All of lore.kernel.org
 help / color / mirror / Atom feed
From: Luis Goncalves <lgoncalv@redhat.com>
To: "Ahmed S. Darwish" <a.darwish@linutronix.de>
Cc: Christoph Mathys <eraserix@gmail.com>,
	Linux RT Users <linux-rt-users@vger.kernel.org>
Subject: Re: Hung task in 4.9 using kvm 5.2
Date: Tue, 8 Jun 2021 17:32:29 -0300	[thread overview]
Message-ID: <CAD8J--9oKRQ2Fb9Q6Rtnfg21iU0NHYk-u8oVN-Rn=HqsEu93gQ@mail.gmail.com> (raw)
In-Reply-To: <YL842Rg3yRcTpW2r@lx-t490>

On Tue, Jun 8, 2021 at 6:31 AM Ahmed S. Darwish <a.darwish@linutronix.de> wrote:
>
> On Mon, Jun 07, 2021, Christoph Mathys wrote:
> >
> > When running kvm 5.2 on 4.9-rt (I've yet to verify if !RT is also
> > affected), kvm gets stuck regulary requiring a reboot. I get the
> > hung_task warning below.
> >
> > Any thoughts on how to avoid this problem?
> >
>
> Did you try running the same configuration with lockdep ON?

Along with Ahmed's suggestion, would you mind testing with v4.9.271-rt182?

Also, is there any extra step to reproduce this problem or simply
firing up a VM is enough
to trigger the problem?

Luis


  reply	other threads:[~2021-06-08 20:32 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-07 14:56 Hung task in 4.9 using kvm 5.2 Christoph Mathys
2021-06-08  9:31 ` Ahmed S. Darwish
2021-06-08 20:32   ` Luis Goncalves [this message]
2021-06-09  8:55     ` Christoph Mathys
2021-06-10  7:28       ` Christoph Mathys
2021-06-15 13:49         ` Christoph Mathys

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CAD8J--9oKRQ2Fb9Q6Rtnfg21iU0NHYk-u8oVN-Rn=HqsEu93gQ@mail.gmail.com' \
    --to=lgoncalv@redhat.com \
    --cc=a.darwish@linutronix.de \
    --cc=eraserix@gmail.com \
    --cc=linux-rt-users@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.