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

Sepherosa Ziehau sepherosa at
Tue Jul 5 18:22:56 PDT 2016

On Wed, Jul 6, 2016 at 6:17 AM, Stefan Unterweger
<232.20711 at> wrote:
> Sorry for the long delay.  Other, more urgent projects kept me so busy
> that I didn’t manage to catch up with this thread.
> * Matthew Dillon on Fri, May 27, 2016 at 10:08:06AM -0700:
>> Virtio (for block storage devices) could be the cause.  There are known
>> bugs in the DragonFly driver for virtio which haven't been tracked down yet
>> (not enough of the devs are using virtual hosting to be able to reproduce
>> the problem in a debugable way).
> My employer wants to stick with Dragonfly; we have already invested too
> much time in building this system to be able to switch to another
> operating system, it would cost us months to get an inferior system
> built with something else.
> Is there something I can to to aid in debugging this?  I cannot code,
> but I could set up test machines and try out patches.  Perhaps we could
> set up and pay for a virtual server for the devs and give out full
> access, if that would help.  We‘re a small startup and our funds are
> limited, but anything that we can do to help make this go away is
> game. :o)

Can you try the latest master?  I think it has been fixed there.


Tomorrow Will Never Die

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