Can you post the output of ls -lh /boot?
Afterwards try if running sudo chmod 0644 /boot/vmlinuz* fixes the problem.
Note that I cannot reproduce the problem with the same distribution. So maybe you really need run libguestfs-test-tool.
Can you post the output of ls -lh /boot?
Afterwards try if running sudo chmod 0644 /boot/vmlinuz* fixes the problem.
Note that I cannot reproduce the problem with the same distribution. So maybe you really need run libguestfs-test-tool.