Subject: Re: kvm splat in mmu_spte_clear_track_bits
To: Takashi Iwai <tiwai@suse.de>
Cc: Adam Borowski <kilobyte@angband.pl>,
        Paolo Bonzini <pbonzini@redhat.com>, Wanpeng Li <kernellwp@gmail.com>,
        =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= <rkrcmar@redhat.com>,
        kvm <kvm@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
References: <20170820231302.s732zclznrqxwr46@angband.pl>
 <CANRm+CyjzpMFUJtfcK_WSCOGz4DcgjNTkA6ih2Hvm9bOBitdjA@mail.gmail.com>
 <20170821191203.jospdwqpnixlotx3@angband.pl> <20170821195833.GA696@flask>
 <20170821223228.edc6jrm7bpybtqlj@angband.pl>
 <1c270e76-05be-6f5f-29c6-9cb31f37f71d@redhat.com>
 <CANRm+Cyh6xs4c8Ed2yDFGbOeuyCohTO_+AUBdwM6co5Mkj1tXQ@mail.gmail.com>
 <20170825131419.r5lzm6oluauu65nx@angband.pl>
 <0a85df4b-ca0a-7e70-51dc-90bd1c460c85@redhat.com>
 <20170827123505.u4kb24kigjqwa2t2@angband.pl>
 <0dcca3a4-8ecd-0d05-489c-7f6d1ddb49a6@gmx.de> <s5hfucb65ry.wl-tiwai@suse.de>
From: Bernhard Held <berny156@gmx.de>
Message-ID: <c709fc41-a15b-2fbb-218a-9e7b8dc33708@gmx.de>
Date: Mon, 28 Aug 2017 18:07:37 +0200
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On 08/28/2017 at 06:01 PM, Takashi Iwai wrote:
> On Mon, 28 Aug 2017 17:26:05 +0200,
> Bernhard Held wrote:
>> I get crashes with Win10 in kvm
>>
> Did you get the crash reliably?
> I've been struggling how to trigger it efficiently, but currently in
> vain.  The memory pressure isn't a single key to trigger it, as it
> seems...

Yes, I get the crash pretty reliable with Win10 in kvm after 10 to 30 minutes. Some workload in Windows seems to be necessary to trigger the bug.