[PATCH v2 09/22] ntdll: Downgrade loader lock to shared when calling TLS callbacks.

[Paul Gofman]

Signed-off-by: Paul Gofman 
---
 dlls/ntdll/loader.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/ntdll/loader.c b/dlls/ntdll/loader.c
index c4fdfdf414b..bac249bd3d9 100644
--- a/dlls/ntdll/loader.c
+++ b/dlls/ntdll/loader.c
@@ -1590,6 +1590,7 @@ static void call_tls_callbacks( HMODULE module, UINT reason )
     dir = RtlImageDirectoryEntryToData( module, TRUE, IMAGE_DIRECTORY_ENTRY_TLS, &dirsize );
     if (!dir || !dir->AddressOfCallBacks) return;

+    lock_loader_downgrade_exclusive();
     RtlEnterCriticalSection( &loader_section );

for (callback = (const PIMAGE_TLS_CALLBACK *)dir->AddressOfCallBacks; *callback; callback++)
@@ -1612,6 +1613,7 @@ static void call_tls_callbacks( HMODULE module, UINT reason )
     }

RtlLeaveCriticalSection( &loader_section );
+    lock_loader_restore_exclusive();
 }

/*************************************************************************