Wesley Naves de faira wrote:
> What is problem in this script ?
One of the pointers you're dereferencing is NULL.
>
> #!/usr/sbin/dtrace -s
>
> #pragma D option quiet
>
> fbt:ip:tcp_conn_request:entry
> {
> self->connp = (conn_t *)arg0;
> self->tcp = (tcp_t *)self->connp->conn_tcp;
>
>
> @backlog[self->tcp->tcp_conn_req_cnt_q,self->tcp->tcp_conn_req_max]=count();
>
> printf("\ntcp_conn_req_cnt_q: %d\n", self->tcp->tcp_conn_req_cnt_q);
> printf("\ntcp_conn_req_max: %d\n", self->tcp->tcp_conn_req_max);
> }
>
>
> When i run appear error:
>
> dtrace: error on enabled probe ID 1 (ID 38016:
> fbt:ip:tcp_conn_request:entry): invalid address (0x0) in action #4 at
> DIF offset 12
>
--
Michael Schuster http://blogs.sun.com/recursion
Recursion, n.: see 'Recursion'
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