[Xen-bugs] [Bug 1550] New: [TXT] txt-stat tool read data from memory will cause Dom0 hang

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1550

           Summary: [TXT] txt-stat tool read data from memory will cause
                    Dom0 hang
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: Linux-2.6
            Status: NEW
          Severity: major
          Priority: P1
         Component: Hypervisor
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: jiajun.xu@xxxxxxxxx


Environment:
------------
Service Arch (ia32/ia32e/IA64): ia32e ia32pae
Hardware: Weybridge

xen-changeset:   20512:ba68bb0d229c

pvops git: 
commit 8735edb4a976105fd29c97c00c6d14760537e4ee
Merge: ad862de... 06040e2...
Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>

ioemu git: 
commit f72b6e0ffc3bb84d4442c5a7493bffbdce2a4468
Author: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Date:   Wed Nov 4 17:07:57 2009 +0000

tboot changeset: 
changeset:   176:e57acd4d1460
tag:         tip
user:        Shane Wang <shane.wang@xxxxxxxxx>
date:        Fri Oct 16 04:03:14 2009 -0700
summary:     Fixed a timeout bug in 163


Bug detailed description:
--------------------------
When we boot xen with Tboot, and trace the log to a memory location and also
over a serial port to a remote console. After dom0 boot up, when using txt-stat
tool to read TXT information, dom0 will hang and serial cosole will print some
memory error message.(see attachment)

Grub config:
title 32e Tboot Xen
        root (hd0,4)
        kernel /boot/tboot.gz logging=vga,serial,memory
        module /boot/xen.gz no-real-mode com1=115200,8n1 xencons=ttyS
console=com1,vga iommu=required msi=1
        module /boot/vmlinuz-2.6-xen ro root=/dev/sda5 console=hvc0
earlyprintk=xen
        module /boot/initrd-2.6-xen.img
        module /root/BRLK_SINIT_20080522_debug.BIN

Reproduce steps:
----------------
1. boot Xen
2. use txt-stat tool to read TXT information


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