============================================
WARNING: possible recursive locking detected
6.12.0-rc2-syzkaller-00320-gba01565ced22 #0 Not tainted
--------------------------------------------
syz.3.1958/17374 is trying to acquire lock:
ffff88805d2e4078 (&hdev->lock){+.+.}-{3:3}, at: mgmt_set_connectable_complete+0x143/0x330 net/bluetooth/mgmt.c:1690

but task is already holding lock:
ffff88805d2e4078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x346/0x1110 net/bluetooth/hci_sync.c:5183

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&hdev->lock);
  lock(&hdev->lock);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

3 locks held by syz.3.1958/17374:
 #0: ffff88805d2e4d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x26/0x90 net/bluetooth/hci_core.c:481
 #1: ffff88805d2e4078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x346/0x1110 net/bluetooth/hci_sync.c:5183
 #2: ffff88805d2e4690 (&hdev->cmd_sync_work_lock){+.+.}-{3:3}, at: hci_cmd_sync_dequeue+0x50/0x1f0 net/bluetooth/hci_sync.c:883

stack backtrace:
CPU: 0 UID: 0 PID: 17374 Comm: syz.3.1958 Not tainted 6.12.0-rc2-syzkaller-00320-gba01565ced22 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_deadlock_bug+0x2e3/0x410 kernel/locking/lockdep.c:3037
 check_deadlock kernel/locking/lockdep.c:3089 [inline]
 validate_chain kernel/locking/lockdep.c:3891 [inline]
 __lock_acquire+0x2185/0x3ce0 kernel/locking/lockdep.c:5202
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825
 __mutex_lock_common kernel/locking/mutex.c:608 [inline]
 __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752
 mgmt_set_connectable_complete+0x143/0x330 net/bluetooth/mgmt.c:1690
 _hci_cmd_sync_cancel_entry.constprop.0+0x6c/0x1d0 net/bluetooth/hci_sync.c:641
 hci_cmd_sync_dequeue+0x178/0x1f0 net/bluetooth/hci_sync.c:886
 cmd_complete_rsp+0x46/0x1e0 net/bluetooth/mgmt.c:1461
 mgmt_pending_foreach+0xdf/0x140 net/bluetooth/mgmt_util.c:259
 __mgmt_power_off+0x12a/0x2c0 net/bluetooth/mgmt.c:9474
 hci_dev_close_sync+0xc33/0x1110 net/bluetooth/hci_sync.c:5191
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483
 hci_dev_close+0x183/0x1e0 net/bluetooth/hci_core.c:508
 hci_sock_ioctl+0x28c/0x880 net/bluetooth/hci_sock.c:1128
 sock_do_ioctl+0x116/0x280 net/socket.c:1227
 sock_ioctl+0x228/0x6c0 net/socket.c:1346
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __x64_sys_ioctl+0x18f/0x220 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe84c57dff9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe84d312038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe84c736130 RCX: 00007fe84c57dff9
RDX: 0000000000000000 RSI: 00000000400448ca RDI: 000000000000000a
RBP: 00007fe84c5f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe84c736130 R15: 00007ffeec3e29a8
 </TASK>