Messages in this thread | | | Subject | Re: kernel BUG at arch/x86/kernel/apic/apic.c with Dell server with x2APIC enabled and unset X2APIC | From | Paul Menzel <> | Date | Mon, 24 Feb 2020 13:59:43 +0100 |
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Dear Thomas,
On 2020-02-21 17:27, Thomas Gleixner wrote:
> Paul Menzel writes: >> >> 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. > >> [ 3.883893] Switched APIC routing to physical flat. >> [ 3.888904] ------------[ cut here ]------------ >> [ 3.893641] kernel BUG at arch/x86/kernel/apic/apic.c:1616! > > So the APIC is not registered. >> >> `noapic` and `acpi=off` separately did not work, but `noapic acpi=off` hit the other >> panic. > > I have no idea what you are talking about. > > Which command line options are set to reproduce the above?
Sorry, please ignore my debugging attempts. It fails without any of these.
> Also please test the latest stable kernels not some random ones.
Please see my reply to Borislav with the logs of Linux 5.6-rc2.
Kind regards,
Paul
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