A #Canonical employee reported some out-of-tree code broke after something internal was renamed recently in #Linux 5.15.y – and as expected was told this is no regression at all, as the #LinuxKernel does not have a binary kernel interface, nor does it have a stable kernel interface:
Christoph Hellwig in a reply also wrote: "given that Canonical ignores our #kernel licensing rules and tries to get away with it I'm not going to offer any help to Canonical at all."
