(gdb) backtrace
#0 0x007642b8 in strcasecmp () from /lib/tls/libc.so.6
#1 0xf6eb58c0 in build_peer (name=0x0, v=0x95fa370, realtime=0)
at chan_sip.c:9255
#2 0xf6eb67b0 in find_peer (peer=0x0, sin=0x9642fd4, realtime=1)
at chan_sip.c:1222
#3 0xf6ebea77 in check_user_full (p=0x9642e78, req=0xf6e9bb50,
cmd=0xf6e9bd64 "SUBSCRIBE", uri=0xf6e9bd6e "sip:[EMAIL PROTECTED]:5060",
reliable=0, sin=0xf6e9bb40, ignore=0, mailbox=0xf6e920a0 "",
mailboxlen=106) at chan_sip.c:5844
#4 0xf6ec3129 in handle_request (p=0x9642e78, req=0xf6e9bb50, sin=0xf6e9bb40,
recount=0x6a, nounlock=0xf6e9b9c8) at chan_sip.c:8384
#5 0xf6ec5281 in sipsock_read (id=0x960dc50, fd=13, events=1, ignore=0x0)
at chan_sip.c:8598
#6 0x0805378f in ast_io_wait (ioc=0x960dc10, howlong=106) at io.c:267
#7 0xf6ec89b2 in do_monitor (data=0x0) at chan_sip.c:8745
#8 0x008661d5 in start_thread () from /lib/tls/libpthread.so.0
#9 0x007c02da in clone () from /lib/tls/libc.so.6
(gdb)
I replaced my ip with the XXX.XXX.XXX.XXX. But it is my server ip.
==============================================================================================================================
Here is what is happening in the calls:
We call find peer with the first parameter NULL peer = find_peer(NULL, &p->recv, 1);
find_peer function tries to assign p. If p=NULL we send the peer variable to realtime which in the previous call was a NULL variable.
/*--- find_peer: Locate peer by name or ip address */
static struct sip_peer *find_peer(const char *peer, struct sockaddr_in *sin, int realtime)
{
struct sip_peer *p = NULL;
if (peer)
p = ASTOBJ_CONTAINER_FIND(&peerl,peer);
else
p = ASTOBJ_CONTAINER_FIND_FULL(&peerl,sin,name,sip_addr_hashfunc,1,sip_addrcmp);
if (!p && realtime) {
p = realtime_peer(peer, sin);
}return(p); }
In this code without doing any change to the peername variable we call build_peer with peername = NULL
static struct sip_peer *realtime_peer(const char *peername, struct sockaddr_in *sin)
{
struct sip_peer *peer=NULL;
struct ast_variable *var;
struct ast_variable *tmp;
/* First check on peer name */
if (peername)
var = ast_load_realtime("sippeers", "name", peername, NULL);
else if (sin) { /* Then check on IP address */
char iabuf[80]; ast_inet_ntoa(iabuf, sizeof(iabuf), sin->sin_addr);
var = ast_load_realtime("sippeers", "ipaddr", iabuf, NULL);
} else
return NULL; if (!var)
return NULL; tmp = var;
/* If this is type=user, then skip this object. */
while(tmp) {
if (!strcasecmp(tmp->name, "type") &&
!strcasecmp(tmp->value, "user")) {
ast_variables_destroy(var);
return NULL;
}
tmp = tmp->next;
}peer = build_peer(peername, var, ast_test_flag((&global_flags_page2), SIP_PAGE2_RTCACHEFRIENDS) ? 0 : 1);
Then Here we call ASTOBJ_CONTAINER_FIND_UNLINK(&peerl, name) with name = NULL, because name was previously peername = NULL
static struct sip_peer *build_peer(const char *name, struct ast_variable *v, int realtime)
{
struct sip_peer *peer = NULL;
struct ast_ha *oldha = NULL;
int maskfound=0;
int obproxyfound=0;
int found=0;
int format=0; /* Ama flags */
time_t regseconds;
char *varname = NULL, *varval = NULL;/
struct ast_variable *tmpvar = NULL;
if (!realtime)
/* Note we do NOT use find_peer here, to avoid realtime recursion */
peer = ASTOBJ_CONTAINER_FIND_UNLINK(&peerl, name);This macro makes a comparison of a Null variable, which leads to the segmentation fault.
#define ASTOBJ_CONTAINER_FIND_UNLINK(container,namestr) \
({ \
typeof((container)->head) found = NULL; \
typeof((container)->head) prev = NULL; \
ASTOBJ_CONTAINER_TRAVERSE(container, !found, do { \
if (!(strcasecmp(iterator->name, (namestr)))) { \
found = iterator; \
found->next[0] = NULL; \
ASTOBJ_CONTAINER_WRLOCK(container); \
if (prev) \
prev->next[0] = next; \
else \
(container)->head = next; \
ASTOBJ_CONTAINER_UNLOCK(container); \
} \
prev = iterator; \
} while (0)); \
found; \
})
=======================================================================================================================================
I also noticed that to be in find_peer realtime=1 because we called find_peer with 1 in the parameter. But then in buil_peer ASTOBJ_CONTAINER_FIND_UNLINK is called because realtime = 0. It is 0 because of ast_test_flag((&global_flags_page2), SIP_PAGE2_RTCACHEFRIENDS) ? 0 : 1);
Please any help, miss configuration from my part, whatever.... Let me know...
-- JO
-- Jose R. Ortiz Ubarri (CHEO), CS System Administrator / Programmer High Performance Computing facility - UPR Email: [EMAIL PROTECTED]|[EMAIL PROTECTED] Phone: 787-758-3054 Fax: 787-758-3058
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