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Bug#783063: Xen domU freeze with "Guest Rx stalled"



On Tue, 2015-04-21 at 14:07 +0100, Ian Campbell wrote:
> On Tue, 2015-04-21 at 13:31 +0200, Wolodja Wentland wrote:
> > Package: src:linux
> > Version: 3.16.7-ckt4-3~bpo70+1
> > Severity: important
> > 
> > Hello,
> > 
> > ever since upgrading some of our Xen dom0s to the kernel in backports at
> > that time (3.16.7-ckt4-3~bpo70+1) we are seeing domU freezes with output such
> > as:
> > 
> >   [2951591.712865] vif vif-1-0 vif1.0: Guest Rx stalled
> >   [2951591.713145] public: port 2(vif1.0) entered disabled state
> > 
> > and a normal shutdown fails with:
> > 
> >   [2015-04-21 11:24:03 3895] DEBUG (XendDomainInfo:1881) XendDomainInfo.handleShutdownWatch
> >   [2015-04-21 11:27:02 3895] INFO (XendDomainInfo:2114) Domain shutdown timeout expired: name=foo-domU1 id=1
> >   [2015-04-21 11:28:02 3895] DEBUG (XendDomainInfo:524) XendDomainInfo.shutdown(poweroff)
> 
> OOI what is your dom0 environment/versions etc?
> 
> > 
> > so that we had to destroy it for it to (re-)boot.
> > 
> > It should be noted that we have not yet seen this problem on PVHVM guests, but
> > only on PV ones. The domains are shown as running (state r), but do not react to
> > any commands.
> 
> It seems like it has deadlocked, but I don't know if that is a Xen issue
> or some generic issue.
> 
> > A patch that *might* be related is xen-netback-reintroduce-guest-Rx-stall-detection.patch
> > (cf. [0]), but we are not sure about that yet.
> 
> This should be in the kernel you are running already, it was added in
> 3.16.7-ckt2.
> 
> Anyway, bpo now contains 3.16.7-ckt7-1~bpo70+1 which includes quite a
> few stable updates over the version you are running. Please could you
> try that.
> 
> There is a fair bit of stuff only in jessie in the 3.16.7-ckt9-2. Not
> sure when that is due to hit bpo though.

In fact 3.16.7-ckt9-2~bpo70+1 has just been uploaded, so best to test
that.


> 
> Ian.
> 
> 


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