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Subject5.0-rc1 KVM inspired "BUG: Bad page state in process" spew
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Greetings,

KVM seems to be busted in master ATM. All I have to do to have host
start screaming and maybe exploding (if the guest doesn't do so first)
is to try to install a (obese in this case) kernel over nfs mount of
the host in a guest.

Kernel producing the spew below is 3bd6e94, config attached.

homer: # grep BUG: /netconsole.log
[ 1531.909703] BUG: Bad page state in process X pfn:100491
[ 1531.958141] BUG: Bad page state in process systemd-journal pfn:100412
[ 1532.662359] BUG: Bad page state in process X pfn:10043f
[ 1532.664033] BUG: Bad page state in process X pfn:10044d
[ 1532.686433] BUG: Bad page state in process systemd-journal pfn:1027b0
[ 1532.687704] BUG: Bad page state in process systemd-journal pfn:1027ba
[ 1532.689039] BUG: Bad page state in process systemd-journal pfn:1027de
[ 1532.694762] BUG: Bad page state in process systemd-journal pfn:102602
[ 1532.696337] BUG: Bad page state in process systemd-journal pfn:102726
[ 1533.086254] BUG: Bad page state in process CPU 0/KVM pfn:100a48
[ 1533.086869] BUG: Bad page state in process CPU 0/KVM pfn:100a49
[ 1533.087413] BUG: Bad page state in process CPU 0/KVM pfn:100a4a
[ 1533.087947] BUG: Bad page state in process CPU 0/KVM pfn:100a4b
[ 1533.088477] BUG: Bad page state in process CPU 0/KVM pfn:100a4c
[ 1533.089044] BUG: Bad page state in process CPU 0/KVM pfn:100a4d
[ 1533.089586] BUG: Bad page state in process CPU 0/KVM pfn:100a4e
[ 1533.090121] BUG: Bad page state in process CPU 0/KVM pfn:100a61
[ 1533.090657] BUG: Bad page state in process CPU 0/KVM pfn:100a62
[ 1533.091191] BUG: Bad page state in process CPU 0/KVM pfn:100a63
[ 1533.091739] BUG: Bad page state in process CPU 0/KVM pfn:100a64
[ 1533.092276] BUG: Bad page state in process CPU 0/KVM pfn:100a65
[ 1533.092814] BUG: Bad page state in process CPU 0/KVM pfn:100a66
[ 1533.093348] BUG: Bad page state in process CPU 0/KVM pfn:100a67
[ 1533.093940] BUG: Bad page state in process CPU 0/KVM pfn:1017e8
[ 1533.094512] BUG: Bad page state in process CPU 0/KVM pfn:1017e9
[ 1533.095049] BUG: Bad page state in process CPU 0/KVM pfn:1017ea
[ 1533.095585] BUG: Bad page state in process CPU 0/KVM pfn:1017eb
[ 1533.096120] BUG: Bad page state in process CPU 0/KVM pfn:1017ee
[ 1533.096679] BUG: Bad page state in process CPU 0/KVM pfn:101a20
[ 1533.097221] BUG: Bad page state in process CPU 0/KVM pfn:101a22
[ 1533.097757] BUG: Bad page state in process systemd-journal pfn:101ce4
[ 1533.098162] BUG: Bad page state in process systemd-journal pfn:101ce5
[ 1533.098535] BUG: Bad page state in process CPU 0/KVM pfn:101ce6
[ 1533.099075] BUG: Bad page state in process CPU 0/KVM pfn:101ce7
[ 1533.099667] BUG: Bad page state in process CPU 0/KVM pfn:1024cc
[ 1533.101840] BUG: Bad page state in process CPU 0/KVM pfn:1024e9
[ 1533.102379] BUG: Bad page state in process CPU 0/KVM pfn:1024ea
[ 1533.102935] BUG: Bad page state in process CPU 0/KVM pfn:1024eb
[ 1533.103516] BUG: Bad page state in process CPU 0/KVM pfn:102bc8
[ 1533.105771] BUG: Bad page state in process CPU 0/KVM pfn:102be0
[ 1533.106308] BUG: Bad page state in process CPU 0/KVM pfn:102be1
[ 1533.106875] BUG: Bad page state in process CPU 0/KVM pfn:102be2
[ 1533.107412] BUG: Bad page state in process CPU 0/KVM pfn:102be3
[ 1533.111166] BUG: Bad page state in process CPU 0/KVM pfn:102bee[unhandled content-type:application/x-xz]
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