From da8524f795dd4db68540b80d3c7e5a10132da79f Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Dec 04 2020 13:24:15 +0000
Subject: __ipc_connect_by_attr(): obtain atomic lock via loop as needed.


---

diff --git a/src/ipc/ntapi_ipc_connect.c b/src/ipc/ntapi_ipc_connect.c
index 2d0e4b7..8f0d8e1 100644
--- a/src/ipc/ntapi_ipc_connect.c
+++ b/src/ipc/ntapi_ipc_connect.c
@@ -311,8 +311,10 @@ static int32_t __ipc_connect_by_attr(
 	/* lock */
 	hlock = &(__internals->hlock);
 
-	if (at_locked_cas(hlock,0,1))
-		return NT_STATUS_RESOURCE_NOT_OWNED;
+        while (at_locked_cas(hlock,0,1))
+		__ntapi->zw_delay_execution(
+			NT_SYNC_NON_ALERTABLE,
+			&(nt_timeout){{0,0}});
 
 	/* already connected? */
 	node = (struct dalist_node_ex *)__internals->ipc_conns.head;