linux-kernel - Bug report for kernel v4.15-rc8+

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Message-ID: <629765464.1655403.1628264743080.JavaMail.zimbra@email.it>
Date:   Fri, 6 Aug 2021 17:45:43 +0200 (CEST)
From:   blinkin@...il.it
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-kernel@...r.kernel.org
Subject: Bug report for kernel v4.15-rc8+

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