[SR-Users] Kamailio crashing after comparing AVP with string
Jurijs Ivolga
jurij.ivo at gmail.com
Thu Jan 7 16:04:18 CET 2016
Hi all!
To follow-up on this issue, I created sample config file which is killing
Kamailio. :)
Please find in attachment kamailio config and dispatcher config file.
To crash kamailio dispatcher list file should contain at least 2 records
and all destinations(It looks like it is enough even if 1 destination are
unavaillable) should not be available. I tested with dispatcher list in DB
and same result.
If we remove attribute bla, from dispatcher list then kamailio is not
crashing:
1 sip:192.168.5.233:5060;transport=udp 2 0
1 sip:192.168.5.232:5060;transport=udp 2 0
I believe this is rare case, but I think it is a bug. :)
Please help. :)
Thank you!
With kind regards,
Jurijs
2015-12-17 12:25 GMT+02:00 Jurijs Ivolga <jurij.ivo at gmail.com>:
> Hi,
>
> Just quick question, before sending some more debug info.
>
> I just figured out that issue is related to dispatcher list, I'm using
> text file. Following dispatcher list do not work:
>
> 1 sip:1.1.1.1;transport=udp 0 0 bla
> 1 sip:2.2.2.2;transport=udp 0 0 blabla
>
> But if I use below one, it works without any issue:
>
> 1 sip:1.1.1.1;transport=udp 0 0
> 1 sip:2.2.2.2;transport=udp 0 0
>
> Maybe my attributes are incorrect?
>
> With kind regards,
>
> Jurijs
>
>
>
> 2015-12-17 10:45 GMT+02:00 Daniel-Constantin Mierla <miconda at gmail.com>:
>
>> Hello,
>>
>> reproduce the case with 'ulimit -c unlimited' executed in the terminal
>> before starting kamailio. You should get a corefile and then get the output
>> of 'bt full' in the gdb (gdb /path/to/kamailio /path/to/corefile). Send the
>> output here to investigate it.
>>
>> Cheers,
>> Daniel
>>
>> On 17/12/15 09:41, Jurijs Ivolga wrote:
>>
>> Hi,
>>
>> I have weird behavior, when I'm trying to compare AVP with string:
>>
>> if ($avp(AVP_ATTRS) != "bla") {
>> ds_next_dst();
>> }
>>
>> $avp(AVP_ATTRS) contains Dispatcher attribute.
>>
>> Kamailio crashes:
>>
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4844]: CRITICAL: <core>
>> [pass_fd.c:275]: receive_fd(): EOF on 15
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4810]: ALERT: <core>
>> [main.c:728]: handle_sigs(): child process 4816 exited by a signal 11
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4810]: ALERT: <core>
>> [main.c:731]: handle_sigs(): core was not generated
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4810]: INFO: <core>
>> [main.c:743]: handle_sigs(): terminating due to SIGCHLD
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4843]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4842]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4841]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4840]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4839]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4838]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4837]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4836]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4835]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4834]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4829]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4814]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4815]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4823]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4813]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4821]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4812]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4818]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4825]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4819]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4822]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4844]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>> Dec 17 03:39:30 /usr/local/sbin/kamailio[4830]: INFO: <core>
>> [main.c:798]: sig_usr(): signal 15 received
>>
>> Following code works fine:
>>
>> if ($avp(AVP_ATTRS) == "bla") {
>> ds_next_dst();
>> }
>>
>> Kamailio version:
>>
>> version: kamailio 4.3.4 (x86_64/linux) a56227
>> flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS,
>> DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC,
>> DBG_QM_MALLOC, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE,
>> USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
>> ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16,
>> MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
>> poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
>> id: a56227
>> compiled on 03:29:23 Dec 17 2015 with gcc 4.4.7
>>
>> Thak you!
>>
>> With kind regards,
>>
>> Jurijs
>>
>>
>> _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing listsr-users at lists.sip-router.orghttp://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>
>>
>> --
>> Daniel-Constantin Mierlahttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>> Book: SIP Routing With Kamailio - http://www.asipto.comhttp://miconda.eu
>>
>>
>> _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>> sr-users at lists.sip-router.org
>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>
>>
>
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1 sip:192.168.5.233:5060;transport=udp 2 0 bla
1 sip:192.168.5.232:5060;transport=udp 2 0 bla
-------------- next part --------------
#!KAMAILIO
#
# sample config file for dispatcher module
# - load balancing of VoIP calls with round robin
# - no TPC listening
# - don't dispatch REGISTER and presence requests
#
# Kamailio (OpenSER) SIP Server v3.2
# - web: http://www.kamailio.org
# - git: http://sip-router.org
#
# Direct your questions about this file to: sr-users at lists.sip-router.org
#
# Refer to the Core CookBook at http://www.kamailio.org/dokuwiki/doku.php
# for an explanation of possible statements, functions and parameters.
#
# Several features can be enabled using '#!define WITH_FEATURE' directives:
#
# *** To run in debug mode:
# - define WITH_DEBUG
#
#!ifndef DBURL
#!define DBURL "mysql://kamailio:kamailiorw@localhost/kamailio"
#!endif
####### Global Parameters #########
#!ifdef WITH_DEBUG
debug=4
log_stderror=yes
#!else
debug=2
log_stderror=no
#!endif
#!define FLT_FS 10
memdbg=5
memlog=5
log_facility=LOG_LOCAL0
fork=yes
children=4
/* comment the next line to enable TCP */
disable_tcp=yes
/* uncomment the next line to disable the auto discovery of local aliases
based on revers DNS on IPs (default on) */
auto_aliases=no
/* add local domain aliases */
# alias="mysipserver.com"
port=5060
/* uncomment and configure the following line if you want Kamailio to
bind on a specific interface/port/proto (default bind on all available) */
# listen=udp:127.0.0.1:5060
sip_warning=no
####### Modules Section ########
#set module path
mpath="/usr/local/lib64/kamailio/modules/"
loadmodule "db_mysql.so"
loadmodule "mi_fifo.so"
loadmodule "kex.so"
loadmodule "tm.so"
loadmodule "tmx.so"
loadmodule "sl.so"
loadmodule "rr.so"
loadmodule "pv.so"
loadmodule "maxfwd.so"
loadmodule "textops.so"
loadmodule "siputils.so"
loadmodule "xlog.so"
loadmodule "sanity.so"
loadmodule "ctl.so"
loadmodule "mi_rpc.so"
loadmodule "acc.so"
loadmodule "path.so"
loadmodule "dispatcher.so"
# ----------------- setting module-specific parameters ---------------
# ----- mi_fifo params -----
modparam("mi_fifo", "fifo_name", "/var/run/kamailio/kamailio_fifo")
# ----- rr params -----
# add value to ;lr param to cope with most of the UAs
modparam("rr", "enable_full_lr", 1)
# do not append from tag to the RR (no need for this script)
modparam("rr", "append_fromtag", 0)
# ----- acc params -----
modparam("acc", "log_flag", 1)
modparam("acc", "failed_transaction_flag", 3)
modparam("acc", "log_extra",
"src_user=$fU;src_domain=$fd;dst_ouser=$tU;dst_user=$rU;dst_domain=$rd;src_ip=$si")
# ----- tm params -----
modparam("tm", "fr_timer", 2000)
modparam("tm", "fr_inv_timer", 40000)
# ----- dispatcher params -----
#modparam("dispatcher", "db_url", DBURL)
#modparam("dispatcher", "table_name", "dispatcher")
modparam("dispatcher", "list_file", "/usr/local/etc/kamailio/dispatcher.lst")
modparam("dispatcher", "flags", 2)
modparam("dispatcher", "dst_avp", "$avp(AVP_DST)")
modparam("dispatcher", "grp_avp", "$avp(AVP_GRP)")
modparam("dispatcher", "cnt_avp", "$avp(AVP_CNT)")
modparam("dispatcher", "sock_avp", "$avp(dssocket)")
modparam("dispatcher", "attrs_avp", "$avp(dsattrs)")
modparam("path", "use_received", 1)
####### Routing Logic ########
# main request routing logic
route {
# per request initial checks
route(REQINIT);
if(ds_is_from_list())
{
setflag(FLT_FS);
}
# handle requests within SIP dialogs
route(WITHINDLG);
### only initial requests (no To tag)
# CANCEL processing
if (is_method("CANCEL"))
{
if (t_check_trans())
t_relay();
exit;
}
t_check_trans();
if (isflagset(FLT_FS)) {
route(FROM_FS);
exit;
}
# record routing for dialog forming requests (in case they are routed)
# - remove preloaded route headers
remove_hf("Route");
if (is_method("INVITE|SUBSCRIBE"))
record_route();
# account only INVITEs
if (is_method("INVITE"))
{
setflag(1); # do accounting
}
# handle presence related requests
route(PRESENCE);
# handle registrations
route(REGISTRAR);
if ($rU==$null)
{
# request with no Username in RURI
sl_send_reply("484","Address Incomplete");
exit;
}
# dispatch destinations
route(DISPATCH);
}
route[FROM_FS]
{
record_route();
route(RELAY);
exit;
}
route[RELAY] {
if (!t_relay()) {
sl_reply_error();
}
exit;
}
# Per SIP request initial checks
route[REQINIT] {
if (!mf_process_maxfwd_header("10")) {
sl_send_reply("483","Too Many Hops");
exit;
}
if(!sanity_check("1511", "7"))
{
xlog("Malformed SIP message from $si:$sp\n");
exit;
}
}
# Handle requests within SIP dialogs
route[WITHINDLG] {
if (has_totag()) {
# sequential request withing a dialog should
# take the path determined by record-routing
if (loose_route()) {
if (is_method("BYE")) {
setflag(1); # do accounting ...
setflag(3); # ... even if the transaction fails
}
route(RELAY);
} else {
if (is_method("SUBSCRIBE") && uri == myself) {
# in-dialog subscribe requests
route(PRESENCE);
exit;
}
if ( is_method("ACK") ) {
if ( t_check_trans() ) {
# non loose-route, but stateful ACK;
# must be ACK after a 487 or e.g. 404 from upstream server
t_relay();
exit;
} else {
# ACK without matching transaction ... ignore and discard.
exit;
}
}
sl_send_reply("404","Not here");
}
exit;
}
}
# Handle SIP registrations
route[REGISTRAR] {
if(!is_method("REGISTER"))
return;
add_path_received();
route(DISPATCH);
}
# Presence server route
route[PRESENCE] {
if(!is_method("PUBLISH|SUBSCRIBE"))
return;
sl_send_reply("404", "Not here");
exit;
}
# Dispatch requests
route[DISPATCH] {
# round robin dispatching on gateways group '1'
if(!ds_select_dst("1", "2"))
{
send_reply("404", "No destination");
exit;
}
xlog("L_NOTICE", " ===> All dispatcher destinations $(avp(AVP_DST)[*]), amount of dispatchers $cnt($avp(AVP_DST))\n");
xlog("L_NOTICE", " ===> Attribute $avp(dsattrs)\n");
xlog("L_DBG", "--- SCRIPT: going to <$ru> via <$du>\n");
t_on_failure("RTF_DISPATCH");
route(RELAY);
exit;
}
# Sample failure route
failure_route[RTF_DISPATCH] {
if (t_is_canceled()) {
exit;
}
# next DST - only for 500 or local timeout
if (t_check_status("500")
or (t_branch_timeout() and !t_branch_replied()))
{
if(ds_next_dst())
{
t_on_failure("RTF_DISPATCH");
route(RELAY);
exit;
}
}
}
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