1 files changed, 3 insertions, 0 deletions
diff --git a/source3/tdb/tdb.c b/source3/tdb/tdb.c
index 474d0c7adb3..944a734ddc3 100644
--- a/source3/tdb/tdb.c
+++ b/source3/tdb/tdb.c
@@ -85,6 +85,9 @@ static void *tdb_mmap(tdb_len size, int readonly, int fd)
 #ifdef HAVE_MMAP
 	ret = mmap(NULL, size, PROT_READ | (readonly ? 0 : PROT_WRITE), MAP_SHARED|MAP_FILE, fd, 0);
 #endif
+        if (ret == (void *)-1)
+                ret = NULL;
+
 	return ret;
 }