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ASoC: SOF: avoid a NULL dereference with unsupported widgets

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If an IPC4 topology contains an unsupported widget, its .module_info
field won't be set, then sof_ipc4_route_setup() will cause a kernel
Oops trying to dereference it. Add a check for such cases.

Cc: stable@vger.kernel.org # 6.2
Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230329113828.28562-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Guennadi Liakhovetski 2023-03-29 14:38:28 +03:00 committed by Mark Brown
parent 44378cd113
commit e3720f92e0
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GPG Key ID: 24D68B725D5487D0
1 changed files with 8 additions and 0 deletions
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8
sound/soc/sof/ipc4-topology.c
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@ -1805,6 +1805,14 @@ static int sof_ipc4_route_setup(struct snd_sof_dev *sdev, struct snd_sof_route *
u32 header, extension;
int ret;
if (!src_fw_module || !sink_fw_module) {
/* The NULL module will print as "(efault)" */
dev_err(sdev->dev, "source %s or sink %s widget weren't set up properly\n",
src_fw_module->man4_module_entry.name,
sink_fw_module->man4_module_entry.name);
return -ENODEV;
}
sroute->src_queue_id = sof_ipc4_get_queue_id(src_widget, sink_widget,
SOF_PIN_TYPE_SOURCE);
if (sroute->src_queue_id < 0) {