bisecting fixing commit since 5631c5e0eb9035d92ceb20fcd9cdb7779a3f5cc7
building syzkaller on ff51e5229e0ee846d2fd687cb0dbca13de758c66
testing commit 5631c5e0eb9035d92ceb20fcd9cdb7779a3f5cc7
compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: e1249255fc5a2ca2b42bc79c6dfd310a8a27a119130b62ed30c3c571e2fbbbfd
run #0: crashed: KASAN: use-after-free Write in hci_conn_del
run #1: crashed: KASAN: use-after-free Write in hci_conn_del
run #2: crashed: KASAN: use-after-free Read in sco_chan_del
run #3: crashed: KASAN: use-after-free Write in hci_conn_del
run #4: crashed: KASAN: slab-out-of-bounds Write in hci_conn_del
run #5: crashed: KASAN: use-after-free Write in hci_conn_del
run #6: crashed: KASAN: slab-out-of-bounds Write in hci_conn_del
run #7: crashed: KASAN: use-after-free Write in hci_conn_del
run #8: crashed: KASAN: use-after-free Write in hci_conn_del
run #9: crashed: KASAN: use-after-free Write in hci_conn_del
run #10: crashed: WARNING: ODEBUG bug in hci_conn_del
run #11: crashed: KASAN: slab-out-of-bounds Write in hci_conn_del
run #12: crashed: KASAN: use-after-free Write in hci_conn_del
run #13: crashed: WARNING: ODEBUG bug in hci_conn_del
run #14: crashed: KASAN: slab-out-of-bounds Write in hci_conn_del
run #15: crashed: KASAN: use-after-free Read in sco_chan_del
run #16: crashed: WARNING: ODEBUG bug in hci_conn_del
run #17: crashed: KASAN: use-after-free Write in hci_conn_del
run #18: OK
run #19: OK
testing current HEAD 2f111a6fd5b5297b4e92f53798ca086f7c7d33a4
testing commit 2f111a6fd5b5297b4e92f53798ca086f7c7d33a4
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 16e863f5706e913bf6073343506f874638112e947411372d32f237553fadf6ba
all runs: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request.  '(resource type:compute)'. ForceSendFields:[] NullFields:[]}.
revisions tested: 2, total time: 23m27.89786046s (build: 11m38.855866931s, test: 11m4.461372179s)
bisection is inconclusive, the first good commit could be any of:
5631c5e0eb9035d92ceb20fcd9cdb7779a3f5cc7
2f111a6fd5b5297b4e92f53798ca086f7c7d33a4