[Xen-bugs] [Bug 1594] New: CPU may panic when running cpu online/offline for more than 100 times

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1594

           Summary: CPU may panic when running cpu online/offline for more
                    than 100 times
           Product: Xen
           Version: unstable
          Platform: All
        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: 21057
Hardware: Stoakley
Other:
xen-changeset:   21057:0475c567c708

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

ioemu git: 
commit 73cef2cca413c17f314724c66194315038ea66c3
Author: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Date:   Thu Mar 18 16:50:44 2010 +0000

Bug detailed description:
--------------------------
On our nightly machine(Stoakley), when online/offline cpu for several times(for
example more than 100 times), cpu may panic. This bug is different with 1590.
There are two kinds of error log we met:

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

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


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