format is used for all input pins
+ */
+ if (process->init_config != SOF_IPC4_MODULE_INIT_CONFIG_TYPE_BASE_CFG_WITH_EXT)
+ return &process->base_config.audio_fmt;
+
base_cfg_ext = process->base_config_ext;
/*
--
2.45.1
