It seems it was a generic kernel bug which was fixed between 4.17.6 and 4.17.8.
- Bug#892953: autofs-5.1.2-3 crashes on hppa architecture Helge Deller
- Bug#892953: autofs-5.1.2-3 crashes on hppa architecture Helge Deller
It seems it was a generic kernel bug which was fixed between 4.17.6 and 4.17.8.