Re: Linux 6.7-rc1+: WARNING at drivers/xen/evtchn.c:167 evtchn_interrupt

[Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>]

On Sat, Dec 02, 2023 at 10:46:38PM +0100, Marek Marczykowski-Górecki wrote:
> On Fri, Dec 01, 2023 at 09:29:30AM +0100, Juergen Gross wrote:
> > Hi Marek,
> > 
> > On 30.11.23 03:34, Marek Marczykowski-Górecki wrote:
> > > Hi,
> > > 
> > > While testing 6.7-rc3 on Qubes OS I found several warning like in the
> > > subject in dom0 log. I see them when running 6.7-rc1 too. I'm not sure
> > > what exactly triggers the issue, but my guess would be unbinding an
> > > event channel from userspace (closing vchan connection).
> > > 
> > > Specific message:
> > > 
> > > [   83.973377] ------------[ cut here ]------------
> > > [   83.975523] Interrupt for port 77, but apparently not enabled; 
> > > per-user 00000000a0e9f1d1
> > 
> > Just a guess, but I think this might happen when the vchan connection
> > is closed while there is still some traffic. This could result in events
> > triggering in parallel to unbinding the event channel.
> > 
> > Could you please test the attached patch (only compile tested)?
> 
> Unfortunately that doesn't help, I get exactly the same traceback.

Hi, this is still an issue on 6.7.2, any other ideas?

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab

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