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xen-devel
RE: [Xen-devel] hvm domain crash
> After doing quite a bit of testing I came upon something repeatable.
When
> using 4way with 2GB sometimes it would work and sometimes not. With
8way
> 4GB
> it was much more consistent and I was able to narrow it down to a
single
> point. With 3840 MB I can boot without problems, if I increase the
memory
> to
> 3841 it will not boot. Something interesting is that very close (<
6MB
> over)
> I actually get slightly different progress before crashing as opposed
to
> always in the same place. If I am way over (say I put in 4096) it
always
> crashes after the "Freeing unused kernel memory: 200k freed" message.
If I
> am closer (like 3841) I can actually get to the point of seeing a few
init
> scripts run before it crashes. If I am at something like 3844 it
tends to
> crash right after udev which immediately follows the "Freeing..."
message.
Just to confirm, this is with a recent (e.g. 24h) xen-unstable (or
3.0.3-testing.hg), and the guest is an x86_64 linux 2.6.16 ?
Please can you try using a debug=y build of Xen to see if we get any
extra output.
Thanks,
Ian
> Karl
>
> On Thursday 21 September 2006 4:55 pm, Keir Fraser wrote:
> > That's quite a big CR3 value. How much memory does this guest have?
> >
> > -- Keir
> >
> > On 21/9/06 10:56 pm, "Karl Rister" <kmr@xxxxxxxxxx> wrote:
> > > (XEN) Invalid CR3 value=10f780000domain_crash_sync called from
> vmx.c:1679
> > > (XEN) Domain 5 (vcpu#1) crashed on cpu#4:
> > > (XEN) ----[ Xen-3.0-unstable x86_64 debug=n Not tainted ]----
> > > (XEN) CPU: 4
> > > (XEN) RIP: 0010:[<ffffffff8017680c>]
> > > (XEN) RFLAGS: 0000000000000293 CONTEXT: hvm
> > > (XEN) rax: 000000010f780000 rbx: 0000000000000001 rcx:
> > > 0000000000000000 (XEN) rdx: ffff81010f780000 rsi:
0000000000000000
> > > rdi: ffff81010fc6db5c (XEN) rbp: ffffffff803f3000 rsp:
> ffff81010fc6fb48
> > > r8: 0000000000000000 (XEN) r9: 0000000000000000 r10:
> > > 0000000000000000 r11: 0000000000000000 (XEN) r12:
ffff81010fb39a80
> > > r13: 0000000000000000 r14: ffff81010fc6d510 (XEN) r15:
> ffff81010fc66ac0
> > > cr0: 000000008005003b cr4: 00000000000006e0 (XEN) cr3:
> > > 000000015f4c1000 cr2: 0000000000000000
> > > (XEN) ds: 0018 es: 0018 fs: 0000 gs: 0000 ss: 0018 cs:
0010
> > >
> > > The domain was running with 4 VCPUs and had previously completed
the
> test
> > > on a single VCPU and 2 VCPU configurations. The domain was
running a
> > > baremetal 2.6.16.29 kernel. Output from 'xm info' is:
>
> --
> Karl Rister
> IBM Linux Performance Team
> kmr@xxxxxxxxxx
> (512) 838-1553 (t/l 678)
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
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