Summary: After booting, there was no error message in dmesg. Then I tried to playb

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fixed by the PR <a class="issue-link js-issue-link" data-error-text="Failed to load ti

Playback/Capture can't work on UP^2 about linux HOT 4 CLOSED

thesofproject commented on July 17, 2024

Playback/Capture can't work on UP^2

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Comments (4)

commented on July 17, 2024

@lgirdwood
I added test code like this below in the function sof_route_load()

	sroute->route.source = kstrdup(route->source, GFP_KERNEL);
	if (!sroute->route.source) {
		dev_err(sdev->dev, "==wzg: route soure malloc fail %s\n",sroute->route.source);
		goto err;
	}

	sroute->route.sink = kstrdup(route->sink, GFP_KERNEL);
	if (!sroute->route.sink) {
		dev_err(sdev->dev, "==wzg: route sink malloc fail %s\n",sroute->route.source);
		kfree(sroute->route.source);
		goto err;
	}

	sroute->route.control = kstrdup(route->control, GFP_KERNEL);
	if (!sroute->route.control) {
		dev_err(sdev->dev, "==wzg: route control malloc fail %s\n",sroute->route.source);
		kfree(sroute->route.source);
		kfree(sroute->route.sink);
		goto err;
	}

I got the log: "route control malloc fail .....".
It is strange. I do not know why this would happen.
It seems it failed many times.

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commented on July 17, 2024

@lgirdwood
I found the root cause of this PR #80
I will send another fix for this issue.

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commented on July 17, 2024

@lgirdwood
The root cause is: the upper function will sometimes set the route->control pointer = NULL.
then in the sof_route_load() function, it will malloc failure. the error will happen. the route is not added
into the list. the IPC error will happen.

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commented on July 17, 2024

fixed by the PR #99

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