The first patch is a fix for x86/entry, I'm quicky runing out of brown paper bags again :/
The rest goes on top of these: https://lkml.kernel.org/r/20200602173103.931412...@infradead.org https://lkml.kernel.org/r/20200602184409.22142-1-el...@google.com patches from myself and Marco that enable *SAN builds. So far GCC-KASAN seen to behave quite well, I've yet to try UBSAN.
