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RE: [Xen-users] xen-unstable amd64 troubles

To: Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>, Xen Users <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] xen-unstable amd64 troubles
From: Thomas Schneider <etomsch@xxxxxxxxxx>
Date: Fri, 11 Nov 2005 10:37:10 +0100
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please excuse my late reply, but I had a lot of work to do last night. I tried the latest changeset again this morning, but got the same problems again.

xm info
system                 : Linux
host                   : atbroy64
release                :
version                : #2 Fri Nov 11 08:34:18 GMT 2005
machine                : x86_64
nr_cpus                : 1
nr_nodes               : 1
sockets_per_node       : 1
cores_per_socket       : 1
threads_per_core       : 1
cpu_mhz                : 2002
hw_caps                : 078bfbff:e1d3fbff:00000000:00000010
memory                 : 1534
free_memory            : 224
xen_major              : 3
xen_minor              : 0
xen_extra              : -devel
xen_caps               : xen-3.0-x86_64
xen_params             : virt_start=0xffff800000000000
xen_changeset          : Thu Nov 10 18:43:56 2005 +0100 7745:b9e8654c3f10
cc_compiler            : gcc version 3.4.4 (Gentoo 3.4.4-r1)
cc_compile_by          : root
cc_compile_date        : Fri Nov 11 08:41:18 GMT 2005

I customized the kernel to accomplish my hardware needs.
The machine got 1500MB of mem, Dom0 got 512 from these, the other 3 DomUs got 256.

I'm almost sure, that my kernel-config is right for my machine.

Thanks in advance,


--On 10. November 2005 16:49:03 +0000 Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx> wrote:

Please can you try figuring out how to repro.

Also, in bug reports please aditionally state:
 * your changeset number (please always make sure you're using the
 * whether you have modified the kernel config in any way
 * how much memory your machine has, how much each of the domains have

I think this issue may already be on bugzilla. Would like to get it
nailed, but we need more info to repro.


I'm using xen-unstable with all the latest changesets and
some domains on it on a amd64 machine.
Today my domains crashed with the following output:

Unable to handle kernel paging request at ffff88000e928700 RIP:
PGD 788067 PUD 789067 PMD 7fe067 PTE 0
Oops: 0002 [1]
Pid: 0, comm: swapper Not tainted
RIP: e030:[<ffffffff803988ca>] <ffffffff803988ca>{netif_poll+1354}
RSP: e02b:ffffffff806d3d98  EFLAGS: 00010212
RAX: ffff88000e928700 RBX: ffff88000e909940 RCX: ffff88000e928058
RDX: ffff88000e928700 RSI: ffff88000e9091c0 RDI: ffff88000e909940
RBP: ffff88000e909940 R08: 0000000000feffff R09: 0000000000000017
R10: ffff88000f312250 R11: 0000000000000001 R12: ffff8800016d4360
R13: ffff88000167c550 R14: 00000000000000c0 R15: 0000000000000000
FS:  0000000000505ae0(0000) GS:ffffffff806c0080(0000)
CS:  e033 DS: 0000 ES: 0000
Process swapper (pid: 0, threadinfo ffffffff806d2000, task
Stack: 0000000180117076 0000000200000040 0000000000000002
       ffffffff806d3e2c ffff8800016d4000 ffffffff806d3dc8
       ffff880000000000 ffff8800016d4000 Call
       <ffffffff8013264d>{do_softirq+61} <ffffffff80114ea9>{do_IRQ+57}
       <ffffffff8010fa53>{xen_idle+83} <ffffffff8010fa53>{xen_idle+83}

Code: c7 00 01 00 00 00 48 8b 83 10 01 00 00 c7 40 04 00 00
00 00 RIP <ffffffff803988ca>{netif_poll+1354} RSP <ffffffff806d3d98>
CR2: ffff88000e928700
 <0>Kernel panic - not syncing: Aiee, killing interrupt handler!

xm dmesg tells me:

(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to
switch input to Xen).
(XEN) gnttab_transfer: invalid pfn for mfn=4f27e001
(XEN) gnttab_transfer: invalid pfn for mfn=3f7df001
(XEN) gnttab_transfer: invalid pfn for mfn=3f03b001
(XEN) gnttab_transfer: invalid pfn for mfn=516ca001
(XEN) gnttab_transfer: invalid pfn for mfn=4f306001
(XEN) gnttab_transfer: invalid pfn for mfn=50cf0001
(XEN) gnttab_transfer: invalid pfn for mfn=52305001
(XEN) gnttab_transfer: invalid pfn for mfn=510ce001
(XEN) gnttab_transfer: invalid pfn for mfn=3efc1001
(XEN) gnttab_transfer: invalid pfn for mfn=3efc2001
(XEN) gnttab_transfer: invalid pfn for mfn=3efc3001
(XEN) gnttab_transfer: invalid pfn for mfn=4e74c001
(XEN) gnttab_transfer: invalid pfn for mfn=4e74d001
(XEN) gnttab_transfer: invalid pfn for mfn=4e74e001

except from that there's nothing unusual in any logs/debug-outputs.

Could anyone please explain to me, what could be done here?

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