The original patch uses a feature in lib/vsprintf.c to handle the invalid
address when tring to print *_fw_module->man4_module_entry.name when the
*rc_fw_module is NULL.
This case is handled by check_pointer_msg() internally and turns the
invalid pointer to '(efault)' for printing but it is hiding useful
information about the circumstances. Change the print to emmit the name
of the widget and a note on which side's fw_module is missing.
Fixes: e3720f92e023 ("ASoC: SOF: avoid a NULL dereference with unsupported widgets")
Reported-by: Dan Carpenter <error27@xxxxxxxxx>
Link: https://lore.kernel.org/alsa-devel/4826f662-42f0-4a82-ba32-8bf5f8a03256@kili.mountain/
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
---
Hi Mark, Dan,
This patch clarifies the print and will not rely on vsprintf internal protection
on printing the error.
Regards,
Peter
sound/soc/sof/ipc4-topology.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/sound/soc/sof/ipc4-topology.c b/sound/soc/sof/ipc4-topology.c
index 669b99a4f76e..3a5394c3dd83 100644
--- a/sound/soc/sof/ipc4-topology.c
+++ b/sound/soc/sof/ipc4-topology.c
@@ -1806,10 +1806,12 @@ static int sof_ipc4_route_setup(struct snd_sof_dev *sdev, struct snd_sof_route *
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);
+ dev_err(sdev->dev,
+ "cannot bind %s -> %s, no firmware module for: %s%s\n",
+ src_widget->widget->name, sink_widget->widget->name,
+ src_fw_module ? "" : " source",
+ sink_fw_module ? "" : " sink");
+
return -ENODEV;
}
--
2.40.0
