bisecting fixing commit since 4520f06b03ae667e442da1ab9351fd28cd7ac598 building syzkaller on 36b0b05078430cbedb73c32bed7f78056ce77536 testing commit 4520f06b03ae667e442da1ab9351fd28cd7ac598 with gcc (GCC) 8.1.0 kernel signature: f43de3db7facb0baa19e9f1b3a89def78d1d248cdc77c796c4105b0fe56badad all runs: crashed: KASAN: use-after-free Read in cma_cancel_operation testing current HEAD 56dfe6252c6823c486ce4b1a922d72abc7e3c6b1 testing commit 56dfe6252c6823c486ce4b1a922d72abc7e3c6b1 with gcc (GCC) 8.1.0 kernel signature: c18e6762e92704f97c6e4c1aad16ee69c16300cdc9ab0f075c0accdf6d862471 all runs: boot failed: WARNING in kvm_mmu_set_mmio_spte_mask revisions tested: 2, total time: 39m41.387487638s (build: 17m59.383618125s, test: 20m54.853078663s) bisection is inconclusive, the first good commit could be any of: 4520f06b03ae667e442da1ab9351fd28cd7ac598 56dfe6252c6823c486ce4b1a922d72abc7e3c6b1