nvmf/rdma host crash during heavy load and keep alive recovery

[Christoph Hellwig]

On Fri, Jul 29, 2016 at 04:40:40PM -0500, Steve Wise wrote:
> Running many fio jobs on 10 NVMF/RDMA ram disks, and bringing down and back up
> the interfaces in a loop uncovers this crash.  I'm not sure if this has been
> reported/fixed?  I'm using the for-linus branch of linux-block + sagi's 5
> patches on the host.  
> 
> What this test tickles is keep-alive recovery in the presence of heavy
> raw/direct IO.  Before the crash there are logs of these logged, which is
> probably expected:

With what fixes does this happen?  This looks pretty similar to an
issue you reported before.