[TESTCASE] i9-12900TE crashes hard when E-cores in Performance (H/W p_state) mode

[JBourquard]

Model : 12th Gen Intel(R) Core(TM) i9-12900TE
Microcode: 0x2e

I found a testcase that crashes the CPU, if (and only if) efficiency cores are set to "performance" hardware p_state mode.

This only happens for E-cores. P-cores do not exhibit this problem. And this is *not* a thermal issue.

This was reproduced on a Karbon 803 from OnLogic, with two different i9-12900TE CPUs.

OS: Linux (many different kernels, including latest 6.5.1). Also happens on Ubuntu Server 22.04.3 with latest updates.

This problem never happens with regular CPU/RAM stress testing tools. So I built a bootable testcase that can be launched in 2 minutes:

[!! Pulled my link for security reasons]

(can take a few hours before the crash happens).

The problem *could* be in Linux hardware p-states driver, but it can also be a microcode bug!

I already contacted OnLogic for support and they replaced the CPU, but of course the problem persists.

Could someone please direct me to Intel for further investigation?

Thanks in advance,

Joël

[DeividA_Intel]

Hello JBourquard,  

Thank you for posting on the Intel® communities.  

We would like to inform you that we have a forum for these specific issues and products, so we are moving it to the "Embedded Intel® Core™ Processors" forum so you can get better support for this matter.  

https://community.intel.com/t5/Embedded-Intel-Core-Processors/bd-p/embedded-core-processors

 Regards,  

Deivid A.  

Intel Customer Support Technician  

[Jaime_Lizarme]

Hello @JBourquard ,

Thank you for contacting Intel Embedded Community.

We sent an email to the address associated with this account with information that may help you.

Best regards,

Jaime L.

[JBourquard · Accepted solution]

Hi @Jaime_Lizarme , @DeividA_Intel ,

Thank you for your response, much appreciated.

The PSIRT is taking care of the case now, so we can probably close this topic.

Thanks again!