ntdll: Take the zero_bits parameter into account in NtCreateThreadEx().

dlls/ntdll/unix/loader.c

@@ -1871,7 +1871,7 @@ static void start_main_thread(void)
     if (p___wine_main_argv) *p___wine_main_argv = main_argv;
     if (p___wine_main_wargv) *p___wine_main_wargv = main_wargv;
     set_load_order_app_name( main_wargv[0] );
-    virtual_alloc_thread_stack( &stack, 0, 0, NULL );
+    virtual_alloc_thread_stack( &stack, is_win64 ? 0x7fffffff : 0, 0, 0, NULL );
     teb->Tib.StackBase = stack.StackBase;
     teb->Tib.StackLimit = stack.StackLimit;
     teb->DeallocationStack = stack.DeallocationStack;

dlls/ntdll/unix/thread.c

@@ -178,6 +178,9 @@ NTSTATUS WINAPI NtCreateThreadEx( HANDLE *handle, ACCESS_MASK access, OBJECT_ATT
     INITIAL_TEB stack;
     NTSTATUS status;
 
+    if (zero_bits > 21 && zero_bits < 32) return STATUS_INVALID_PARAMETER_3;
+    if (!is_win64 && !is_wow64 && zero_bits >= 32) return STATUS_INVALID_PARAMETER_3;
+
     if (process != NtCurrentProcess())
     {
         apc_call_t call;
@@ -244,7 +247,7 @@ NTSTATUS WINAPI NtCreateThreadEx( HANDLE *handle, ACCESS_MASK access, OBJECT_ATT
 
     if ((status = virtual_alloc_teb( &teb ))) goto done;
 
-    if ((status = virtual_alloc_thread_stack( &stack, stack_reserve, stack_commit, &extra_stack )))
+    if ((status = virtual_alloc_thread_stack( &stack, zero_bits, stack_reserve, stack_commit, &extra_stack )))
     {
         virtual_free_teb( teb );
         goto done;

dlls/ntdll/unix/unix_private.h

@@ -197,8 +197,8 @@ extern TEB *virtual_alloc_first_teb(void) DECLSPEC_HIDDEN;
 extern NTSTATUS virtual_alloc_teb( TEB **ret_teb ) DECLSPEC_HIDDEN;
 extern void virtual_free_teb( TEB *teb ) DECLSPEC_HIDDEN;
 extern NTSTATUS virtual_clear_tls_index( ULONG index ) DECLSPEC_HIDDEN;
-extern NTSTATUS virtual_alloc_thread_stack( INITIAL_TEB *stack, SIZE_T reserve_size, SIZE_T commit_size,
-                                            SIZE_T *pthread_size ) DECLSPEC_HIDDEN;
+extern NTSTATUS virtual_alloc_thread_stack( INITIAL_TEB *stack, ULONG_PTR zero_bits, SIZE_T reserve_size,
+                                            SIZE_T commit_size, SIZE_T *pthread_size ) DECLSPEC_HIDDEN;
 extern void virtual_map_user_shared_data(void) DECLSPEC_HIDDEN;
 extern NTSTATUS virtual_handle_fault( void *addr, DWORD err, void *stack ) DECLSPEC_HIDDEN;
 extern unsigned int virtual_locked_server_call( void *req_ptr ) DECLSPEC_HIDDEN;

dlls/ntdll/unix/virtual.c

@@ -3044,9 +3044,10 @@ NTSTATUS virtual_clear_tls_index( ULONG index )
 /***********************************************************************
  *           virtual_alloc_thread_stack
  */
-NTSTATUS virtual_alloc_thread_stack( INITIAL_TEB *stack, SIZE_T reserve_size, SIZE_T commit_size,
-                                     SIZE_T *pthread_size )
+NTSTATUS virtual_alloc_thread_stack( INITIAL_TEB *stack, ULONG_PTR zero_bits, SIZE_T reserve_size,
+                                     SIZE_T commit_size, SIZE_T *pthread_size )
 {
+    unsigned short zero_bits_64 = zero_bits_win_to_64( zero_bits );
     struct file_view *view;
     NTSTATUS status;
     sigset_t sigset;
@@ -3063,7 +3064,7 @@ NTSTATUS virtual_alloc_thread_stack( INITIAL_TEB *stack, SIZE_T reserve_size, SI
     server_enter_uninterrupted_section( &virtual_mutex, &sigset );
 
     if ((status = map_view( &view, NULL, size + extra_size, FALSE,
-                            VPROT_READ | VPROT_WRITE | VPROT_COMMITTED, 33 )) != STATUS_SUCCESS)
+                            VPROT_READ | VPROT_WRITE | VPROT_COMMITTED, zero_bits_64 )) != STATUS_SUCCESS)
         goto done;
 
 #ifdef VALGRIND_STACK_REGISTER