On 30/11/2017 10:33, Fabian Grünbichler wrote: > > It was reverted in 785373b4c38719f4af6775845df6be1dfaea120f after which > the symptoms disappeared until this series was merged, which contains > > 369ea8242c0fb5239b4ddf0dc568f694bd244de4 mm/rmap: update to new mmu_notifier semantic v2 > > We haven't bisected the individual commits of the series yet, but the > commit immediately preceding its merge exhibits no problems, while > everything after does. It is not known whether the bug is actually in > the series itself, or whether increasing the likelihood of triggering it > is just a side-effect. There is a similar report[2] concerning an > upgrade from 4.12.12 to 4.12.13, which does not contain this series in > any form AFAICT but might be worth another look as well. I know of one issue in this series (invalidate_page was removed from KVM without reimplementing it as invalidate_range). I'll try to prioritize the fix, but I don't think I can do it before Monday. Thanks, Paolo
