BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 8548 Comm: kworker/u5:1 Not tainted 5.6.0-rc3-next-20200228-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci2192 hci_power_on
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 add_chain_cache kernel/locking/lockdep.c:3048 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3147 [inline]
 validate_chain kernel/locking/lockdep.c:3168 [inline]
 __lock_acquire.cold+0x11/0x2c1 kernel/locking/lockdep.c:4190
 lock_acquire+0x197/0x420 kernel/locking/lockdep.c:4720
 seqcount_lockdep_reader_access include/linux/seqlock.h:97 [inline]
 read_seqcount_begin include/linux/seqlock.h:182 [inline]
 ktime_get_with_offset+0xfd/0x360 kernel/time/timekeeping.c:800
 ktime_get_real include/linux/timekeeping.h:79 [inline]
 __net_timestamp include/linux/skbuff.h:3737 [inline]
 hci_si_event net/bluetooth/hci_sock.c:728 [inline]
 hci_sock_dev_event+0x2d6/0x590 net/bluetooth/hci_sock.c:757
 hci_dev_do_open+0x6b9/0x18b0 net/bluetooth/hci_core.c:1548
 hci_power_on+0x11d/0x610 net/bluetooth/hci_core.c:2193
 process_one_work+0x94b/0x1690 kernel/workqueue.c:2266
 worker_thread+0x96/0xe20 kernel/workqueue.c:2412
 kthread+0x357/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352