linux-kernel - Re: [RFC] AMD Zen4 CPU bug? Spurious SMT Sibling Invalid Opcode Speculation

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Message-Id: <797F7A00-541E-4333-B653-1120DF5C56B1@exactcode.com>
Date:   Fri, 6 Oct 2023 11:21:13 +0200
From:   René Rebe <rene@...ctcode.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [RFC] AMD Zen4 CPU bug? Spurious SMT Sibling Invalid Opcode
 Speculation

Hi,

> On 5. Oct 2023, at 00:25, Borislav Petkov <bp@...en8.de> wrote:
> 
> On Wed, Oct 04, 2023 at 05:29:32PM +0200, René Rebe wrote:
>> during cross compiling our “Embedded” Linux Distribution T2 (https://t2sde.org) I observers some random illegal instruction build errors since we got ourselves a Ryzen 7950x on launch day a year ago:
> 
> Thanks for reporting. I'm looking into it.

Thank you Borislav, were you able to reproduce this on Zen 4 you have access to?

Thanks,
	René

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