From f5ce7cc12424908c8872cbd5b9a0df80fa96a4d5 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Dec 04 2020 13:24:15 +0000
Subject: __ntapi_ipc_disconnect_unmap_section_by_port(): obtain lock via loop as needed.


---

diff --git a/src/ipc/ntapi_ipc_connect.c b/src/ipc/ntapi_ipc_connect.c
index 8a00ca0..16f725e 100644
--- a/src/ipc/ntapi_ipc_connect.c
+++ b/src/ipc/ntapi_ipc_connect.c
@@ -734,8 +734,10 @@ int32_t __stdcall __ntapi_ipc_disconnect_unmap_section_by_port(
 	__internals = __ntapi_internals();
 
 	/* lock */
-	if (at_locked_cas(&__internals->hlock,0,1))
-		return NT_STATUS_RESOURCE_NOT_OWNED;
+        while (at_locked_cas(&__internals->hlock,0,1))
+		__ntapi->zw_delay_execution(
+			NT_SYNC_NON_ALERTABLE,
+			&(nt_timeout){{0,0}});
 
 	/* connection node */
 	if ((status = dalist_get_node_by_key(