Re: [Xen-devel] crash can't analyze memory dumpfile of Xen

[Itsuro ODA <oda@xxxxxxxxxxxxx>]

Hi,

I recieved the dump file via FTP from Yuji and I can reproduced
the problem.

Hmm, it seems the format of the crash note section is not expected.
(and there is another problem; "jiffies" is lost.)
I will check more deeply.

Until the problem is fixed, try the following quick hack.
------------------------------------------------------------------
--- xen_hyper.c.org     2008-09-05 12:48:57.000000000 +0900
+++ xen_hyper.c 2008-09-05 13:32:28.000000000 +0900
@@ -150,7 +150,7 @@
         * Do some initialization.
         */
 #ifndef IA64
-       xen_hyper_dumpinfo_init();
+//     xen_hyper_dumpinfo_init(); /* XXX: should be fixed !! */
 #endif
        xhmachdep->pcpu_init();
        xen_hyper_domain_init();
@@ -1746,9 +1746,11 @@
                        tmp2 = (ulong)jiffies_64;
                        jiffies_64 = (ulonglong)(tmp2 - tmp1);
                }
-       } else {
+       } else if (symbol_exists("jiffies")) {
                get_symbol_data("jiffies", sizeof(long), &jiffies);
                jiffies_64 = (ulonglong)jiffies;
+       } else {
+               jiffies_64 = 0; /* XXX: find alternative !! */
        }
 
        return jiffies_64;
------------------------------------------------------------------
(the "dumpinfo" sub command cannot be used.)

Thanks.
Itsuro Oda

On Thu, 04 Sep 2008 16:29:51 +0900
Yuji Shimada <shimada-yxb@xxxxxxxxxxxxxxx> wrote:

> Hi ODA-san,
> 
> Thank you so much for your reply.
> 
> > What arch did you use ?
> 
> I used x86_64 arch.
> 
> > If you send me xen-syms-3.3-unstable and dumpfile.core
> > I will investigate more.
> 
> Please find "xen-syms-3.3-unstable", attached with the mail.
> If you need "dumpfile.core" to investigate this issue, please let me know.
> 
> In such case, I think I should send you "dumpfile.core" stored on
> the disk by post, or upload it to your site. Because it is a huge size.
> 
> Thanks,
> 
> --
> Yuji Shimada

-- 
Itsuro ODA <oda@xxxxxxxxxxxxx>


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