linux-kernel - Re: Linux 4.9.6 ( Restore IO-APIC irq_chip retrigger callback , breaks my box )

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Date:   Sat, 11 Feb 2017 15:21:00 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Gabriel C <nix.or.die@...il.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        stable <stable@...r.kernel.org>, lwn@....net,
        Jiri Slaby <jslaby@...e.cz>,
        Ruslan Ruslichenko <rruslich@...co.com>
Subject: Re: Linux 4.9.6 ( Restore IO-APIC irq_chip retrigger callback ,
 breaks my box )

On Sat, Feb 11, 2017 at 02:09:14PM +0100, Gabriel C wrote:
> Adding ' dis_ucode_ldr ' to commandline makes the kernel hangs right after :

Wait a minute, are you saying that without dis_ucode_ldr you can't even
boot so far?

> clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x20ac7f6ecc6, max_idle_ns: 440795315461 ns
> ...
> 
> and I have the bug triggered really quick..
> 
> Also I cannot get netconsole to work , I'm sure is some problem here local and I don't have
> any serial cable around right now. The only way I saw now to give you at least some ifo is to
> make an video of that crash. You can find it there :
> 
> http://ftp.frugalware.org/pub/other/people/crazy/kernel/t/crash.mp4

Watchdog fires on all cores showing they're all idle. For some reason,
not all cores get to dump the watchdog splat, though. Some seem really
stuck.

And you have TAINT_FIRMWARE_WORKAROUND due to
intel_prepare_irq_remapping() noticing intr remapping is broken on that
box.

Would be better if you could disable that frugalware splash screen and
switch to grub console mode so that we can see the very beginning of the
boot.

Btw, your BIOS is from 2013. Is there new one, per chance, on your
vendor's site? Might wanna consider updating it...

-- 
Regards/Gruss,
    Boris.

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