28 Mar
2017
28 Mar
'17
1:15 p.m.
hello Daniel
it happened only once as far as i know, i tried to duplicate by myself
but i couldnt create the sipp scenario
i will try to duplicate it setting the octal parameters in hex escaped
by % in the SIP uris to see if i can, but i didnt have time yet
in the meantime here you have the information
(gdb) frame 6
#6 0x00000000004696c4 in dns_srv_sip_resolvehost (name=0x7f6906943188,
port=0x7fff120795e2, proto=0x7fff120795e1 "\001\330\023") at
dns_cache.c:2679
2679 he=dns_get_he(name, dns_flags);
(gdb) p *name
$1 = {s = 0x0, len = 0}
(gdb) p *port
$2 = 5080
thanks a lot and regards
david
El lun, 27-03-2017 a las 21:04 +0200, Daniel-Constantin Mierla escribió:
Hello,
did it happen only once, or it can be reproduced?
Can you also get from gdb:
frame 6
p *name
p *port
Cheers,
Daniel
On 27/03/2017 16:43, David Escartín Almudévar wrote:
hello Daniel
here you have
(gdb) frame 1
#1 0x000000000045b472 in _dns_hash_find (name=0x7f6906943188,
type=1, h=0x7fff120793cc, err=0x7fff120793ac) at dns_cache.c:535
535 *h=dns_hash_no(name->s, name->len, type);
(gdb) info locals
e = 0x7f69069015b8
tmp = 0x7f69069247e0
ret = 0x0
now = 689922868
cname_chain = 0
cname = {s = 0xab0e93 "Via: SIP/2.0/UDP \020?\337\v\234\262\264
\016 :5080;received=;rport=5080;branch=\020?\337\v\234\262\264\016
\r\nContent-Length: 0\r\n\r\n", len = 11210375}
__FUNCTION__ = "_dns_hash_find"
(gdb) list
530 cname_chain=0;
531 ret=0;
532 now=get_ticks_raw();
533 *err=0;
534 again:
535 *h=dns_hash_no(name->s, name->len, type);
536 #ifdef DNS_CACHE_DEBUG
537 LM_DBG("(%.*s(%d), %d), h=%d\n", name->len, name->s, name->len,
type, *h);
538 #endif
539 clist_foreach_safe(&dns_hash[*h], e, tmp, next){
thanks a lot and regards
david
El lun, 27-03-2017 a las 13:54 +0200, Daniel-Constantin Mierla
escribió:
--
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - Mar 6-8 (Europe) and Mar 20-22 (USA) - www.asipto.com
Kamailio World Conference - May 8-10, 2017 - www.kamailioworld.com Hello,
the backtrace is no longer matching the 4.4 branch code, as you
run an older release in that series.
Can you get with gdb from the core the output of the following
commands:
frame 1
info locals
list
and send them here on the mailing list.
Cheers,
Daniel
On 24/03/2017 14:50, David Escartín Almudévar wrote:
hello all, Daniel
checking the core with the gdb, we have checked the variables at
the frames of the backtrace, to try to get the full sip message
seems it seemed truncated.
checking the buf variable of the frame 11 which theorically
contains the sip msg to parse we have the string
SIP/2.0 487 Request Terminated\r\nFrom: \"881237046977
\"<sip:881237046977@79.170.68.185;user=phone>;tag=B7jgc8jQ4m5pB
\r\nTo:
<sip:5926053324@79.170.68.186:5060>;tag=e0d50be-13c4-58d47cba-a2ed9808-36fa\r\nl\337K\016\213\347:
\344\003\r\nCSeq: 104824272 INVITE\r\nVia: SIP/2.0/UDP
L\263\264\016\020?\337\v\234\262\264\016 ;branch=\327\f\340\r\nVia: SIP/2.0/UDP
\020?\337\v\234\262\264\016 :5080;received=;rport=5080;branch=\020?\337\v\234\262\264\016
\r\nContent-Length: 0\r\n\r\n
this is i guess how gdb parses the message, so i guess i cannot
introduce this like that in a xml sipp formal, since CRLF is
represented as \r\n, so others parts like l\337K\016\213\347:
\344\003 i have no idea what they are, because they also seem to
be out of the ASCII table ¿?
anycase, seems the message is very bad formed, and the kamailio
tries to resolve the host of the Via and it gets nothing, so the
function get_hash1_case_raw is fed by a nul value and seems that
the reason it crashes
hope you can retrieve information from that message to find out
what kind of message it exactly is and see if it's possible to
avoid kamailio's crash in this scenario
best regards
david
El vie, 24-03-2017 a las 12:10 +0100, David Escartín Almudévar
escribió:
> hello all
>
> we have experienced a crash and tracing the logs and the core,
> seems it was because a sip response from an endpoint.
> a UDP receiver (26248) crashed and the last message we see on
> it is a 487 quite bad formed
>
> Mar 24 01:58:02
> mia-proxy-inout-1-stby /usr/local/kamailio/sbin/kamailio[26248]: ERROR: tm
[t_lookup.c:1055]: t_check_msg(): ERROR: reply doesn't have a via, cseq or call-id
header
> Mar 24 01:58:17
> mia-proxy-inout-1-stby /usr/local/kamailio/sbin/kamailio[26230]: ALERT: <core>
[main.c:739]: handle_sigs(): child process 26248 exited by a signal 11
>
>
> the backtrace of the core
> (gdb) backtrace
> #0 0x0000000000457ab9 in get_hash1_case_raw (s=0x0, len=0) at
> hashes.h:210
> #1 0x000000000045b472 in _dns_hash_find (name=0x7f6906943188,
> type=1, h=0x7fff120793cc, err=0x7fff120793ac) at
> dns_cache.c:535
> #2 0x0000000000461285 in dns_hash_get (name=0x7f6906943188,
> type=1, h=0x7fff120793cc, err=0x7fff120793ac) at
> dns_cache.c:762
> #3 0x0000000000467194 in dns_get_entry (name=0x7f6906943188,
> type=1) at dns_cache.c:2102
> #4 0x0000000000468a05 in dns_a_get_he (name=0x7f6906943188)
> at dns_cache.c:2432
> #5 0x0000000000468bb9 in dns_get_he (name=0x7f6906943188,
> flags=1) at dns_cache.c:2505
> #6 0x00000000004696c4 in dns_srv_sip_resolvehost
> (name=0x7f6906943188, port=0x7fff120795e2,
> proto=0x7fff120795e1 "\001\330\023") at dns_cache.c:2679
> #7 0x000000000046aa37 in dns_sip_resolvehost
> (name=0x7f6906943188, port=0x7fff120795e2,
> proto=0x7fff120795e1 "\001\330\023") at dns_cache.c:2849
> #8 0x000000000049519e in update_sock_struct_from_via
> (to=0x7fff12079708, msg=0x7f69069a1dd8, via=0x7f69068f82a8) at
> forward.c:704
> #9 0x0000000000495ee5 in do_forward_reply
> (msg=0x7f69069a1dd8, mode=0) at forward.c:766
> #10 0x00000000004970af in forward_reply (msg=0x7f69069a1dd8)
> at forward.c:849
> #11 0x00000000005197ef in receive_msg (
> buf=0xab0d80 "SIP/2.0 487 Request Terminated\r\nFrom:
> \"8888888888
> \"<sip:8888888888@7.7.7.7;user=phone>;tag=B7jgc8jQ4m5pB\r\nTo:
>
<sip:555555555@8.8.8.8:5060>;tag=e0d50be-13c4-58d47cba-a2ed9808-36fa\r\nl\337K\016"...,
len=367, rcv_info=0x7fff12079a10) at receive.c:299
> #12 0x0000000000627b43 in udp_rcv_loop () at udp_server.c:495
> #13 0x00000000004b107a in main_loop () at main.c:1600
> #14 0x00000000004b842f in main (argc=13, argv=0x7fff12079fb8)
> at main.c:2616
>
>
> i have tried to duplicate the issue, but i dont know how to
> translate l\337K\016 to a xml notation
> i guess this is some weird that cannot be processed for
> kamailio
>
> could you please take a look and let me know if you know how
> to duplicate and fix this crash?
>
> thanks a lot and regards
> david
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--
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - Mar 6-8 (Europe) and Mar 20-22 (USA) - www.asipto.com
Kamailio World Conference - May 8-10, 2017 - www.kamailioworld.com
_______________________________________________
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sr-users(a)lists.sip-router.org
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