Bug report for kernel v4.15-rc8+

[blinkin]

Hello,

I think I found a bug in kernel 4.15-rc8+. Git bisect tells me that the incriminating commit is https://github.com/openSUSE/kernel/commit/a0c9259dc4e1923a98356967ce8b732da1979df8.

The bug doesn't seem widespread and it may be affecting only my hardware (Asuspro P2530UJ laptop).
I also found a workaround (boot kernel parameters combination) thanks to your comments on this (seemingly unrelated) bugreport: https://bugzilla.kernel.org/show_bug.cgi?id=208097

I'm not sure where and how to report it, the kernel I used for the tests is built from the opensuse tree but it looks like an upstream bug.
Can you give me pointers on how to proceed from here? I can provide informations about the symptoms, the hardware config and the workaround but I know nothing about CPU/IRQ management in the linux kernel.

Thanks for your time