Re: PCP 2.3.0 dumps core on Linux system without module support

[Mike Mason <mmlnx@xxxxxxxxxx>]

Are you using the latest 2.3.0 source tarball dated 11/21/2002 at 8:01 
PM?  There was a known problem in that area of ksym.c that _should be_ 
fixed in the latest source.  If you're using the latest source then we 
still have a problem.
--
Mike Mason
IBM Linux Technology Center
Beaverton, OR, USA
mmlnx@xxxxxxxxxx

David Douthitt wrote:
> I'm running a system using the Linux 2.4.19-aa1 kernel without module 
> support.  pmcd dumps core after running in ksyms.c.  Specifically, it 
> dumps core in the find_dup_name function on the line:
>  
> res = strcmp(ksym_a[i].name, name);
>  
> since ksym_a[i] is equal to 0x0.  This function is called from line 417:
>  
>             /* Determine if symbol is already in ksym array.
>                If so, make sure the addresses match. */
>             res = find_dup_name(ix - 1, addr, strbuf);
> which is called from:
>  
> void
> read_ksym_sources()
> {
>     __psint_t end_addr;
>  
>     /* ...snip... */
>  
>     if (read_ksyms(&end_addr)) /* read /proc/ksyms first */
>         read_sysmap(end_addr);  /* then System.map  */
> }
> I'm not sure how to fix this; checking for a null is easy but fixing 
> (and understanding) the cause is better.  I have a corefile available....
>  
> The reason I tried 2.3.0 is because many of my systems are reporting no 
> disk performance measurements (disk.*) at all.
>  
>  
> David Douthitt
> CUNA & Affiliates
> UNIX Systems Administrator
> ddouthitt@xxxxxxxxx <mailto:ddouthitt@xxxxxxxxx>
>  
>