https://bugs.freedesktop.org/show_bug.cgi?id=103736
--- Comment #11 from Ernst Sjöstrand ernstp@gmail.com --- Ok, the vm faults I see are caused by using Padoka ppa which currently has https://cgit.freedesktop.org/mesa/mesa/commit/?id=847d0a393d7f0f967f39302900... but not https://reviews.llvm.org/D41663
That means it can't be the same as the original issue, and also that the solution for me is just to update to more recent versions. Sorry for the noise in this bug.