Null pointer derefernece on module 'pinctrl_elkhartlake'

[HiroyukiKosaka]

A kernel module provided by ECI causes NULL pointer dereference. We do not know what this module does. Can we ignore this error? Does it have any impact for evaluation?

Please give us your advice. Thanks!

Jul 4 11:06:05 seaurchin kernel: BUG: kernel NULL pointer dereference, address: 0000000000000000

(...snip...)

Jul 4 11:06:05 seaurchin kernel: Modules linked in: pinctrl_elkhartlake(+)

For more details, Please see attached error log files.

[JesusE_Intel]

Hi HiroyukiKosaka,

Allow me to setup a system to reproduce the issue. In the meantime, could you confirm that you build the core-bullseye image from ECI? Could you share more details of the system that the image was installed on? Also, which version of ECI are you using?

Regards,

Jesus

[JesusE_Intel]

Hi HiroyukiKosaka,

I built and installed the core-bullseye ECI target from ECI 3.0.2 and did not observe the error you are seeing. Please let me know if you used a different ECI target or ECI version. Thanks.

Regards,

Jesus

[HiroyukiKosaka]

Sorry for the late reply. In Japan, companies were on summer vacation for the whole of last week, so I couldn't reply.

How to install ECI:
I would follow the link below.
Setup ECI APT Repository—ECI documentation (intel.com)
1. Perform BIOS settings as much as possible
2. Install pure Debian 11.7 on target
3. Install eci-customizations and linux-intel-rt packages using ECI APT Repository

OS and ECI version information is as follows.
Debian version: 11.7
ECI version: 3.0.2 (as of 2023/07/04)

Also, the version/build information about the CPU/BIOS is as follows.
Client Silicon Version: 0.2.0.15
Project Version: EHLSFWI1.R00.3162.A01.21041311432
Build Date: 14:32 04/13/2021

Thanks,

Kosaka

[JesusE_Intel]

Hi Kosaka,

No worries! Thanks for providing the additional information. Would you also share some hardware details? What system are you using and what processor?

Regards,

Jesus

[HiroyukiKosaka]

Hi Jesus,  We are using Elkhart CRB from Intel Penang of NEX/IOTG. CPU is a special SKU not described.

Thanks,

Kosaka

[JesusE_Intel]

Hi Kosaka,

Thanks for the additional information, I was able to reproduce on an Elkhart Lake system in my lab, I have opened a bug with the development team for further assistance. We will get back to you as soon as possible.

Regards,

Jesus

[John-Ling]

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[Lay]

Hi,

The issue should fix in EHL MR3 BIOS per https://bugzilla.redhat.com/show_bug.cgi?id=1948468#c11 

Can you update the BIOS to test?

[HiroyukiKosaka · Accepted solution]

Thanks for your help. I was able to complete the installation without any issues on the board with updated BIOS. Therefore, this issue is now resolved.

[JesusE_Intel]

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