linux-kernel - Re: AMD zen microcode updates breaks boot

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241018115857.GBZxJNgZY-NedtPrxX@fat_crate.local>
Date: Fri, 18 Oct 2024 13:58:57 +0200
From: Borislav Petkov <bp@...en8.de>
To: Jens Axboe <axboe@...nel.dk>
Cc: Thomas Gleixner <tglx@...utronix.de>,
	the arch/x86 maintainers <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"regressions@...ts.linux.dev" <regressions@...ts.linux.dev>
Subject: Re: AMD zen microcode updates breaks boot

On Thu, Oct 17, 2024 at 08:40:18AM -0600, Jens Axboe wrote:
> Maybe? There might be some way to do it through ilo. I'm not near the box
> today, but I can take a look at that tomorrow most likely.

So I found a box exactly like yours:

[    3.699583] smpboot: CPU0: AMD EPYC 9754 128-Core Processor (family: 0x19, model: 0xa0, stepping: 0x2)

and it updates just fine and just like on yours:

[   28.457381] microcode: Current revision: 0x0aa00215
[   28.462827] microcode: Updated early from: 0x0aa00215

The next thing that is catching my eye is your simulated NUMA config:

[    1.668943] smp: Brought up 32 nodes, 512 CPUs

Lemme see if I can repro that here.

Thx.

-- 
Regards/Gruss,
    Boris.

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