Felix Münchhalfen : ntdll: Use pagesize alignment if MEM_REPLACE_PLACEHOLDER is set in flags of NtMapViewOfSection(Ex).

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 2f88259a441208b668429a4ae0b610712783be03
URL:    https://gitlab.winehq.org/wine/wine/-/commit/2f88259a441208b668429a4ae0b6107...

Author: Felix Münchhalfen 
Date:   Wed Jan 10 20:43:34 2024 +0100

ntdll: Use pagesize alignment if MEM_REPLACE_PLACEHOLDER is set in flags of NtMapViewOfSection(Ex).

---

dlls/ntdll/unix/virtual.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dlls/ntdll/unix/virtual.c b/dlls/ntdll/unix/virtual.c
index abe1b4dc4ec..2a53f56879e 100644
--- a/dlls/ntdll/unix/virtual.c
+++ b/dlls/ntdll/unix/virtual.c
@@ -5466,6 +5466,9 @@ NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_p
     }
 #endif

+    if (alloc_type & MEM_REPLACE_PLACEHOLDER)
+        mask = page_mask;
+
     if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
         return STATUS_MAPPED_ALIGNMENT;

@@ -5535,6 +5538,9 @@ NTSTATUS WINAPI NtMapViewOfSectionEx( HANDLE handle, HANDLE process, PVOID *addr
     }
 #endif

+    if (alloc_type & MEM_REPLACE_PLACEHOLDER)
+        mask = page_mask;
+
     if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
         return STATUS_MAPPED_ALIGNMENT;