------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 0 PID: 6878 at kernel/locking/lockdep.c:183 hlock_class kernel/locking/lockdep.c:183 [inline]
WARNING: CPU: 0 PID: 6878 at kernel/locking/lockdep.c:183 hlock_class kernel/locking/lockdep.c:172 [inline]
WARNING: CPU: 0 PID: 6878 at kernel/locking/lockdep.c:183 check_wait_context kernel/locking/lockdep.c:4115 [inline]
WARNING: CPU: 0 PID: 6878 at kernel/locking/lockdep.c:183 __lock_acquire+0x15f1/0x5780 kernel/locking/lockdep.c:4391
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 6878 Comm: syz-executor.5 Not tainted 5.9.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x198/0x1fd lib/dump_stack.c:118
 panic+0x382/0x7fb kernel/panic.c:231
 __warn.cold+0x20/0x4b kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:hlock_class kernel/locking/lockdep.c:183 [inline]
RIP: 0010:hlock_class kernel/locking/lockdep.c:172 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4115 [inline]
RIP: 0010:__lock_acquire+0x15f1/0x5780 kernel/locking/lockdep.c:4391
Code: 08 84 d2 0f 85 c5 39 00 00 8b 0d d2 ea fd 09 85 c9 0f 85 7f fa ff ff 48 c7 c6 c0 da 8b 88 48 c7 c7 80 d5 8b 88 e8 41 cb ea ff <0f> 0b e9 65 fa ff ff c7 44 24 48 fe ff ff ff 41 bf 01 00 00 00 c7
RSP: 0018:ffffc900055e77f0 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff88805eec24c0 RSI: ffffffff815f5985 RDI: fffff52000abcef0
RBP: ffff88805eec24c0 R08: 0000000000000000 R09: ffffffff8a05adc3
R10: 0000000000001989 R11: 0000000000000001 R12: ffff88805eec2e70
R13: 0000000000000fc0 R14: ffff8880936360a0 R15: 0000000000040000
 lock_acquire+0x1f3/0xaf0 kernel/locking/lockdep.c:5029
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:359 [inline]
 lock_sock_nested+0x3b/0x110 net/core/sock.c:3048
 l2cap_sock_teardown_cb+0x88/0x400 net/bluetooth/l2cap_sock.c:1520
 l2cap_chan_del+0xad/0x1300 net/bluetooth/l2cap_core.c:618
 l2cap_conn_del+0x46a/0x9e0 net/bluetooth/l2cap_core.c:1890
 l2cap_disconn_cfm net/bluetooth/l2cap_core.c:8160 [inline]
 l2cap_disconn_cfm+0x85/0xa0 net/bluetooth/l2cap_core.c:8153
 hci_disconn_cfm include/net/bluetooth/hci_core.h:1438 [inline]
 hci_conn_hash_flush+0x114/0x220 net/bluetooth/hci_conn.c:1557
 hci_dev_do_close+0x5c6/0x1080 net/bluetooth/hci_core.c:1770
 hci_unregister_dev+0x1bd/0xe30 net/bluetooth/hci_core.c:3790
 vhci_release+0x70/0xe0 drivers/bluetooth/hci_vhci.c:340
 __fput+0x285/0x920 fs/file_table.c:281
 task_work_run+0xdd/0x190 kernel/task_work.c:141
 exit_task_work include/linux/task_work.h:25 [inline]
 do_exit+0xb7d/0x29f0 kernel/exit.c:806
 do_group_exit+0x125/0x310 kernel/exit.c:903
 __do_sys_exit_group kernel/exit.c:914 [inline]
 __se_sys_exit_group kernel/exit.c:912 [inline]
 __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:912
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e179
Code: Bad RIP value.
RSP: 002b:00007ffc5b25bc98 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001c RCX: 000000000045e179
RDX: 0000000000417841 RSI: 00000000016a9df0 RDI: 0000000000000043
RBP: 00000000004c3a28 R08: 000000000000000c R09: 000000000012ba21
R10: 0000000003269940 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00007ffc5b25bde0 R14: 000000000012b7eb R15: 00007ffc5b25bdf0
Kernel Offset: disabled
Rebooting in 86400 seconds..