Messages in this thread |  | | Date | Tue, 21 Nov 2017 09:45:27 -0600 | From | Chris Friesen <> | Subject | Re: "swap_free: Bad swap file entry" and "BUG: Bad page map in process" but no swap configured |
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I think we tracked it down to the "eptad" kernel option on Broadwell processors. Setting "kvm-intel.eptad=0" turned it off.
Chris
On 11/20/2017 03:07 AM, Huaitong Han wrote: > Hi, Chris > > I have met the same issue too, did you have found out the root cause ? > > Thanks a lot. > > Huaitong Han > > > 2016-10-12 0:02 GMT+08:00 Chris Friesen <chris.friesen@windriver.com>: >> On 10/08/2016 02:05 AM, Hillf Danton wrote: >>> >>> On Friday, October 07, 2016 5:01 AM Chris Friesen >>>> >>>> >>>> I have Linux host running as a kvm hypervisor. It's running CentOS. (So >>>> the >>>> kernel is based on 3.10 but with loads of stuff backported by RedHat.) I >>>> realize this is not a mainline kernel, but I was wondering if anyone is >>>> aware of >>>> similar issues that had been fixed in mainline. >>>> >>> Hey, dunno if you're looking for commit >>> 6dec97dc929 ("mm: move_ptes -- Set soft dirty bit depending on pte >>> type") >>> Hillf >> >> >> CONFIG_MEM_SOFT_DIRTY doesn't exist in our kernel so I don't think this is >> the issue. Thanks for the suggestion though. >> >> Chris
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