From c6853581c5203a52cd8825428e56f2cfcfe4c9f5 Mon Sep 17 00:00:00 2001
From: Timo Kreuzer <timo.kreuzer@reactos.org>
Date: Wed, 26 Feb 2025 10:33:32 +0200
Subject: [PATCH] [NTOS:MM] Fix broken ASSERT

There is no guarantee that all pages in the requested range actually exist.
---
 ntoskrnl/mm/freelist.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ntoskrnl/mm/freelist.c b/ntoskrnl/mm/freelist.c
index 6f2f99bfc3c..0147fb09a90 100644
--- a/ntoskrnl/mm/freelist.c
+++ b/ntoskrnl/mm/freelist.c
@@ -318,7 +318,7 @@ MiAllocatePagesForMdl(IN PHYSICAL_ADDRESS LowAddress,
                 // Get the PFN entry for this page
                 //
                 Pfn1 = MiGetPfnEntry(Page);
-                ASSERT(Pfn1);
+                if (!Pfn1) continue;
 
                 //
                 // Make sure it's free and if this is our first pass, zeroed