On Fri, Feb 05, 2010 at 04:42:16PM +1100, Yasir Assam wrote:
I think I've narrowed down my random crashes to Xen 4.0.0 rc2 causing
memory corruption in domUs.
Xen 3.4.2 is ok, and it doesn't seem to matter which domU or dom0 kernel
I'm using.
I have two domUs, both PV
* 2.6.32.7 from kernel.org
* 2.6.18-xen
Everything is 64-bit.
The random segfaults I was getting looked like bad RAM, but memtest86
These segfaults - were they in dom0 or domU? What CPU do you have?
AMD/Intel?
Did you try to swap the memory modules when you were trying to narrow
this down?
didn't report any problems. So I ran memtester
(http://pyropus.ca/software/memtester/), a userspace mem test app.
When I ran memtester on the dom0 (assigning all available RAM to the
dom0) there was no problem. However, when I ran it against either of the
domUs, it reported problems with RAM. See memtester output below. The
corruption starts at around address 0x02404900.
Uninstalling 4.0 rc2 and installing 3.4.2 got rid of the problem, so it
looks like 4.0.0 rc2 could be the problem, rather than any of the
kernels or the hardware.
Did you compile 4.0.0-rc2 with debug=y?
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