1 files changed, 4 insertions, 2 deletions

diff --git a/mm/mmap.c b/mm/mmap.c
index 0bb74ca2139d..7f684d5a8087 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -778,10 +778,12 @@ again:			remove_next = 1 + (end > next->vm_end);
                 if (exporter && exporter->anon_vma && !importer->anon_vma) {
                         int error;
 
+                        importer->anon_vma = exporter->anon_vma;
                         error = anon_vma_clone(importer, exporter);
-                        if (error)
+                        if (error) {
+                                importer->anon_vma = NULL;
                                 return error;
-                        importer->anon_vma = exporter->anon_vma;
+                        }
                 }
         }