From: "Han, Huaitong" <huaitong.han@intel.com>
To: "decui@microsoft.com" <decui@microsoft.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: WARNING: at arch/x86/kvm/mmu.c:3589 handle_mmio_page_fault+0x362/0x370
Date: Thu, 9 Mar 2017 03:02:18 +0000 [thread overview]
Message-ID: <1489028538.3660.8.camel@intel.com> (raw)
In-Reply-To: <MWHPR03MB266985D95F3A411673F73C3CBF2F0@MWHPR03MB2669.namprd03.prod.outlook.com>
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.
prev parent reply other threads:[~2017-03-09 4:53 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-07 15:49 WARNING: at arch/x86/kvm/mmu.c:3589 handle_mmio_page_fault+0x362/0x370 Dexuan Cui
2017-03-08 1:06 ` Wanpeng Li
2017-03-08 6:36 ` Dexuan Cui
2017-03-09 3:02 ` Han, Huaitong [this message]
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