Dear all, I was looking at the ./mm/rmap.c .. I found that, in function "page_referenced_one()", struct mm_struct *mm = vma->vm_mm; was being refererred without NULL check.
Though I do agree that this works for most of the cases, I thought it is better to add BUG_ON() for case of mm being NULL. attached is the patch for this thank you in advance for taking your time. best regards, -- (Kenichi Okuyama) URL: http://www.dd.iij4u.or.jp/~okuyamak/
patch.mm
Description: Binary data
