[Crash-utility] search -k

[Dave Anderson]

Yang Zhiguo wrote:
> hi,
>
> When i use search command as following, there is a Segmentation fault.
> crash> search -k 12345
> Segmentation fault
>
> With the following patch, it is OK?

I tried reproducing it on a readily-available ia64 running a RHEL5 xen 
kernel, and
the command runs OK for me.  I'll try it on a bare-metal ia64 tomorrow 
to see if that
makes a difference.

In any case, your patch would skip the vmalloc (region 5) area 
completely, so that's
not going to work.  So I need to know why it's failing on your machine.  
Can you
run crash from gdb, and figure out exactly which address it's failing on?

Thanks,
  Dave
>
> --- ../crash/crash-4.0-6.1/memory.c     2008-02-29 01:09:10.000000000 
> +0900
> +++ memory.c    2008-03-28 10:32:47.000000000 +0900
> @@ -11047,6 +11047,11 @@ search(ulong start, ulong end, ulong mas
>                        break;
>
>                case KVADDR:
> +                       if (machine_type("IA64") && 
> (machdep->machspec->kernel_start > pp)) {
> +                               pp = machdep->machspec->kernel_start;
> +                               continue;
> +                       }
> +
>                        if (!kvtop(CURRENT_CONTEXT(), pp, &paddr, 0) ||
>                            !phys_to_page(paddr, &page)) {
>                               if (!next_kpage(pp, &pp))
>
> Best Regards,
>
>
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