[BUG report] kernel warnings with Samsung 970 EVO 2TB SSD

[Keith Busch]

On Sat, Aug 16, 2025 at 01:40:44PM +0200, Diederik de Haas wrote:
> Hi,
> 
> I have a Samsung 970 EVO 2TB SSD and I see these kernel warnings:

... 
 
> I wonder if something can be done to fix those warnings.

Are you talking about this message?

   nvme nvme0: missing or invalid SUBNQN field

You can't do anything about it, but I wouldn't worry about it either.

If you want to see what the driver is reacting to, you can check the
subnqn from command line:

  # nvme id-ctrl /dev/nvme0 | grep subnqn

It'll probably be all zeros. The field has been required by spec, but
the driver tolerates ones that don't implement it. It's just a message
that the device isn't spec compliant, but otherwise perfectly
operational.