The ->pmd member record the pmd entry that maps the user PTE page table page. When the pmd entry changes, ->pmd needs to be updated synchronously. Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx> --- mm/mremap.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/mremap.c b/mm/mremap.c index 088a7a75cb4b..4661cdec79dc 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -278,6 +278,7 @@ static bool move_normal_pmd(struct vm_area_struct *vma, unsigned long old_addr, VM_BUG_ON(!pmd_none(*new_pmd)); pmd_populate(mm, new_pmd, pmd_pgtable(pmd)); + pte_update_pmd(pmd, new_pmd); flush_tlb_range(vma, old_addr, old_addr + PMD_SIZE); if (new_ptl != old_ptl) spin_unlock(new_ptl); -- 2.11.0
