[PATCH 0/1] Fix for nvme-rdma host crash in nvmf-all.3

[Steve Wise]

> 
> > This patch fixes a touch-after-free bug I discovered.  It is against
> > nvmf-all.3 branch of git://git.infradead.org/nvme-fabrics.git.  The patch
> > is kind of ugly, so any ideas on a cleaner solution are welcome.
> 
> Hey Steve, I don't see how this bug fixes the root-cause. Not exactly
> sure we understand the root-cause. Is it possible that this is a chelsio
> specific issue with send completion signaling (like we saw before)? Did
> this happen with a non-chelsio device?

Due to the stack trace, I believe this is a similar issue we saw before.  It is
probably chelsio-specific.  I don't see it on mlx4.

The fix for the previous occurrence of this crash was to signal all FLUSH
commands.  Do you recall why that fixed it?  Perhaps this failure path needs
some other signaled command to force the pending unsignaled WRs to be marked
"complete" by the driver?

Steve.