[Xen-bugs] [Bug 1646] New: kernel panic when set vcpu to a pcpu

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1646

           Summary: kernel panic when set vcpu to a pcpu
           Product: Xen
           Version: unstable
          Platform: x86-64
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P2
         Component: HVM
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: yang.z.zhang@xxxxxxxxx


Environment:
------------
Service Arch (ia32/ia32e/IA64): ia32e/ia32
Guest Arch (ia32/ia32e/IA64): 
Guest OS Type (Linux/Windows):
Change Set: 21925
Hardware: Stoakley/Gulftown-HEDT
Other:
xen-changeset:   21925:8992134dcfd0

pvops git:
commit b29254c40dac94960fd3887275c65c83b71086ea
Merge: cc867b2... 9d85e25...
Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>

ioemu git:
commit 833e7e9a4c95739429dc0c803bbbf2346f9897fd
Author: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Date:   Thu Jul 8 17:33:29 2010 +0100

Bug detailed description:
--------------------------
use "xm vcpu-pin" to set which PCPUS a vcpu can use cause kernel panic. Our
operations are following.
[root@vt-nhm2 ~]# xm vcpu-list
Name                                ID  VCPU   CPU State   Time(s) CPU Affinity
Domain-0                             0     0     0   -b-     232.4 any cpu
Domain-0                             0     1     1   -b-     126.2 any cpu
Domain-0                             0     2     2   -b-     118.7 any cpu
Domain-0                             0     3     3   -b-     140.3 any cpu
Domain-0                             0     4     4   -b-     107.0 any cpu
Domain-0                             0     5     5   -b-     103.4 any cpu
Domain-0                             0     6     6   r--     108.3 any cpu
Domain-0                             0     7     7   -b-     102.5 any cpu
Domain-0                             0     8     8   -b-     144.6 any cpu
Domain-0                             0     9     9   -b-      91.7 any cpu
Domain-0                             0    10    10   -b-      93.0 any cpu
Domain-0                             0    11    11   -b-      95.9 any cpu
[root@vt-nhm2 ~]# xm vcpu-pin 0 0 1

Than OS will hang.


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