============================================
WARNING: possible recursive locking detected
6.11.0-rc4-syzkaller-00255-gd2bafcf224f3 #0 Not tainted
--------------------------------------------
syz-executor.3/18037 is trying to acquire lock:
ffffffff8ec24e78 (qp_broker_list.mutex){+.+.}-{3:3}, at: vmci_qp_broker_detach+0x14d/0x1370 drivers/misc/vmw_vmci/vmci_queue_pair.c:2095

but task is already holding lock:
ffffffff8ec24e78 (qp_broker_list.mutex){+.+.}-{3:3}, at: vmci_qp_broker_detach+0x14d/0x1370 drivers/misc/vmw_vmci/vmci_queue_pair.c:2095

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

       CPU0
       ----
  lock(qp_broker_list.mutex);
  lock(qp_broker_list.mutex);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

1 lock held by syz-executor.3/18037:
 #0: ffffffff8ec24e78 (qp_broker_list.mutex){+.+.}-{3:3}, at: vmci_qp_broker_detach+0x14d/0x1370 drivers/misc/vmw_vmci/vmci_queue_pair.c:2095

stack backtrace:
CPU: 1 UID: 0 PID: 18037 Comm: syz-executor.3 Not tainted 6.11.0-rc4-syzkaller-00255-gd2bafcf224f3 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
 check_deadlock kernel/locking/lockdep.c:3061 [inline]
 validate_chain kernel/locking/lockdep.c:3855 [inline]
 __lock_acquire+0x2167/0x3cb0 kernel/locking/lockdep.c:5142
 lock_acquire kernel/locking/lockdep.c:5759 [inline]
 lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724
 __mutex_lock_common kernel/locking/mutex.c:608 [inline]
 __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752
 vmci_qp_broker_detach+0x14d/0x1370 drivers/misc/vmw_vmci/vmci_queue_pair.c:2095
 ctx_free_ctx+0x4f2/0xdf0 drivers/misc/vmw_vmci/vmci_context.c:444
 kref_put include/linux/kref.h:65 [inline]
 vmci_ctx_put drivers/misc/vmw_vmci/vmci_context.c:497 [inline]
 vmci_ctx_enqueue_datagram+0x4bc/0x650 drivers/misc/vmw_vmci/vmci_context.c:360
 dg_dispatch_as_host drivers/misc/vmw_vmci/vmci_datagram.c:276 [inline]
 vmci_datagram_dispatch+0x430/0xd30 drivers/misc/vmw_vmci/vmci_datagram.c:340
 qp_notify_peer+0x19e/0x260 drivers/misc/vmw_vmci/vmci_queue_pair.c:1481
 vmci_qp_broker_detach+0x5ff/0x1370 drivers/misc/vmw_vmci/vmci_queue_pair.c:2188
 ctx_free_ctx+0x4f2/0xdf0 drivers/misc/vmw_vmci/vmci_context.c:444
 kref_put include/linux/kref.h:65 [inline]
 vmci_ctx_put drivers/misc/vmw_vmci/vmci_context.c:497 [inline]
 vmci_ctx_destroy+0x15b/0x1d0 drivers/misc/vmw_vmci/vmci_context.c:195
 vmci_host_close+0x11e/0x1b0 drivers/misc/vmw_vmci/vmci_host.c:143
 __fput+0x408/0xbb0 fs/file_table.c:422
 __fput_sync+0x47/0x50 fs/file_table.c:507
 __do_sys_close fs/open.c:1566 [inline]
 __se_sys_close fs/open.c:1551 [inline]
 __x64_sys_close+0x86/0x100 fs/open.c:1551
 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: 0033:0x7f087de7b9da
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24
RSP: 002b:00007ffed708b730 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f087de7b9da
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000032 R08: 0000001b32160000 R09: 00007f087df9bf8c
R10: 00007ffed708b880 R11: 0000000000000293 R12: 00007f087da00478
R13: ffffffffffffffff R14: 00007f087da00000 R15: 000000000002d319
 </TASK>