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-rw-r--r--mm/hugetlb.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 96991de..c4a3558 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2448,8 +2448,11 @@ retry_avoidcopy:
* When the original hugepage is shared one, it does not have
* anon_vma prepared.
*/
- if (unlikely(anon_vma_prepare(vma)))
+ if (unlikely(anon_vma_prepare(vma))) {
+ /* Caller expects lock to be held */
+ spin_lock(&mm->page_table_lock);
return VM_FAULT_OOM;
+ }
copy_user_huge_page(new_page, old_page, address, vma);
__SetPageUptodate(new_page);
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