bisecting fixing commit since e132c8d7b58d8dc2c1888f5768454550d1f3ea7b
building syzkaller on b5268b89c2964733654c89f8322fb155d9fa6799
testing commit e132c8d7b58d8dc2c1888f5768454550d1f3ea7b with gcc (GCC) 8.1.0
kernel signature: 732082f8bfd8605ab162a28e1fc571290c50bb084b3ef708d19bc6d36192db3b
run #0: crashed: KASAN: use-after-free Read in pppol2tp_session_close
run #1: crashed: KASAN: use-after-free Read in pppol2tp_session_close
run #2: crashed: KASAN: use-after-free Write in pppol2tp_connect
run #3: crashed: KASAN: use-after-free Read in pppol2tp_session_close
run #4: crashed: KASAN: use-after-free Read in lock_sock_nested
run #5: crashed: KASAN: use-after-free Read in pppol2tp_session_close
run #6: crashed: KASAN: use-after-free Read in l2tp_session_create
run #7: crashed: KASAN: use-after-free Read in l2tp_session_create
run #8: crashed: KASAN: use-after-free Read in pppol2tp_session_close
run #9: crashed: KASAN: use-after-free Read in lock_sock_nested
testing current HEAD 56dfe6252c6823c486ce4b1a922d72abc7e3c6b1
testing commit 56dfe6252c6823c486ce4b1a922d72abc7e3c6b1 with gcc (GCC) 8.1.0
kernel signature: f7728cd7075147d5aeef16e713f034ba5b03ca9b9208c0062632c111daa8dbcd
all runs: boot failed: WARNING in kvm_mmu_set_mmio_spte_mask
revisions tested: 2, total time: 32m36.264699311s (build: 17m39.533818584s, test: 13m54.911490972s)
bisection is inconclusive, the first good commit could be any of:
e132c8d7b58d8dc2c1888f5768454550d1f3ea7b
56dfe6252c6823c486ce4b1a922d72abc7e3c6b1