linux-kernel - Re: [BUG] x86: failed to boot a kernel on a Ryzen machine

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Date:   Mon, 24 Apr 2017 13:07:53 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Satoru Takeuchi <satoru.takeuchi@...il.com>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [BUG] x86: failed to boot a kernel on a Ryzen machine

On Mon, Apr 24, 2017 at 03:58:05PM +0900, Satoru Takeuchi wrote:
> Recently I bought a new Ryzen machine. When I tried to test v4.11-rc8 on it, it failed to boot
> with the following panic log.
> 
> ```
> ...
> [    0.227720] raid6: sse2x1   gen()  7985 MB/s
> [    0.295709] raid6: sse2x1   xor()  8181 MB/s
> [    0.363706] raid6: sse2x2   gen() 17531 MB/s
> [    0.431699] raid6: sse2x2   xor() 11098 MB/s
> [    0.499693] raid6: sse2x4   gen() 18509 MB/s
> [    0.567688] raid6: sse2x4   xor() 10177 MB/s
> [    0.571692] invalid opcode: 0000 [#1] SMP
> [    0.572312] Modules linked in:
> [    0.572822] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.11.0-rc8-ktest #1
> [    0.573734] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
				^^^^^^^^^^^^^^

Next time your report a bug, say it is a guest on the *very* first line
of your report.

Now, how do you start your guest exactly? Full cmdline pls.

-- 
Regards/Gruss,
    Boris.

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