It will either crash qemu or the VM will boot and garbage will be read
from the SMBIOS11 table.

```
git clone https://github.com/systemd/mkosi
cd mkosi
mkdir tmp
cd tmp
../bin/mkosi --tools-tree= —include=mkosi-vm -f vm
```

The above instructions should either crash qemu or boot a VM with
garbage data in the smbios tables. If the VM boots, you can run
`journalctl -g 'Failed to base64 decode credential'` to check for
garbage data in the smbios11 table. If there are any such messages, we
know the bug is not fixed, if there are none, we know the bug is fixed.

-- 
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2127974

Title:
  -smbios type=11,path=xxx results in buffer overrun due to missing null
  terminator

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