Re: reboot after "scrubbing free ram"

["Bastian Mäuser" <mephisto@mephis.to>]

On 02/09/2011 12:40 PM, Bastian Mäuser wrote:
> On 02/09/2011 12:12 PM, Ian Campbell wrote:
>> On Wed, 2011-02-09 at 10:16 +0000, Bastian Mäuser wrote: 
>>> Hello,
>>>
>>> I have some diagnostic Info for you. Tried to get xen-4.0.1 working on
>>> another node of my cluster. Only difference: Newer revision of the
>>> Hardware. Exactly same Software Stack.
>>>
>>> Stack: Ubuntu Lucid 64bit, xen-4.0.1 from Source, selfbuilt
>>> linux-2.6.32.27 from xen/stable-2.6.32.x
>>>
>>> Nodes working: HP DL380G5 16GB (Intel X5460)
>>>
>>> Node not working: HP DL380G6 16GB (Intel X5550)
>>>
>>> Effect: Xen starts but dom0 Crashes immidiately after I see the message
>>> "Scrubbing free Ram". I attached Screenshot of the Management Processors
>>> Serial Port.
>>>
>>> I used the same dom0 kernel deb that successfully runs on other Nodes
>>> (as well on xen-4.0.1).
>>>
>>> Any ideas? I'm really stuck on this. I use XEN since 5+ years, but I
>>> never had that one..
>> Please can you convert the faulting RIP address to a line of code. e.g.
>> using
>> $ gdb vmlinux
>> (gdb) list *0xffff.....
> I need some more Info on that. GDB'ing the Kernel Image won't work right?
>> Please see also "Are there more debugging options I could enable to
>> troubleshoot problems with Xen and/or dom0 kernel?"
>> http://wiki.xen.org/xenwiki/XenParavirtOps for other debug options to
>> try.
> This is my Debugging:
>
>   multiboot /boot/xen-4.0.1.gz dom0_mem=1024M dummy=dummy loglvl=all
> guest_loglvl=all sync_console console_to_ring com1=115200,8n1
> console=com1 lapic=debug apic_verbosity=debug apic=debug iommu=off
>   module /boot/vmlinuz-2.6.32.27 dummy=dummy root=/dev/cciss/c0d0p1 ro
> console=hvc0 earlyprintk=xen nomodeset initcall_debug debug loglevel=10
>   module /boot/initrd.img-2.6.32.27
>

ffffffff8187da0a T xen_hvm_init_mmu_ops
ffffffff8187da4f t xen_set_pte_init
ffffffff8187dad4 t xen_pagetable_setup_done
ffffffff8187db94 T xen_build_dynamic_phys_to_machine

that's around the RIP Address..

Bastian