mm/mmap: Fix memory leak by maple tree

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>

diff --git a/kernel/fork.c b/kernel/fork.c
index 7a7c88dbcec9b9ce5b453481d6b989d9f8c5fd94..476acbf370a854de563f56aa08d85a2711aeee8e 100644 (file)
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -610,6 +610,7 @@ out:
        mmap_write_unlock(mm);
        flush_tlb_mm(oldmm);
        mmap_write_unlock(oldmm);
+       mas_empty_alloc(&mas);
        dup_userfaultfd_complete(&uf);
 fail_uprobe_end:
        uprobe_end_dup_mmap();