On Tue, 2017-03-07 at 15:49 +0000, Dexuan Cui wrote: > With today's git://git.kernel.org/pub/scm/virt/kvm/kvm.git (4.11.0-rc1+), > I got this warning on the host and the VM hung. > > Any idea? > > [ 124.238033] net0: port 2(tap0) entered blocking state > [ 124.238047] net0: port 2(tap0) entered forwarding state > [ 146.117829] kvm [2853]: vcpu0, guest rIP: 0xffffffff810644b8 disabled perfctr wrmsr: 0xc2 data 0xffff > [ 550.713144] walk_shadow_page_get_mmio_spte: detect reserved bits on spte, addr 0x7f48b000, dump hierarchy: > [ 550.713175] ------ spte 0x252364107 level 4. > [ 550.713186] ------ spte 0x252b14107 level 3. > [ 550.713197] ------ spte 0x252d60107 level 2. > [ 550.713207] ------ spte 0x224000055 level 1. Bit3-5 of pte 0x224000055 is memory type, the value is 2 leads EPT misconfig, the root cause cannot be found only with code reading, it depends on you to reproduce the issue repeatedly.
