------------[ cut here ]------------
WARNING: CPU: 1 PID: 8035 at net/bluetooth/hci_conn.c:404 hci_conn_timeout+0x1ef/0x3f0 net/bluetooth/hci_conn.c:404
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 8035 Comm: kworker/u5:7 Not tainted 4.14.212-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci0 hci_conn_timeout
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x4b kernel/panic.c:547
 report_bug+0x208/0x249 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:hci_conn_timeout+0x1ef/0x3f0 net/bluetooth/hci_conn.c:404
RSP: 0018:ffff88805475fd30 EFLAGS: 00010297
RAX: ffff88809263a1c0 RBX: ffff888092cd0ea0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff888092cd0d90
RBP: ffff888092cd0ea0 R08: ffffffff8ba8e84c R09: 0000000000003d4a
R10: 0000000000000001 R11: ffff88809263a1c0 R12: ffff888092cd0d80
R13: 00000000fffffffe R14: ffff8880b2973140 R15: ffff8880b2b5e000
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
FAT-fs (loop1): bogus number of reserved sectors
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Kernel Offset: disabled
Rebooting in 86400 seconds..