nvme dma returns EFBIG (27)

[Jesper Schmitz Mouridsen]

Hi

I can dd blocks from /dev/nda0p0 but I cannot run newfs.

It prints nvme0: nvme_payload_map: err  27.  and ctrl+t shows it is 
stuck in physwri

https://github.com/freebsd/freebsd-src/blob/a6dc68c0e0f8a24ffaf0b4e78e58141ef7897047/sys/dev/nvme/nvme_qpair.c#L1003

https://github.com/freebsd/freebsd-src/blob/c6c70c074633569447be4bfd2b694a1c294015bd/sys/dev/nvme/nvme_qpair.c#L567

I could format as ext4 under Linux.

Any hints or pointers are welcome.

Thanks

Jesper