linux-kernel - Re: kernel BUG at arch/x86/kernel/apic/apic.c with Dell server with x2APIC enabled and unset X2APIC

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Message-ID: <20200221155706.GJ25747@zn.tnic>
Date:   Fri, 21 Feb 2020 16:57:06 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Paul Menzel <pmenzel@...gen.mpg.de>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "x86@...nel.org" <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, it+linux-x86@...gen.mpg.de
Subject: Re: kernel BUG at arch/x86/kernel/apic/apic.c with Dell server with
 x2APIC enabled and unset X2APIC

On Fri, Feb 21, 2020 at 03:37:23PM +0100, Paul Menzel wrote:
> Dear Linux folks,
> 
> 
> On the Dell PowerEdge T640/04WYPY, BIOS 2.4.8 11/27/2019, Linux 5.4.14 (and 4.19.57) with
> unset `IRQ_REMAP` and `X86_X2APIC` crashes on start-up, when x2APIC is enabled in the
> firmware.

Does it happen with latest 5.5-stable too? I see 5.5.5 is the last one...

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette