Re: Interrupted IO causing async errors

[Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>]

On Thu, Jun 23, 2016 at 08:15:29PM -0400, Chuck Lever wrote:
> When an application is signaled, outstanding RPCs are terminated.
> When an RPC completes, whether because a reply was received,
> or because the local application has died, any memory that was
> registered on behalf of that RPC is invalidated before it can be
> used for something else. The data in that memory remains at rest
> until invalidation and DMA unmapping is complete.

> It appears that your server is attempting to read an argument or
> write a result for an RPC that is no longer pending. I think both
> sides should report a transport error, and the connection should
> terminate. No other problems, though: other operation should
> continue normally after the client re-establishes a fresh connection.

Yuk! A transport tare down and restart on user space CTRL-C/etc ?
Isn't that a little too common and a little too expensive to be a
permanent solution?

Jason
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