Re: [PATCH 6.12.y] mm/ksm: fix exec/fork inheritance support for prctl

@@ -2820,8 +2826,16 @@ void ksm_add_vma(struct vm_area_struct *vma) { struct mm_struct *mm = vma->vm_mm;

• if (test_bit(MMF_VM_MERGE_ANY, &mm->flags))

• if (test_bit(MMF_VM_MERGE_ANY, &mm->flags)) { __ksm_add_vma(vma);

• /*
  

•  * Generally, the flags here always include MMF_VM_MERGEABLE.
  

•  * However, in rare cases, this flag may be cleared by ksmd who
  

•  * scans a cycle without finding any mergeable vma.
  

•  */
  

• if (unlikely(!test_bit(MMF_VM_MERGEABLE, &mm->flags)))
  

• 	__ksm_enter(mm);
  

• }

}

Acked-by: xu xin xu.xin16@zte.com.cn

Thanks!