[Xen-bugs] [Bug 1590] New: System hang after several times cpu online/offine

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1590

           Summary: System hang after several times cpu online/offine
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P1
         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: 21022
Hardware: Stoakley/Gulftown-HEDT
Other:
xen-changeset:   21022:132ac04cbdba

pvops git:
commit eb739cf358e03cd6ab69437d2429bcc8ad57d45b
Merge: be6c421... 5e20b95...
Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>

ioemu git:
commit 4ee8bdd513b4d7af0e14434f4c53887779a33eda
Author: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Date:   Tue Mar 9 17:55:41 2010 +0000

Bug detailed description:
--------------------------
On our nightly machine(Stoakley/Gulftown-HEDT), when online/offine cpu for
several times, system may hang without Xen/Dom0 error log printed. 

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

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


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