On Tue, 2018-12-25 at 18:44 +0800, Wenkuan Wang wrote: > For stable tree 3.16.y, as regarding the page set into PAGE_NONE, the PFN will be inverted, > when reference it by pmd_page, it needs to be inverted again controlling by > protnone_mask(pfn). > > https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/mem/thp/thp03.c > > This LTP test case thp03 will get the kernel OOPS like bellow, and > it could be reproduced every time. [...] > After applying these patches: > > thp03 1 TPASS : system didn't crash, pass. [...] Thank you very much for testing and tracking this down. I've queued up these patches for the next update. Ben. -- Ben Hutchings Absolutum obsoletum. (If it works, it's out of date.) - Stafford Beer
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