[Devel] nathelper coredump ;(

[Ingo Wolfsberger]

Hi

I have a "strange" nathelper problem:
With one contact in the location db it works ok, with 2 contacts (they are
nearly the same) ser crashes in the natpinger.

Program terminated with signal 11, Segmentation fault.
(gdb) backtrace
#0  nh_timer (ticks=5, param=0x0) at nathelper.c:2040
#1  0x08088469 in timer_ticker () at timer.c:141
#2  0x08062c12 in main_loop () at main.c:1093
#3  0x080644eb in main (argc=15, argv=0xbfe4f204) at main.c:1564


nathelper.c:
---sip---
        while (1) {
                LOG(L_ERR, "nathelper: in while\n");
                memcpy(&(c.len), cp, sizeof(c.len));
                if (c.len == 0)
                        break;
                c.s = (char*)cp + sizeof(c.len);
                cp =  (char*)cp + sizeof(c.len) + c.len;
line 240        memcpy( &send_sock, cp, sizeof(send_sock));
                cp += sizeof(send_sock);
                memcpy( &flags, cp, sizeof(flags));
                cp += sizeof(flags);
---snap---

The second time in while it crashes, cp does not seem to be valid.
Currently I have no idea why. This part of the codes has not been changed
for a while.
The problem occurs regardless if I use sip_natping or not.

bye,
   Ingo

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