topic Re: "optee_example_hello_world” running causes kernel panic with i.MX8M mini in i.MX Processors

"optee_example_hello_world” running causes kernel panic with i.MX8M mini

tanoue — Tue, 19 Oct 2021 10:32:16 GMT

Hi, alls.

When I run optee_example_hello_world, it causes kernel panic with i.MX8M mini EVK.

It was build and run optee_examples/hello world without editing codes.

Referenced the following URL, I tried running xtest.
It was succeeded.

https://community.nxp.com/t5/i-MX-Processors/OPTEE-OS-xtes-and-optee-example-hello-world-all-crashed-after/m-p/963283

These log is attached.

Why kernel panic be caused?

What can I do anything to solve it?

Regards,

tanoue

Re: "optee_example_hello_world” running causes kernel panic with i.MX8M mini

torus1000 — Mon, 25 Oct 2021 01:48:31 GMT

I saw same symptom. I would appreciate any guidance/advice.I'm also waiting for someone's reply. Thanks.

Re: "optee_example_hello_world” running causes kernel panic with i.MX8M mini

Zhiming_Liu — Thu, 28 Oct 2021 06:46:34 GMT

Can you attach your steps?

Re: "optee_example_hello_world” running causes kernel panic with i.MX8M mini

tanoue — Thu, 28 Oct 2021 15:15:13 GMT

Hi, nxf65025.

Thank you for replying.

I attached the text file written my steps here.

Please give me some advice

Best regards.

Re: "optee_example_hello_world” running causes kernel panic with i.MX8M mini

tanoue — Wed, 03 Nov 2021 05:48:43 GMT

Hi, nxf65025.

Did you see my steps?

Please reply and give me any actions to solve it.

Best Regards.

Re: "optee_example_hello_world” running causes kernel panic with i.MX8M mini

Zhiming_Liu — Fri, 05 Nov 2021 00:41:17 GMT

@tanoue @torus1000

Sorry for late reply, in past days, i ported the optee_examples in yocto. I think your steps have issues.

1.There is no need to build optee_os, optee-client,optee_test after you add IMAGE_INSTALL += "optee-test optee-os optee-client" to local.conf

2.You can't use arm toolchain to compile optee_examples .

I ported the optee_examples to our yocto env and there is no error after run optee_example_hello_world

I have attacched the optee-examples_3.11.0-r0_arm64.deb(compiled under L5.10.52),which you can install it to your board.I will attach yocto bb file later.

My test log:

root@imx8mpevk:~# xtest --install-ta /lib/optee_armtz/ 8aaaf200-2450-11e4-abe2-0002a5d5c51b.ta Searching directory "/lib/optee_armtz/" for TAs Installing "fd02c9da-306c-48c7-a49c-bbd827ae86ee.ta" Installing "e626662e-c0e2-485c-b8c8-09fbce6edf3d.ta" Installing "484d4143-2d53-4841-3120-4a6f636b6542.ta" Installing "731e279e-aafb-4575-a771-38caa6f0cca6.ta" Installing "e13010e0-2ae1-11e5-896a-0002a5d5c51b.ta" Installing "5b9e0e40-2636-11e1-ad9e-0002a5d5c51b.ta" Installing "b3091a65-9751-4784-abf7-0298a7cc35ba.ta" Installing "c3f6e2c0-3548-11e1-b86c-0800200c9a66.ta" Installing "a734eed9-d6a1-4244-aa50-7c99719e7b7b.ta" Installing "a4c04d50-f180-11e8-8eb2-f2801f1b9fd1.ta" Installing "873bcd08-c2c3-11e6-a937-d0bf9c45c61c.ta" Installing "528938ce-fc59-11e8-8eb2-f2801f1b9fd1.ta" Installing "f04a0fe7-1f5d-4b9b-abf7-619b85b4ce8c.ta" Installing "cb3e5ba0-adf1-11e0-998b-0002a5d5c51b.ta" Installing "380231ac-fb99-47ad-a689-9e017eb6e78a.ta" Installing "e6a33ed4-562b-463a-bb7e-ff5e15a493c8.ta" Installing "b6c53aba-9669-4668-a7f2-205629d00f86.ta" Installing "d17f73a0-36ef-11e1-984a-0002a5d5c51b.ta" Installing "5dbac793-f574-4871-8ad3-04331ec17f24.ta" Installing "023f8f1a-292a-432b-8fc4-de8471358067.ta" Installing "8aaaf200-2450-11e4-abe2-0002a5d5c51b.ta" Installing "690d2100-dbe5-11e6-bf26-cec0c932ce01.ta" Installing "f157cda0-550c-11e5-a6fa-0002a5d5c51b.ta" Installing "f4e750bb-1437-4fbf-8785-8d3580c34994.ta" Installing "5ce0c432-0ab0-40e5-a056-782ca0e6aba2.ta" Installing "614789f2-39c0-4ebf-b235-92b32ac107ed.ta" Installing "ffd2bded-ab7d-4988-95ee-e4962fff7154.ta" Installing "b689f2a7-8adf-477a-9f99-32e90c0ad0a2.ta" Skipping "8aaaf200-2450-11e4-abe2-0002a5d5c51b.ta": No such file or directoryInstalling TAs done root@imx8mpevk:~# optee_example_hello_world Invoking TA to increment 42 TA incremented value to 43

Re: "optee_example_hello_world” running causes kernel panic with i.MX8M mini

Zhiming_Liu — Fri, 05 Nov 2021 01:18:03 GMT

@tanoue @torus1000

overwrite the sources/meta-freescale/recipes-security/optee-imx

Re: "optee_example_hello_world” running causes kernel panic with i.MX8M mini

tanoue — Mon, 08 Nov 2021 10:43:50 GMT

@Zhiming_Liu

Thank you for pointing out mistakes in my step.

I was able to execute optee_example_hello_world after installing .deb file.

Then, I was also able to build optee_examples (including CA and TA) with bitbake command.

By the way, I wondering that "Hello World" and "Goodbye" are not shown.

Is it correct?