From: Breno Leitao <leitao@debian.org>
To: Jim Mattson <jmattson@google.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-perf-users@vger.kernel.org, rcu@vger.kernel.org,
rbc@meta.com
Subject: Re: kvm/x86: perf: Softlockup issue
Date: Wed, 4 Oct 2023 03:08:54 -0700 [thread overview]
Message-ID: <ZR05tlRqF9c09/l6@gmail.com> (raw)
In-Reply-To: <CALMp9eSozxk-nuwWF3Xvg7fqC5doHKc5-6Nh40EnmzVRX+EQ4Q@mail.gmail.com>
Hello Jim,
On Tue, Oct 03, 2023 at 07:36:48AM -0700, Jim Mattson wrote:
> On Tue, Oct 3, 2023 at 6:52 AM Breno Leitao <leitao@debian.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/?
Thanks for the heads-up. These two patches indeed fix the problem.
Thanks for getting the problem fixed.
Tested-by: Breno Leitao <leitao@debian.org>
Breno
prev parent reply other threads:[~2023-10-04 10:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-03 13:52 kvm/x86: perf: Softlockup issue Breno Leitao
2023-10-03 14:36 ` Jim Mattson
2023-10-04 10:08 ` Breno Leitao [this message]
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