IoShutdownRegisteredFileSystems(): Cope with uncalled IoUnregisterFileSystem().

 - at least ntfs.sys-NT5.1sp1 appears to not to unregister itself

diff --git a/ntoskrnl/io/fs.c b/ntoskrnl/io/fs.c
index fa340d8..a241167 100644 (file)
--- a/ntoskrnl/io/fs.c
+++ b/ntoskrnl/io/fs.c
@@ -199,7 +199,15 @@ IoShutdownRegisteredFileSystems(VOID)
      {
        current = CONTAINING_RECORD(current_entry,FILE_SYSTEM_OBJECT,Entry);
        if (current==current_last)
-           KeBugCheck(0);      /* filesystem forgot to call IoUnregisterFileSystem() */
+         {
+           /* At least ntfs.sys-NT5.1sp1 appears to not to unregister itself.
+            * It does not import symbol IoUnregisterFileSystem() at all!
+            * BTW also ext2fsd.sys<=v0.10A also forgets to call IoUnregisterFileSystem().
+            */
+           DPRINT("IoShutdownRegisteredFileSystems(): WARNING: filesystem forgot to call IoUnregisterFileSystem() !!!\n");
+           IoUnregisterFileSystem(current->DeviceObject);
+           continue;
+         }
        current_last=current;
 
        /* send IRP_MJ_SHUTDOWN */