[Xen-bugs] [Bug 1664] New: HVM guest hang when run stress testing

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1664

           Summary: HVM guest hang when run stress testing
           Product: Xen
           Version: unstable
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P1
         Component: HVM
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: yang.z.zhang@xxxxxxxxx


Environment:
------------
Service Arch (ia32/ia32e/IA64): ia32/ia32e
Guest Arch (ia32/ia32e/IA64): ia32e
Guest OS Type (Linux/Windows):Linux
Change Set: 21952
Hardware: all
Other:


Bug detailed description:
--------------------------
we run a stress case against xenu and hvm. In the case, we run three xenu guest
and three hvm guest. And both the guests are doing kernel build. 
After running two days, we find that one of the hvm guest hangs and it print
error like "soft lockup: CPU#0 stuck for 10s". Attachment show more details of
the error.


Reproduce steps:
----------------
1.run three xenu and hvm guest
2.doing kernel build inside the guest
3.wait for long time(maybe two days), you will find hvm guest hangs.

Current result:
----------------
hvm guest hangs

Expected result:
----------------
all guest alive


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