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Dangling inseg.p pointer fix by Pedro Alves.

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This commit is contained in:
likewise 2006-04-08 00:13:49 +00:00
parent ef0575a26d
commit 6cb19d7e34
1 changed files with 75 additions and 77 deletions
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20
src/core/tcp_in.c
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@ -3,10 +3,10 @@
*
* Transmission Control Protocol, incoming traffic
*
* The input processing functions of TCP.
* The input processing functions of the TCP layer.
*
* These functions are generally called in the order (ip_input() ->) tcp_input() ->
* tcp_process() -> tcp_receive() (-> application).
* These functions are generally called in the order (ip_input() ->)
* tcp_input() -> * tcp_process() -> tcp_receive() (-> application).
*
*/
@ -80,7 +80,6 @@ static void tcp_parseopt(struct tcp_pcb *pcb);
static err_t tcp_listen_input(struct tcp_pcb_listen *pcb);
static err_t tcp_timewait_input(struct tcp_pcb *pcb);
/* tcp_input:
*
* The initial input processing of TCP. It verifies the TCP header, demultiplexes
@ -191,7 +190,6 @@ tcp_input(struct pbuf *p, struct netif *inp)
if (pcb == NULL) {
/* If it did not go to an active connection, we check the connections
in the TIME-WAIT state. */
for(pcb = tcp_tw_pcbs; pcb != NULL; pcb = pcb->next) {
LWIP_ASSERT("tcp_input: TIME-WAIT pcb->state == TIME-WAIT", pcb->state == TIME_WAIT);
if (pcb->remote_port == tcphdr->src &&
@ -306,12 +304,12 @@ tcp_input(struct pbuf *p, struct netif *inp)
}
/* We deallocate the incoming pbuf. If it was buffered by the
application, the application should have called pbuf_ref() to
increase the reference counter in the pbuf. If so, the buffer
isn't actually deallocated by the call to pbuf_free(), only the
reference count is decreased. */
if (inseg.p != NULL) pbuf_free(inseg.p);
/* give up our reference to inseg.p */
if (inseg.p != NULL)
{
pbuf_free(inseg.p);
inseg.p = NULL;
}
#if TCP_INPUT_DEBUG
#if TCP_DEBUG
tcp_debug_print_state(pcb->state);