============================================
WARNING: possible recursive locking detected
6.8.0-rc4-syzkaller-g7e90b5c295ec #0 Not tainted
--------------------------------------------
syz-executor.0/6381 is trying to acquire lock:
ffffffff8ea63598 (qp_broker_list.mutex){+.+.}-{3:3}, at: vmci_qp_broker_detach+0xf5/0x1220 drivers/misc/vmw_vmci/vmci_queue_pair.c:2095

but task is already holding lock:
ffffffff8ea63598 (qp_broker_list.mutex){+.+.}-{3:3}, at: vmci_qp_broker_detach+0xf5/0x1220 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.0/6381:
 #0: ffffffff8ea63598 (qp_broker_list.mutex){+.+.}-{3:3}, at: vmci_qp_broker_detach+0xf5/0x1220 drivers/misc/vmw_vmci/vmci_queue_pair.c:2095

stack backtrace:
CPU: 0 PID: 6381 Comm: syz-executor.0 Not tainted 6.8.0-rc4-syzkaller-g7e90b5c295ec #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 check_deadlock kernel/locking/lockdep.c:3062 [inline]
 validate_chain+0x15c0/0x58e0 kernel/locking/lockdep.c:3856
 __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137
 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
 __mutex_lock_common kernel/locking/mutex.c:608 [inline]
 __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752
 vmci_qp_broker_detach+0xf5/0x1220 drivers/misc/vmw_vmci/vmci_queue_pair.c:2095
 ctx_free_ctx drivers/misc/vmw_vmci/vmci_context.c:444 [inline]
 kref_put include/linux/kref.h:65 [inline]
 vmci_ctx_put+0x804/0xe40 drivers/misc/vmw_vmci/vmci_context.c:497
 vmci_context_get_priv_flags+0x5b/0x90 drivers/misc/vmw_vmci/vmci_context.c:1185
 dg_dispatch_as_host drivers/misc/vmw_vmci/vmci_datagram.c:255 [inline]
 vmci_datagram_dispatch+0x46e/0xbe0 drivers/misc/vmw_vmci/vmci_datagram.c:339
 qp_notify_peer drivers/misc/vmw_vmci/vmci_queue_pair.c:1481 [inline]
 vmci_qp_broker_detach+0xb5d/0x1220 drivers/misc/vmw_vmci/vmci_queue_pair.c:2188
 ctx_free_ctx drivers/misc/vmw_vmci/vmci_context.c:444 [inline]
 kref_put include/linux/kref.h:65 [inline]
 vmci_ctx_put+0x804/0xe40 drivers/misc/vmw_vmci/vmci_context.c:497
 vmci_host_close+0x9b/0x160 drivers/misc/vmw_vmci/vmci_host.c:143
 __fput+0x429/0x8a0 fs/file_table.c:376
 task_work_run+0x24e/0x310 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:108 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0x167/0x370 kernel/entry/common.c:212
 do_syscall_64+0x108/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x456c29
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 b4 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa73a77b0d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000124
RAX: 0000000000000003 RBX: 000000000055bf60 RCX: 0000000000456c29
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004
RBP: 00000000004b09d6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004affcd
R13: 000000000000000b R14: 000000000055bf60 R15: 0000000000a8fa68
 </TASK>