Re: Random server crashes every few weeks (smp_invltlb: endless loop […] retrysmp_invltlb: ipi sent)

[Matthew Dillon]

Its likely another virtio bug.  We just haven't been able to test it very
well.  I'll take a pass on it and see if I can find anything obvious.

-Matt

On Mon, Aug 8, 2016 at 12:02 PM, Stefan Unterweger <
232.20711 at chiffre.aleturo.com> wrote:

>
> * Matthew Dillon on Mon, Aug 08, 2016 at 11:08:40AM -0700:
> > And (2) What is the device attachment for the swap drive (in the dmesg
> > output).
>
> The swap drive is vbd1s0b, with the following attachment:
> | virtio_pci2: <VirtIO PCI Block adapter> port 0xc040-0xc07f mem
> 0xfebf1000-0xfebf1fff irq 10 at device 6.0 on pci0
> | vtblk1: <VirtIO Block Adapter> on virtio_pci2
> | virtio_pci2: host features: 0x710006d4 <EventIdx,RingIndirect,
> NotifyOnEmpty,Topology,WriteCache,SCSICmds,BlockSize,
> DiskGeometry,MaxNumSegs>
> | virtio_pci2: negotiated features: 0x10000254 <RingIndirect,WriteCache,
> BlockSize,DiskGeometry,MaxNumSegs>
>
> I have attached the full dmesg for reference.
>
> > Indefinite wait buffer typically means the disk driver locked up while
> the
> > system was trying to swap to/from it.  Two questions:  (1) Is the swap
> > encrypted ?
>
> It is indeed encrypted.  We don’t want to trust the data center
> operator, hence everything with the exception of /boot is encrypted.
>
> From fstab:
> | /dev/part-by-uuid/3c563c78-c204-11e5-aff0-010000000000 none swap
> sw,crypt 0 0
>
>
>     Stefan
>
>
> > On Mon, Aug 8, 2016 at 5:18 AM, Stefan Unterweger <
> 232.20711 at chiffre.aleturo.com> wrote:
> > > Another crash with 09b0c4f76, but this one looks different.  The
> console
> > > was scrolling endless streams of lines like this one:
>
> > > | swap_pager: indefinite wait buffer:  bp 0xffffffe00e57bea8 offset:
> 4133535744, size: 4096
>
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