We have recently backported the upstream changes to Debian's grub2 package
to support modern SPARC hardware for Debian's sparc64 port.
One of the changes introduced a regression on systems with NVME devices
but not
The of_path_of_nvme function (commit 2391d57, ieee1275: add nvme
support within ofpath) introduced a functional regression:
On systems where of_path is empty, i.e. non-OpenFirmware
machines, grub-probe crashes in of_path_of_nvme when trying
to append the disk name to an empty of_path.
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