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[Xen-devel] illegal page update with latest xen-unstable

To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] illegal page update with latest xen-unstable
From: urmk@xxxxxxxxxxxxx
Date: Tue, 14 Oct 2003 13:46:20 -0400
Delivery-date: Tue, 14 Oct 2003 18:47:42 +0100
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Just checked out the latest xen-unstable this morning and am getting some 
interesting (read: bad) behavior...

The easiest way to reproduce the error is to just run 'make' in the 
xeno-unstable.bk tools directory.  The ant run hangs, and when I kill it
(both at console or from ssh) I get a machine reboot.

The build command (not very interesting):
root@xeno:~/xeno-unstable/xeno-unstable.bk/tools/control# make
ant -buildfile build-cmdline.xml dist

The xen serial console error:
DOM0 FATAL ERROR: Illegal page update request
Domain 0 killed: rebooting machine!

Xen 1.0 works fine for me, and I built unstable using the xen-clone script.

(clock on this machine is off, it was really built at 11am oct 14.)

Xen version 1.1-devel (root@xxxxxxxxxxxxx) (gcc version 3.2.2) Mon Oct 13 
17:46:04 EDT 2003

DOM0: Linux version 2.4.22-xeno (root@xeno) (gcc version 3.2.2) #2 Mon Oct 13 
17:50:12 EDT 2003
DOM0: Kernel command line: /boot/xenolinux-unstable.gz root=/dev/sda1 ro 
console=xencons0 console=tty0 consoe=ttyS0 DOMID=0

The box physically has 2 gig of ram and dom0 is limited to 128 meg.

On a different tangent, I also get a fatal error getting CPU performance 
counters over the serial link with the unstable tree:

CPU performance counters for CPU 0 (current):
general protection fault: 0000,0000 
CPU:    0
EIP:    0808:[<fc507f8e>]       
EFLAGS: 00211282
eax: 00000000   ebx: fc5ad480   ecx: 000000c1   edx: 000003f8
esi: 000003fd   edi: 000003f8   ebp: fc502f60   esp: fc502ed0
ds: 0810   es: 0810   fs: 0810   gs: 0810   ss: 0810
Stack trace from ESP=fc502ed0:
fc58c860 00000000 00201092 00000000 00000063 000003fd 000003f8 [fc513c67]
       00000063 00000000 fc502f60 00000063 00000004 00000000 [fc57ba45] 
       00000000 00000004 fc5b2ac0 [fc57eb8c] 00000004 00000000 fc502f60 
       00201246 00000000 [fc5038c3] fc5ad480 82d43916 fc5f4a00 00000000 
       00000000 fc5ad480 00000000 [fc57bf60] fc5ad480 00000000 00000ffc 
       fc5ad480 00000000 00000000 fc5a0810 fc5a0810 00000810 fc5a0810 ffffff04
       [fc581b99] 00000808 00201246 c01999a0 00000000 [fc50c633] 0000000b 
       df2c622a fc5ad480 00000000 00000000 00000000 00000000 00000000 00000000
       00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
       00000000 00000000 00000000 fc5ad480

Aieee! CPU0 is toast...

Reboot in five seconds...
System Time went backwards: -104738496

The hardware is a IBM x-series, P4 2.4ghz, adaptec scsi, tg3 gbit, 2 gig ram.


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