bisecting fixing commit since 01364dad1d4577e27a57729d41053f661bb8a5b9 building syzkaller on e8e6c7d21dbd86f502f66737883b1a0c3ae8eeb1 testing commit 01364dad1d4577e27a57729d41053f661bb8a5b9 with gcc (GCC) 8.1.0 kernel signature: a8ab00a2cece4e988c9c63662d2911e9d448c8eff5ff56f22129777a18f11ca1 all runs: crashed: kernel BUG at drivers/dma-buf/dma-buf.c:LINE! testing current HEAD 4139fb08c05fec734f85a99e8b7d99dc12b1b68c testing commit 4139fb08c05fec734f85a99e8b7d99dc12b1b68c with gcc (GCC) 8.1.0 kernel signature: 84d1bd98882b29c480356736dd79a09f4aa20340339389408d5d82b824982e7b all runs: boot failed: WARNING in kvm_mmu_set_mmio_spte_mask revisions tested: 2, total time: 30m34.85503853s (build: 16m20.953362687s, test: 13m46.694332608s) bisection is inconclusive, the first good commit could be any of: 01364dad1d4577e27a57729d41053f661bb8a5b9 4139fb08c05fec734f85a99e8b7d99dc12b1b68c