https://bugzilla.kernel.org/show_bug.cgi?id=201631 --- Comment #19 from Jan Kara (jack@xxxxxxx) --- Hum, interesting. The page we barfed on is: Clean page (index 92, ino 1163533, flags 3ffe0000002016) with dirty PTE (pte_val c0000001ef7b3186) on unmap! Page flags thus decode to: PG_referenced | PG_uptodate | PG_lru | PG_private PTE bits decode to: _PAGE_WRITE | _PAGE_READ | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_PTE | _PAGE_PRESENT So indeed the page was writeably mapped. The question now is, how the page could have been writeably mapped without getting marked dirty or how could the dirty bit get cleared while the page stayed writeably mapped. I'll poke more into the code and probably come up with further debugging patch. -- You are receiving this mail because: You are watching the assignee of the bug.
