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[Xen-bugs] [Bug 1596] New: System hang after many times cpu online/offli

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Subject: [Xen-bugs] [Bug 1596] New: System hang after many times cpu online/offline
From: bugzilla-daemon@xxxxxxxxxxxxxxxxxxx
Date: Mon, 29 Mar 2010 07:48:55 -0700
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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1596

           Summary: System hang after many times cpu online/offline
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Hypervisor
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: jiajun.xu@xxxxxxxxx


Environment:
------------
Service Arch (ia32/ia32e/IA64): ia32/ia32e
Guest Arch (ia32/ia32e/IA64): 
Guest OS Type (Linux/Windows):
Change Set: 21075
Hardware: Stoakley/Gulftown-HEDT
Other:

xen-changeset:   21075:21d7095162da

pvops git: 
commit 4ebd1335d19117929e939878a2e38b6c92a0ffb7
Merge: 9b258d1... 485c44e...
Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>

ioemu git: 
commit f1d909f0f854194f5a40d850886d1413fb8b63c2
Author: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Date:   Wed Mar 24 17:16:51 2010 +0000


Bug detailed description:
--------------------------
On our machine(Stoakley/Gulftown-HEDT), when online/offline cpu for several
times, system may hangwithout Xen/Dom0 error log printed.

To repoduce the bug, you can compile the two attached C file and run following
script:
###################
#!/bin/sh
i=0

while [ $i -le 100 ]
do
./cpu_offline 1 2 3
./cpu_online 1 2 3
i=$(i+1)
done
###################


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