From: "Richard W.M. Jones" <rjones@redhat.com>
To: richard -rw- weinberger <richard.weinberger@gmail.com>
Cc: Richard Weinberger <richard@nod.at>,
"user-mode-linux-devel@lists.sourceforge.net"
<user-mode-linux-devel@lists.sourceforge.net>
Subject: Re: [uml-devel] How to reliably kill all vmlinux processes for a single VM?
Date: Thu, 15 Aug 2013 19:01:14 +0100 [thread overview]
Message-ID: <20130815180114.GP5918@redhat.com> (raw)
In-Reply-To: <CAFLxGvxSW5LD3_wQajM-B9L=x=wrgzZcsUVrPYnAUBhjA2YrDQ@mail.gmail.com>
On Thu, Aug 15, 2013 at 07:34:04PM +0200, richard -rw- weinberger wrote:
> On Tue, Aug 13, 2013 at 2:25 PM, Richard W.M. Jones <rjones@redhat.com> wrote:
> > On Tue, Aug 13, 2013 at 01:04:01PM +0100, Richard W.M. Jones wrote:
> >> OK, I understand what's going wrong and how to reproduce the
> >> signal-to-parent problem. It does look like a bug in vmlinux.
> >>
> >> It happens if the init process (PID 1) inside the VM gets a segfault.
> >
> > To add an additional data-point, applying the attached patch causes
> > the rogue SIGTERM-to-parent signal to disappear. So at least we know
> > where it comes from!
>
> I think we should call setsid() at UML startup.
> Thanks for reporting that issue.
>
> BTW: You know that UML has a management console?
> http://user-mode-linux.sourceforge.net/old/mconsole.html
Yup, using the management console could be a good idea.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
libguestfs lets you edit virtual machines. Supports shell scripting,
bindings from many languages. http://libguestfs.org
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prev parent reply other threads:[~2013-08-15 18:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-11 17:48 [uml-devel] How to reliably kill all vmlinux processes for a single VM? Richard W.M. Jones
2013-08-12 7:37 ` richard -rw- weinberger
2013-08-12 8:15 ` richard -rw- weinberger
2013-08-12 8:53 ` Richard W.M. Jones
2013-08-13 10:36 ` Richard W.M. Jones
2013-08-13 10:49 ` Richard Weinberger
2013-08-13 11:06 ` Richard W.M. Jones
2013-08-13 12:04 ` Richard W.M. Jones
2013-08-13 12:25 ` Richard W.M. Jones
2013-08-15 17:34 ` richard -rw- weinberger
2013-08-15 18:01 ` Richard W.M. Jones [this message]
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