<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=big5">
<meta name="Generator" content="Microsoft Word 12 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:新細明體;
panose-1:2 2 5 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
@font-face
{font-family:"\@新細明體";
panose-1:2 2 5 0 0 0 0 0 0 0;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoPlainText, li.MsoPlainText, div.MsoPlainText
{mso-style-priority:99;
mso-style-link:"Plain Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.5pt;
font-family:Consolas;}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
p.MsoListParagraphCxSpFirst, li.MsoListParagraphCxSpFirst, div.MsoListParagraphCxSpFirst
{mso-style-priority:34;
mso-style-type:export-only;
margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
p.MsoListParagraphCxSpMiddle, li.MsoListParagraphCxSpMiddle, div.MsoListParagraphCxSpMiddle
{mso-style-priority:34;
mso-style-type:export-only;
margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
p.MsoListParagraphCxSpLast, li.MsoListParagraphCxSpLast, div.MsoListParagraphCxSpLast
{mso-style-priority:34;
mso-style-type:export-only;
margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.PlainTextChar
{mso-style-name:"Plain Text Char";
mso-style-priority:99;
mso-style-link:"Plain Text";
font-family:Consolas;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.25in 1.0in 1.25in;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:356779554;
mso-list-type:hybrid;
mso-list-template-ids:-1031490704 649639064 67698713 67698715 67698703 67698713 67698715 67698703 67698713 67698715;}
@list l0:level1
{mso-level-tab-stop:none;
mso-level-number-position:left;
margin-left:.75in;
text-indent:-.25in;}
@list l0:level2
{mso-level-tab-stop:1.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level3
{mso-level-tab-stop:1.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level4
{mso-level-tab-stop:2.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level5
{mso-level-tab-stop:2.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level6
{mso-level-tab-stop:3.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level7
{mso-level-tab-stop:3.5in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level8
{mso-level-tab-stop:4.0in;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level9
{mso-level-tab-stop:4.5in;
mso-level-number-position:left;
text-indent:-.25in;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal">Bug description:<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in">A sever bug was found on 64-bit Windows 7 VM which crashed after running idle for a while(~ 2-3 hours).<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in">When we checked the kvm process, it was killed from the system.<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in"><o:p> </o:p></p>
<p class="MsoNormal">Drivers installed:<o:p></o:p></p>
<p class="MsoNormal"> Qxl,<o:p></o:p></p>
<p class="MsoNormal"> Virtioserail<o:p></o:p></p>
<p class="MsoNormal"> Vdagent<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Qemu & Spice:<o:p></o:p></p>
<p class="MsoPlainText"> Hans’s Qemu + "spice-0.10.tar.gz"<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Steps to reproduce:<o:p></o:p></p>
<p class="MsoListParagraphCxSpFirst" style="margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Create a 64-bit Windows 7 VM image<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Install qxl, virioserai driver and vdagent<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Launch the VM and let it run idle <o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="mso-list:Ignore">4.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>After a couple of hours, the VM will crash<o:p></o:p></p>
<p class="MsoListParagraphCxSpLast" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoNormal">Memory demp information:<o:p></o:p></p>
<p class="MsoListParagraphCxSpFirst" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">0: kd> !analyze -v<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">*******************************************************************************<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">* *<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">* Bugcheck Analysis *<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">* *<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">*******************************************************************************<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">DRIVER_POWER_STATE_FAILURE (9f)<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">A driver is causing an inconsistent power state.<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">Arguments:<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">Arg1: 0000000000000003, A device object has been blocking an Irp for too long a time<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">Arg2: fffffa8003bb24b0, Physical Device Object of the stack<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">Arg3: fffff80003bd3518, Functional Device Object of the stack<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">Arg4: fffffa80025e9510, The blocked IRP<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">Debugging Details:<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">------------------<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">DRVPOWERSTATE_SUBCODE: 3<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">IRP_ADDRESS: fffffa80025e9510<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">DEVICE_OBJECT: fffffa8003bb24b0<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">DRIVER_OBJECT: fffffa8003a1ac70<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">IMAGE_NAME: vioser.sys<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">DEBUG_FLR_IMAGE_TIMESTAMP: 4fc31b19<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">MODULE_NAME: vioser<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">FAULTING_MODULE: fffff88003670000 vioser<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">BUGCHECK_STR: 0x9F<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">PROCESS_NAME: System<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">CURRENT_IRQL: 2<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">LAST_CONTROL_TRANSFER: from fffff80002930e53 to fffff800028c3040<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">STACK_TEXT: <o:p>
</o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">fffff800`03bd34c8 fffff800`02930e53 : 00000000`0000009f 00000000`00000003 fffffa80`03bb24b0 fffff800`03bd3518 : nt!KeBugCheckEx<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">fffff800`03bd34d0 fffff800`028cf0e6 : fffff800`03bd3600 fffff800`03bd3600 00000000`00000001 00000000`00000000 : nt! ?? ::FNODOBFM::`string'+0x28e30<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">fffff800`03bd3570 fffff800`028ce396 : fffff800`02a72700 00000000`00034df1 00000000`00000000 00000000`00000000 : nt!KiProcessTimerDpcTable+0x66<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">fffff800`03bd35e0 fffff800`028cf00e : 00000007`ddaba240 fffff800`03bd3c58 00000000`00034df1 fffff800`02a410a8 : nt!KiProcessExpiredTimerList+0xc6<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">fffff800`03bd3c30 fffff800`028ce707 : 00000059`a9892fc1 00000059`00034df1 00000059`a9892fbb 00000000`000000f1 : nt!KiTimerExpiration+0x1be<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">fffff800`03bd3cd0 fffff800`028cb77a : fffff800`02a3ce80 fffff800`02a4ac40 00000000`00000000 fffff880`00c3ef44 : nt!KiRetireDpcList+0x277<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">fffff800`03bd3d80 00000000`00000000 : fffff800`03bd4000 fffff800`03bce000 fffff800`03bd3d40 00000000`00000000 : nt!KiIdleLoop+0x5a<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">STACK_COMMAND: kb<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">FOLLOWUP_NAME: MachineOwner<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">FAILURE_BUCKET_ID: X64_0x9F_IMAGE_vioser.sys<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">BUCKET_ID: X64_0x9F_IMAGE_vioser.sys<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">Followup: MachineOwner<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">---------<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">0: kd> lmvm vioser<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">start end module name<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">fffff880`03670000 fffff880`03680000 vioser (private pdb symbols) d:\localsymbols\vioser.pdb<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"> Loaded symbol image file: vioser.sys<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"> Image path: \SystemRoot\system32\DRIVERS\vioser.sys<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"> Image name: vioser.sys<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"> Timestamp: Mon May 28 14:28:41 2012 (4FC31B19)<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"> CheckSum: 0000F577<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"> ImageSize: 00010000<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"> Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">0: kd> !devobj fffffa8003bb24b0 f<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">Device object (fffffa8003bb24b0) is for:<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">vport0p1 \Driver\VirtioSerial DriverObject fffffa8003a1ac70<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">Current Irp 00000000 RefCount 1 Type 0000001b Flags 0000304c<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">Dacl fffff9a100232a11 DevExt fffffa8003badbc0 DevObjExt fffffa8003bb2620 DevNode fffffa8003bbfb30
<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">ExtensionFlags (0000000000)
<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">Device queue is not busy.<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">0: kd> !irp fffffa80025e9510<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">Irp is active with 2 stacks 1 is current (= 0xfffffa80025e95e0)<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">No Mdl: No System Buffer: Thread 00000000: Irp stack trace.
<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"> cmd flg cl Device File Completion-Context<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">>[ 16, 2] 0 e1 fffffa8003bb24b0 00000000 fffff800028ad990-fffffa8002b61ce0 Success Error Cancel pending<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"> \Driver\VirtioSerial nt!IopUnloadSafeCompletion<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"> Args: 00014400 00000001 00000004 00000002<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in">[ 0, 0] 0 0 00000000 00000000 00000000-fffffa80027e32e0
<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-left:.75in"> Args: 00000000 00000000 00000000 00000000<o:p></o:p></p>
<p class="MsoListParagraphCxSpLast" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-indent:.5in"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>