Re: Random system freezes with Linux 6.12 + Xenomai 3.3.1 on Intel Ultra 5 125H

On 31.07.26 06:25, 刘杨 wrote:
> Hello,
> I am using Linux kernel 6.18 with Xenomai 3.3.1. I have set i915.modeset=0 in GRUB to prevent the i915 driver from loading.
> Since trace‑cmd logs cannot be dumped when the kernel hangs, I configured the following sysctl parameters:
> plaintext
> 
> sudo sysctl -w kernel.panic_on_rcu_stall=1
> sudo sysctl -w kernel.ftrace_dump_on_oops=1
> sudo sysctl -w kernel.panic=0
> 
> The full serial log is attached. Could you please help analyze whether the log contains sufficient information for troubleshooting? Thank you.

I'm missing cobalt events other cores and an annotation inside the trace
where the error was noticed. That's why I proposed a different recording
method.

Also, as the RCU stall detection may be delayed too much to still see
normal operation in the trace, you might have to tune the timeout
(https://docs.kernel.org/RCU/stallwarn.html#fine-tuning-the-rcu-cpu-stall-detector)
until we find an earlier problem indicator.

Jan

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