bisecting fixing commit since ff33472c282e209da54cbc0c7c1c06ddfcc93d33
building syzkaller on de453f342be9edcca7de5a41e153ced8ad7f1a70
testing commit ff33472c282e209da54cbc0c7c1c06ddfcc93d33 with gcc (GCC) 8.1.0
kernel signature: 8545ddedd44938e3a467af8f1d9cf76e6496bf037a1d977f7d292379be13ee83
run #0: crashed: KASAN: use-after-free Write in pppol2tp_connect
run #1: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #2: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #3: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #4: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #5: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #6: crashed: KASAN: use-after-free Read in l2tp_session_create
run #7: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #8: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #9: crashed: WARNING: locking bug in do_ipv6_setsockopt
testing current HEAD 56dfe6252c6823c486ce4b1a922d72abc7e3c6b1
testing commit 56dfe6252c6823c486ce4b1a922d72abc7e3c6b1 with gcc (GCC) 8.1.0
kernel signature: ba3a85a750c1306def9ffb8e494c8b5f139545af7fc6b879b02d03ad548b6731
all runs: boot failed: WARNING in kvm_mmu_set_mmio_spte_mask
revisions tested: 2, total time: 31m51.179187315s (build: 16m51.322758375s, test: 14m4.064494278s)
bisection is inconclusive, the first good commit could be any of:
ff33472c282e209da54cbc0c7c1c06ddfcc93d33
56dfe6252c6823c486ce4b1a922d72abc7e3c6b1