This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-devel] Dom0 crashing on x86_64

On Wed, 2005-07-13 at 00:44 +0200, Vincent Hanquez wrote:
> On Tue, Jul 12, 2005 at 01:09:09PM -0500, David F Barrera wrote:
> > I am seeing a problem with Dom0 crashing on x86_64 whenever I create a
> > DomU. I've done some more testing, and it appears that this problem is
> > somehow related to networking. Dom0 crashes as soon as the networking
> > services are started when DomU is coming up.  As an experiment, I
> > brought up DomU without networking, and it stayed up. As soon as I
> > started DomU with networking enabled, however, Dom0 crashed. Below is
> > the trace:
> Hi David,
> I'm quite confused by other reports.
> Your latest "Daily Xen build" and Paul Larson's reply suggest that this
> bug was fix.

I understand. My report did suggest that the problem was fixed; however,
it was incorrect, as I later found out. It turns out that the DomU that
I had created did not have networking setup properly, thus the VM seemed
functional. When I corrected the networking setup and started a DomU,
Dom0 crashed. By the way, I just did it today, and the same thing is
happening--Dom0 is crashing. This is the trace that I see on the serial

Unable to handle kernel NULL pointer dereference at 0000000000000c20
PGD d313067 PUD d312067 PMD 0
Oops: 0000 [1]
Modules linked in: thermal processor fan button battery ac
Pid: 0, comm: swapper Not tainted 2.6.12-xen0
RIP: e030:[<ffffffff80118aba>] <ffffffff80118aba>{do_page_fault+426}
RSP: e02b:ffffffff8054ba00  EFLAGS: 00010202
RAX: 00000000013e4067 RBX: 0000000000000c20 RCX: 0000000000000000
RDX: 0000000000000067 RSI: 00000000093e4067 RDI: ffff800000000000
RBP: 0000000000000c20 R08: 00000000000000ff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: ffffc20000036000 R14: 0000000000000000 R15: ffffffff8054bb00
FS:  0000000000000000(0000) GS:ffffffff80537b80(0000)
CS:  e033 DS: 0000 ES: 0000
Process swapper (pid: 0, threadinfo ffffffff8054a000, task
Stack: ffff88000f414000 fff݅

> As well, is that on SLES9 userspace ?
> Cheers,

David F Barrera
Linux Technology Center
Systems and Technology Group, IBM

"The wisest men follow their own direction. "

Xen-devel mailing list