mm: MADV_COLLAPSE: refetch vm_end after reacquiring mmap_lock

[platform/kernel/linux-starfive.git] / mm / khugepaged.c

diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 0bcba49..dc09cfe 100644 (file)
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -2438,6 +2438,8 @@ int madvise_collapse(struct vm_area_struct *vma, struct vm_area_struct **prev,
                                last_fail = result;
                                goto out_nolock;
                        }
+
+                       hend = vma->vm_end & HPAGE_PMD_MASK;
                }
                mmap_assert_locked(mm);
                memset(cc->node_load, 0, sizeof(cc->node_load));