bisecting fixing commit since 835d31d319d9c8c4eb6cac074643360ba0ecab10
building syzkaller on 7eb7e15259fddd67759f90feb2b016da878f76c7
testing commit 835d31d319d9c8c4eb6cac074643360ba0ecab10
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 627162486a8e658eb356645ce26136fe9d44875c95b4ed85ce495cfe9a581ccf
run #0: crashed: WARNING in hci_conn_timeout
run #1: crashed: WARNING in corrupted
run #2: crashed: WARNING in hci_conn_timeout
run #3: crashed: WARNING in hci_conn_timeout
run #4: crashed: WARNING in corrupted
run #5: crashed: WARNING in corrupted
run #6: crashed: WARNING in hci_conn_timeout
run #7: crashed: WARNING in hci_conn_timeout
run #8: crashed: WARNING in hci_conn_timeout
run #9: crashed: WARNING in hci_conn_timeout
run #10: crashed: WARNING in corrupted
run #11: crashed: WARNING in hci_conn_timeout
run #12: crashed: WARNING in hci_conn_timeout
run #13: crashed: WARNING in hci_conn_timeout
run #14: crashed: WARNING in corrupted
run #15: crashed: WARNING in hci_conn_timeout
run #16: crashed: WARNING in corrupted
run #17: crashed: WARNING in corrupted
run #18: crashed: WARNING in hci_conn_timeout
run #19: crashed: WARNING in hci_conn_timeout
testing current HEAD 2a987e65025e2b79c6d453b78cb5985ac6e5eb26
testing commit 2a987e65025e2b79c6d453b78cb5985ac6e5eb26
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 529cd02c70a57ebb6445cf9e8c3af6a354fe285779e74bc92aea6e51f47b39ec
run #0: crashed: WARNING in hci_conn_timeout
run #1: crashed: WARNING in corrupted
run #2: crashed: WARNING in corrupted
run #3: crashed: WARNING in corrupted
run #4: crashed: WARNING in hci_conn_timeout
run #5: crashed: WARNING in hci_conn_timeout
run #6: crashed: WARNING in hci_conn_timeout
run #7: crashed: WARNING in corrupted
run #8: crashed: WARNING in hci_conn_timeout
run #9: crashed: WARNING in hci_conn_timeout
revisions tested: 2, total time: 23m8.077176368s (build: 12m35.47552887s, test: 9m58.420318275s)
the crash still happens on HEAD
commit msg: Merge tag 'perf-tools-fixes-for-v5.16-2021-12-07' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
crash: WARNING in hci_conn_timeout
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3939 at net/bluetooth/hci_conn.c:573 hci_conn_timeout+0x19a/0x3d0 net/bluetooth/hci_conn.c:573
Modules linked in:

CPU: 0 PID: 3939 Comm: kworker/u5:6 Not tainted 5.16.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci3 hci_conn_timeout

RIP: 0010:hci_conn_timeout+0x19a/0x3d0 net/bluetooth/hci_conn.c:573