15 Nov
2016
15 Nov
'16
11:55 a.m.
The pinging from the dispatcher module segfaults and then kamailio exits. It used to work
on kamailio 4.4.3.
*dispatcher.list*
```
31 sip:10.0.20.191:5062;transport=udp 8 0 socket=udp:10.0.20.193:5021
```
*debug logging*
```
21(2188) DEBUG: dispatcher [dispatch.c:2872]: ds_ping_set(): probing set #31, URI
sip:10.0.20.191:5062;transport=udp
21(2188) DEBUG: <core> [socket_info.c:559]: grep_sock_info(): checking if host==us:
11==11 && [10.0.20.193] == [10.0.20.193]
21(2188) DEBUG: <core> [socket_info.c:566]: grep_sock_info(): checking if port 5021
(advertise 0) matches port 5021
21(2188) DEBUG: tm [uac.c:411]: t_uac_prepare(): DEBUG:tm:t_uac:
next_hop=<sip:10.0.20.191:5062;transport=udp>
21(2188) DEBUG: tm [uac.c:152]: dlg2hash(): DEBUG: dlg2hash: 37511
21(2188) DEBUG: tm [uac.c:616]: send_prepared_request_impl(): send_prepared_request_impl:
uac: 0x7ff37f776380 branch: 0 to 10.0.20.191:5062
0(2167) ALERT: <core> [main.c:743]: handle_sigs(): child process 2188 exited by a
signal 11
0(2167) INFO: <core> [main.c:759]: handle_sigs(): terminating due to SIGCHLD
```
Please let me know if you need more information.
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15 Nov
15 Nov
12:03 p.m.
``kamailio -V`` and some related gdb output from the coredump would be nice
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12:06 p.m.
```
$ kamailio -V
version: kamailio 5.0.0-dev7 (x86_64/linux)
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, DISABLE_NAGLE, USE_MCAST,
DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC,
DBG_SR_MEMORY, 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: unknown
compiled with gcc 5.3.1
```
From the coredump:
```
#0 0x00007f7078e1715a in ?? () from /usr/lib/x86_64-linux-gnu/kamailio/modules/tm.so
#1 0x00007f7078e1bf00 in ?? () from /usr/lib/x86_64-linux-gnu/kamailio/modules/tm.so
#2 0x00007f7078e22a37 in t_uac_with_ids () from
/usr/lib/x86_64-linux-gnu/kamailio/modules/tm.so
#3 0x00007f7078e271d7 in request () from
/usr/lib/x86_64-linux-gnu/kamailio/modules/tm.so
#4 0x00007f7076076db1 in ds_ping_set () from
/usr/lib/x86_64-linux-gnu/kamailio/modules/dispatcher.so
#5 0x00007f7076076c00 in ds_ping_set () from
/usr/lib/x86_64-linux-gnu/kamailio/modules/dispatcher.so
#6 0x00007f7076076c00 in ds_ping_set () from
/usr/lib/x86_64-linux-gnu/kamailio/modules/dispatcher.so
#7 0x0000000000474c27 in ?? ()
#8 0x000000000047b518 in slow_timer_main ()
#9 0x00000000004ec4a8 in main_loop ()
#10 0x000000000041d31d in main ()
```
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12:30 p.m.
Here is the actual debug output :-)
```
#0 run_onsend (orig_msg=orig_msg@entry=0x0, dst=dst@entry=0x7f70720bde60,
buf=<optimized out>, len=<optimized out>) at ../../onsend.h:80
onsnd_info = {to = 0x7f70720bde68, send_sock = 0x7f707a285ba8,
buf = 0x7f70720bf2a8 "OPTIONS sip:10.0.20.191:5062;transport=udp
SIP/2.0\r\nVia: SIP/2.0/UDP 10.0.20.193:5021;branch=z9hG4bK673d.161b70b", '0'
<repeats 25 times>, ".0\r\nTo:
<sip:10.0.20.191:5062;transport=udp>\r\nFrom: <sip:dispat"...,
len = 411, msg = 0x0}
ret = 1
ra_ctx = {rec_lev = 1913380352, run_flags = 32624, last_retcode = 48, jmp_env =
{{__jmpbuf = {140730243347504, 140730243347248, 140730243348000, 140120926445056, 54134,
21, 26318, 7368058}, __mask_was_saved = 1913380448, __saved_mask = {
__val = {0, 140730243347552, 140730243347704, 7368058, 21,
140120926445072, 10875460, 140121027388988, 140121062554736, 4294967295, 4294967295,
140120926350396, 21, 411, 140120926450344, 10877216}}}}}
bctx = <optimized out>
backup_route_type = 1
fwd_snd_flags_bak = <optimized out>
rpl_snd_flags_bak = <optimized out>
keng = 0x0
#1 0x00007f7078e1bf00 in send_prepared_request_impl (request=<optimized out>,
retransmit=retransmit@entry=1, branch=branch@entry=0) at uac.c:618
t = 0x7f70720bdbf8
p_msg = 0x0
uac = 0x7f70720bde00
ip = {af = 2, len = 4, u = {addrl = {3205758986, 140730243347728}, addr32 =
{3205758986, 0, 1344926992, 32766}, addr16 = {10, 48916, 0, 0, 62736, 20521, 32766, 0},
addr = "\n\000\024\277\000\000\000\000\020\365)P\376\177\000"}}
ret = <optimized out>
__func__ = "send_prepared_request_impl"
#2 0x00007f7078e22a37 in t_uac_with_ids (uac_r=uac_r@entry=0x7ffe5029f620,
ret_index=ret_index@entry=0x0, ret_label=ret_label@entry=0x0) at uac.c:683
request = 0x7f70720bde10
cell = 0x7f70720bdbf8
ret = 1
is_ack = <optimized out>
branch_ret = <optimized out>
i = 0
added_branches = 1
#3 0x00007f7078e22b29 in t_uac (uac_r=uac_r@entry=0x7ffe5029f620) at uac.c:658
No locals.
#4 0x00007f7078e271d7 in request (uac_r=0x7ffe5029f620, ruri=<optimized out>,
to=<optimized out>, from=<optimized out>, next_hop=<optimized out>) at
uac.c:1005
callid = {s = 0x7f70790a6700 <callid_buf>
"16f83c1827128151-26318(a)10.0.20.193".193", len = 34}
fromtag = {s = 0x7f70790a65e0 <from_tag>
"67a6bee51647e3e1ce6833e5724e26f7-c9ed", len = 37}
dialog = 0x7f70720bd868
res = <optimized out>
__func__ = "request"
#5 0x00007f7076076db1 in ds_ping_set (node=0x7f70720a5620) at dispatch.c:2887
uac_r = {method = 0x7f70762975b0 <ds_ping_method>, headers = 0x0, body =
0x0, ssock = 0x7f70720a41f0, dialog = 0x7f70720bd868, cb_flags = 1024, cb = 0x7f707607fb80
<ds_options_callback>, cbp = 0x1f, callid = 0x0}
i = 2
j = 0
__func__ = "ds_ping_set"
#6 0x00007f7076076c00 in ds_ping_set (node=0x7f70720a5c08) at dispatch.c:2863
uac_r = {method = 0x0, headers = 0x0, body = 0xffffffffffff0000, ssock =
0xffffffffffffffff, dialog = 0x0, cb_flags = 0, cb = 0x0, cbp = 0x0, callid = 0x0}
i = 1
j = <optimized out>
__func__ = "ds_ping_set"
#7 0x00007f7076076c00 in ds_ping_set (node=0x7f70720a3df0) at dispatch.c:2863
uac_r = {method = 0xffffffff, headers = 0x706d7a, body = 0x7f7075e39d80, ssock =
0x15, dialog = 0x6bca4aae, cb_flags = 5169481, cb = 0xaaa6c0 <is_ctx>, cbp =
0x7f707aa6ed96 <srandom_r+198>, callid = 0x0}
i = 1
j = <optimized out>
__func__ = "ds_ping_set"
```
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12:49 p.m.
This looks like an issue introduced by 2f080bd3af63678b900f9f537afbd187007eb089 by @gaaf .
Being a local generated request, there is no incoming one and orig_msg==NULL (0x00). Some
more checks need to be added there or a fake request has to be created.
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1:43 p.m.
I have no time now to investigate the difference between what dispatcher does vs the uac
module.
Quickest fix now is probably to skip onsend if there is no orig_msg.
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3:06 p.m.
I'm not familiar with the uac module so I can't help with that. If the quick fix
mentioned by @gaaf is fine I'll submit a PR.
BTW, if you don't use `onsend_route` everything works as expected.
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17 Nov
17 Nov
12:35 p.m.
Fixed with 9a1547e8815e697351b0795bb3b4e308e5440a6d
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12:35 p.m.
Closed #859.
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1:56 p.m.
Thanks!
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2927
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participants (4)
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Alex Hermann -
Daniel-Constantin Mierla
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Timmo Verlaan
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Victor Seva