[Xen-bugs] [Bug 1264] New: Destorying DomU guest will cause dom0 crash on 32PAE host

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1264

           Summary: Destorying DomU guest will cause dom0 crash on 32PAE
                    host
           Product: Xen
           Version: unstable
          Platform: x86
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: P1
         Component: Unspecified
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: haicheng.li@xxxxxxxxx


------------
Service OS (ia32/ia32e/IA64): ia32pae
Guest OS (ia32/ia32e/IA64): ia32pae
Change Set: 17731
Hardware: Clovertown



Bug detailed description:
--------------------------
on 32pae host, when we create one DomU guest, we can not see the boot steps,
using "xm list" we can find guest is running, but can not connect it with "xm
console".
when we destory guest using "xm destory", it would cause dom0 crash. 

[root@vt-dp1 root]# xm cr -c x1
Using config file "./x1".
Started domain x1


[root@vt-dp1 ~]# xm li
Name                                        ID   Mem VCPUs      State   Time(s)
Domain-0                                     0  1024     8     r-----     20.9
x1                                           1   256     1     r-----     14.7
[root@vt-dp1 ~]# xm des 1



Reproduce steps:
----------------
1) prepare one DomU image
2) creat DomU guest
3) xm destory guest_dom_ID

Current result:
----------------


Expected result:
----------------


Basic root-causing log:
----------------------
BUG: soft lockup detected on CPU#2!
 [<c014ffd7>] softlockup_tick+0x97/0xd0
 [<c01097ba>] timer_interrupt+0x2fa/0x6c0
 [<c011c219>] __wake_up_common+0x39/0x60
 [<c0137413>] __rcu_process_callbacks+0x143/0x230
 [<c0150343>] handle_IRQ_event+0x33/0xa0
 [<c0150458>] __do_IRQ+0xa8/0x120
 [<c010770f>] do_IRQ+0x3f/0xa0
 [<c0249d20>] evtchn_do_upcall+0xe0/0x1f0
 [<c0105bbd>] hypervisor_callback+0x3d/0x45
 [<c0108c7a>] raw_safe_halt+0x9a/0x120
 [<c0104709>] xen_idle+0x29/0x50
 [<c01036dd>] cpu_idle+0x6d/0xc0


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