linux-kernel - Re: kvm/x86: perf: Softlockup issue

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Date:   Tue, 3 Oct 2023 07:36:48 -0700
From:   Jim Mattson <jmattson@...gle.com>
To:     Breno Leitao <leitao@...ian.org>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org, rcu@...r.kernel.org, rbc@...a.com
Subject: Re: kvm/x86: perf: Softlockup issue

On Tue, Oct 3, 2023 at 6:52 AM Breno Leitao <leitao@...ian.org> wrote:
>
> I've been pursuing a bug in a virtual machine (KVM) that I would like to share
> in here. The VM gets stuck when running perf in a VM and getting soft lockups.
>
> The bug happens upstream (Linux 6.6-rc4 - 8a749fd1a8720d461). The same kernel
> is being used in the host and in the guest.

Have you tried https://lore.kernel.org/kvm/169567819674.170423.4384853980629356216.b4-ty@google.com/?