linux-kernel - Re: [RFC PATCH v2 12/12] rv: Add opid per-cpu monitor

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: <20250527145032.fIN-37M_@linutronix.de>
Date: Tue, 27 May 2025 16:50:32 +0200
From: Nam Cao <namcao@...utronix.de>
To: Gabriele Monaco <gmonaco@...hat.com>
Cc: linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>,
	linux-trace-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Tomas Glozar <tglozar@...hat.com>, Juri Lelli <jlelli@...hat.com>
Subject: Re: [RFC PATCH v2 12/12] rv: Add opid per-cpu monitor

On Tue, May 27, 2025 at 04:35:04PM +0200, Gabriele Monaco wrote:
> Thanks for trying it out, and good to know about this stressor.
> Unfortunately it's a bit hard to understand from this stack trace, but
> that's very likely a problem in the model.  I have a few ideas where that
> could be but I believe it's something visible only on a physical machine
> (haven't tested much on x86 bare metal, only VM).
>
> You're running on bare metal right?

No, it's QEMU:

qemu-system-x86_64 -enable-kvm -m 2048 -smp 4 \
    -nographic \
    -drive if=virtio,format=raw,file=bookworm.img \
    -kernel /srv/work/namcao/linux/arch/x86/boot/bzImage \
    -append "console=ttyS0 root=/dev/vda rw" \

The kernel is just x86 defconfig + the monitors.

Nam