Hi, This patch improves backtrace of xen-ia64. If the cpu map is not contiguous, we cannot get the stack address. Signed-off-by: Akio Takebe <takebe_akio(a)jp.fujitsu.com&gt; Best Regards, Akio Takebe --- --- crash-4.0-6.3.orig/ia64.c 2008-04-30 02:39:16.000000000 +0900 +++ crash-4.0-6.3/ia64.c 2008-05-21 15:05:53.000000000 +0900 @@ -4167,14 +4167,14 @@ ia64_in_mca_stack_hyper(ulong addr, stru if (!machdep->kvtop(NULL, addr, &paddr, 0)) return 0; - __per_cpu_mca = (ulong *)GETBUF(sizeof(ulong) * xht->pcpus); + __per_cpu_mca = (ulong *)GETBUF(sizeof(ulong) * plen); if (!readmem(symbol_value("__per_cpu_mca"), KVADDR, __per_cpu_mca, - sizeof(ulong) * xht->pcpus, "__per_cpu_mca", RETURN_ON_ERROR|QUIET)) + sizeof(ulong) * plen, "__per_cpu_mca", RETURN_ON_ERROR|QUIET)) return 0; if (CRASHDEBUG(1)) { - for (i = 0; i < xht->pcpus; i++) { + for (i = 0; i < plen; i++) { fprintf(fp, "__per_cpu_mca[%d]: %lx\n", i, __per_cpu_mca[i]); }