> Have you ever run xfstests against v6 version ? Yes. > The page allocation failure problem in my test happen below. > What is your test result? There is no the page allocation failure problem in my test. I skipped the 6 test cases, except for these 6 test cases, all other test cases passed. - generic/251 - generic/455 - generic/482 - generic/604 - generic/633 - generic/730 What are the chances of this problem happening? every time when running generic/476?