The following is a diff that would solve smbd panic on HPUX.  It is an issue on 
platforms such as HPUX when buf begins in odd number of bytes.  Other 
dispatcher registered functions are fine since most of them memcpy or fstrcpy 
data out of "buf" to a local buffer.

1204c1204
<       struct print_queue_update_context *ctx;
---
>       struct print_queue_update_context ctx;
1211,1214c1211,1214
<       ctx = (struct print_queue_update_context*)buf;
<       print_queue_update_internal(ctx->sharename,
<               get_printer_fns_from_type(ctx->printing_type),
<               ctx->lpqcommand );
---
>       strncpy(&ctx, buf, len);
>       print_queue_update_internal(ctx.sharename,
>               get_printer_fns_from_type(ctx.printing_type),
>               ctx.lpqcommand );