From f5ce7cc12424908c8872cbd5b9a0df80fa96a4d5 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Thu, 3 Dec 2020 21:52:42 +0000
Subject: __ntapi_ipc_disconnect_unmap_section_by_port(): obtain lock via loop
 as needed.

---
 src/ipc/ntapi_ipc_connect.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

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(
-- 
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