Messages in this thread | | | Subject | Re: 5.0-rc1 KVM inspired "BUG: Bad page state in process" spew | From | Mike Galbraith <> | Date | Wed, 09 Jan 2019 16:03:16 +0100 |
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On Wed, 2019-01-09 at 15:42 +0100, Adam Borowski wrote: > On Wed, Jan 09, 2019 at 06:38:58AM +0100, Mike Galbraith wrote: > > 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. > > I get same, except that the BUGs were preceded by a bunch of warnings,
Yeah, I was in too much of a rush...
> > 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 > > the first one being: > > Jan 9 00:41:22 umbar kernel: [74122.790461] WARNING: CPU: 2 PID: 26769 at arch/x86/kvm/mmu.c:830 mmu_spte_clear_track_bits+0x7e/0x100
...I also get oodles of those.
-Mike
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