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Re: Bug#863266: bug 863266 is forwarded to https://bugzilla.redhat.com/show_bug.cgi?id=1432684

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  Re: Bug#863266: bug 863266 is forwarded to  https://bugzilla.redhat.com/show_bug.cgi?id=1432684 Guido Günther <agx@sigxcpu.org> - 2017-09-15 12:20 +0200
    Processed: Re: Bug#863266: bug 863266 is forwarded to  https://bugzilla.redhat.com/show_bug.cgi?id=1432684 owner@bugs.debian.org (Debian Bug Tracking System) - 2017-09-15 12:30 +0200
    Bug#863266: bug 863266 is forwarded to https://bugzilla.redhat.com/show_bug.cgi?id=1432684 Marc Haber <mh+debian-bugs@zugschlus.de> - 2017-09-18 10:20 +0200
      Bug#863266: bug 863266 is forwarded to https://bugzilla.redhat.com/show_bug.cgi?id=1432684 Guido Günther <agx@sigxcpu.org> - 2017-09-18 19:20 +0200

#58926 — Re: Bug#863266: bug 863266 is forwarded to https://bugzilla.redhat.com/show_bug.cgi?id=1432684

control: reassign -1 linux
control: found -1 linux/4.12.6-1
control: affects -1 libvirt-daemon-system

Hi,
On Fri, Sep 15, 2017 at 11:30:55AM +0200, Marc Haber wrote:
> On Sat, Sep 09, 2017 at 12:21:01PM +0200, Guido Günther wrote:
> > forwarded 863266 https://bugzilla.redhat.com/show_bug.cgi?id=1432684
> 
> That's it. Will try reverting 319554f284dda9f2737d09df82ba3610bd8ddea3
> in my kernel.

Let's reassign to the kernel then.

Dear kernel maintainers. The symptom is that libvirt fails to detect
ports already in use for spice. See

    https://bugzilla.redhat.com/show_bug.cgi?id=1432684#c17

for a simple testcase not involving libvirt at all. I'll post the
summary (by Cole Robinson) here:

# This bit of code helps demonstrate the issue. There's definitely
#  something weird going on. The port check logic is adapted from
#  libvirt's code, I can't speak to all the bits there.
# 
# In a separate terminal, qemu-kvm -vnc 127.0.0.1:0 to grab port 5900. Then do this:
# 
# $ gcc bind-collision.c && ./a.out
# bind: Address already in use
# AF_INET check failed.
# $ gcc -D CHECK_IPV6 bind-collision.c && ./a.out
# AF_INET6 success
# AF_INET success
# $ gcc bind-collision.c && ./a.out
# AF_INET success
#
# By default the script will just check to see if we can bind to ipv4
# 5900. When qemu is holding that port, this check rightfully
# fails. When we compile with -D CHECK_IPV6, this adds ipv6 checking
# first. This succeeds, and then all subsequent ipv4 checks also
# succeed, which seems wrong.

Cheers,
 -- Guido

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#58927 — Processed: Re: Bug#863266: bug 863266 is forwarded to https://bugzilla.redhat.com/show_bug.cgi?id=1432684

Processing control commands:

> reassign -1 linux
Bug #863266 [libvirt-daemon] libvirt-daemon: spice port conflict - multiple VMs want Port 5900
Bug reassigned from package 'libvirt-daemon' to 'linux'.
No longer marked as found in versions libvirt/3.6.0-1 and libvirt/3.0.0-4.
Ignoring request to alter fixed versions of bug #863266 to the same values previously set
> found -1 linux/4.12.6-1
Bug #863266 [linux] libvirt-daemon: spice port conflict - multiple VMs want Port 5900
Marked as found in versions linux/4.12.6-1.
> affects -1 libvirt-daemon-system
Bug #863266 [linux] libvirt-daemon: spice port conflict - multiple VMs want Port 5900
Added indication that 863266 affects libvirt-daemon-system

-- 
863266: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863266
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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#58939 — Bug#863266: bug 863266 is forwarded to https://bugzilla.redhat.com/show_bug.cgi?id=1432684

On Fri, Sep 15, 2017 at 12:18:12PM +0200, Guido Günther wrote:
> Let's reassign to the kernel then.
> 
> Dear kernel maintainers. The symptom is that libvirt fails to detect
> ports already in use for spice. See
> 
>     https://bugzilla.redhat.com/show_bug.cgi?id=1432684#c17
> 
> for a simple testcase not involving libvirt at all. I'll post the
> summary (by Cole Robinson) here:

Patches on http://www.spinics.net/lists/netdev/msg454644.html and
onwards, four pieces, all needed. I verified that they fix the issue on
Debian stable with a vanilla 4.13.2 kernel.

Greetigns
Marc

-- 
-----------------------------------------------------------------------------
Marc Haber         | "I don't trust Computers. They | Mailadresse im Header
Leimen, Germany    |  lose things."    Winona Ryder | Fon: *49 6224 1600402
Nordisch by Nature |  How to make an American Quilt | Fax: *49 6224 1600421

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#58941 — Bug#863266: bug 863266 is forwarded to https://bugzilla.redhat.com/show_bug.cgi?id=1432684

Hi,
On Mon, Sep 18, 2017 at 10:15:33AM +0200, Marc Haber wrote:
> On Fri, Sep 15, 2017 at 12:18:12PM +0200, Guido Günther wrote:
> > Let's reassign to the kernel then.
> > 
> > Dear kernel maintainers. The symptom is that libvirt fails to detect
> > ports already in use for spice. See
> > 
> >     https://bugzilla.redhat.com/show_bug.cgi?id=1432684#c17
> > 
> > for a simple testcase not involving libvirt at all. I'll post the
> > summary (by Cole Robinson) here:
> 
> Patches on http://www.spinics.net/lists/netdev/msg454644.html and
> onwards, four pieces, all needed. I verified that they fix the issue on
> Debian stable with a vanilla 4.13.2 kernel.

Thanks for testing and following up on this. Hopefully we'll see this in
the Debian kernels soon.
Cheers,
 -- Guido

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