bisecting fixing commit since a844dc4c544291470aa69edbe2434b040794e269 building syzkaller on 0ae38e44894e5a52fe35a56b1d2ad18477cc6b59 testing commit a844dc4c544291470aa69edbe2434b040794e269 with gcc (GCC) 8.1.0 kernel signature: a27560010eb1ce3f330aa78552830d04e2c9a43d3bd474538042b1edf9d00386 all runs: crashed: BUG: unable to handle kernel paging request in insert_char testing current HEAD 56dfe6252c6823c486ce4b1a922d72abc7e3c6b1 testing commit 56dfe6252c6823c486ce4b1a922d72abc7e3c6b1 with gcc (GCC) 8.1.0 kernel signature: f932089566ed45d0b70602ab60dfea081f6bcd4935c8de4db909653c66a9338b all runs: boot failed: WARNING in kvm_mmu_set_mmio_spte_mask revisions tested: 2, total time: 30m47.601031653s (build: 15m58.948452886s, test: 13m55.164578399s) bisection is inconclusive, the first good commit could be any of: a844dc4c544291470aa69edbe2434b040794e269 56dfe6252c6823c486ce4b1a922d72abc7e3c6b1