nvme-tcp poll queue crash

[Keith Busch]

On Mon, Mar 20, 2023 at 03:51:13PM +0100, Daniel Wagner wrote:
> On Mon, Mar 20, 2023 at 04:36:58PM +0200, Sagi Grimberg wrote:
> > This was reported and is discussed in thread:
> > nvme-tcp: kernel NULL pointer dereference, address: 0000000000000034
> 
> Thanks, I couldn't remember this discussion.

It just happened late last week, so no worries.

I believe we can get rid of bio and bdev dependency, and I am working on
detangling how to get the cookie through without these.