"visualize" kernel memory allocations

[Antoine Brodin]

On Tue, Apr 15, 2008 at 2:37 PM, Antoine Brodin <antoine at freebsd.org> wrote:
> On Mon, Apr 14, 2008 at 9:18 PM, Volker <volker at vwsoft.com> wrote:
>  > Hi hackers!
>  >
>  >  I need to hunt kernel memory allocations done by a kld. Unfortunately
>  >  the kld in question is a blob, no access to source code, so I need to
>  >  check for kmem_alloc() + kmem_malloc() + kmem_free() and print
>  >  information from there to the console screen.
>
>  Hi Volker,
>
>  You could patch your kld (hexadecimal editor or something like that)
>  to call wrappers around the interesting functions that print the
>  arguments.

"objcopy --redefine-syms" seems to be easier to use than a hexadecimal editor.

Cheers,

Antoine