30 Sep
2016
30 Sep
'16
6:34 p.m.
```
Reading symbols from kamailio...Reading symbols from
/usr/lib/debug/.build-id/10/824757bd1066806f2e19310929e17a9009a991.debug...done.
done.
[New LWP 5583]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/sbin/kamailio -f /etc/kamailio/proxy/kamailio.cfg -P
/var/run/kamailio/kam'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 xavp_get_internal (name=0x7f486b2f7568, list=<optimized out>, idx=0, prv=0x0) at
xavp.c:265
265 xavp.c: No such file or directory.
(gdb) bt
#0 xavp_get_internal (name=0x7f486b2f7568, list=<optimized out>, idx=0, prv=0x0) at
xavp.c:265
#1 0x00007f486306b8b3 in pv_get_xavp (msg=0x7f4866d8e5f0, param=0x7f486b2f7768,
res=0x7ffceb21ed90)
at pv_xavp.c:134
#2 0x000000000058f96e in pv_get_spec_value (msg=0x7f4866d8e5f0, sp=0x7f486b2f7750,
value=0x7ffceb21ed90) at pvapi.c:1307
#3 0x00007f479badb45d in lua_sr_pv_get (L=0x2b46aa0) at app_lua_sr.c:906
...
(gdb) f 3
#3 0x00007f479badb45d in lua_sr_pv_get (L=0x2b46aa0) at app_lua_sr.c:906
906 app_lua_sr.c: No such file or directory.
(gdb) p pvn
$5 = {s = 0x2c47588 "$xavp(caller_dom_prefs=>dummy)", len = 30}
(gdb) f 2
#2 0x000000000058f96e in pv_get_spec_value (msg=0x7f4866d8e5f0, sp=0x7f486b2f7750,
value=0x7ffceb21ed90) at pvapi.c:1307
1307 pvapi.c: No such file or directory.
(gdb) p sp
$6 = (pv_spec_p) 0x7f486b2f7750
(gdb) p *sp
$7 = {type = PVT_XAVP, getf = 0x7f486306b810 <pv_get_xavp>, setf = 0x7f486306c640
<pv_set_xavp>,
pvp = {pvn = {type = 1, nfree = 0x0, u = {isname = {type = 1798272592, name = {n = 0, s
= {
s = 0x0, len = 0}, re = 0x0}}, dname = 0x7f486b2f7650}}, pvi = {type = 0, u
= {
ival = 0, dval = 0x0}}}, trans = 0x0}
(gdb) f 1
#1 0x00007f486306b8b3 in pv_get_xavp (msg=0x7f4866d8e5f0, param=0x7f486b2f7768,
res=0x7ffceb21ed90)
at pv_xavp.c:134
134 pv_xavp.c: No such file or directory.
(gdb) p xname
$8 = (pv_xavp_name_t *) 0x7f486b2f7650
(gdb) p *xname
$9 = {name = {s = 0x7f486b2f77b6 "caller_dom_prefs=>dummy)", len = 16}, index
= {type = PVT_NONE,
getf = 0x0, setf = 0x0, pvp = {pvn = {type = 0, nfree = 0x0, u = {isname = {type = 0,
name = {
n = 0, s = {s = 0x0, len = 0}, re = 0x0}}, dname = 0x0}}, pvi = {type = 0, u
= {
ival = 0, dval = 0x0}}}, trans = 0x0}, next = 0x7f486b2f7568}
(gdb) p *xname->next
$10 = {name = {s = 0x7f486b2f77c8 "dummy)", len = 5}, index = {type = PVT_NONE,
getf = 0x0,
setf = 0x0, pvp = {pvn = {type = 0, nfree = 0x0, u = {isname = {type = 0, name = {n =
0, s = {
s = 0x0, len = 0}, re = 0x0}}, dname = 0x0}}, pvi = {type = 0, u = {ival =
0,
dval = 0x0}}}, trans = 0x0}, next = 0x0}
(gdb) p avp
$11 = <optimized out>
(gdb) p avp->val
value has been optimized out
(gdb) p avp->val.v
value has been optimized out
(gdb) p avp->val.v.xavp
value has been optimized out
```
Relevant code?
```
static sr_xavp_t *xavp_get_internal(str *name, sr_xavp_t **list, int idx, sr_xavp_t
**prv)
{
sr_xavp_t *avp;
unsigned int id;
int n = 0;
if(name==NULL || name->s==NULL)
return NULL;
id = get_hash1_raw(name->s, name->len);
if(list && *list)
avp = *list;
else
avp = *_xavp_list_crt;
while(avp)
{
if(avp->id==id && avp->name.len==name->len
&& strncmp(avp->name.s, name->s, name->len)==0)
{
if(idx==n)
return avp;
n++;
}
if(prv)
*prv = avp;
avp = avp->next;
}
return NULL;
}
```
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