[Serusers] ser crashes

Klaus Darilion darilion at ict.tuwien.ac.at
Wed Feb 5 12:13:59 CET 2003


Hello!

During playing around with route headers I discovered that ser crashes
reproduceable when I send the following request to it with sipsak, I
think the invite is a valid request with strict routing.

sipsak.exe -f invite3.txt -s sip:obelix.ict.tuwien.ac.at -vvv

invite3.txt:
INVITE sip:obelix.ict.tuwien.ac.at SIP/2.0
Via: SIP/2.0/UDP 128.131.80.191:5070;branch=z9hG4bK2024693217
Route: <sip:iptel.org>
Route: <sip:klaus3000 at klausix.ict.tuwien.ac.at>
From: <sip:brutus at obelix.ict.tuwien.ac.at>;tag=262992618
To: <sip:klaus3000 at iptel.org>
Call-ID: 744056460 at 128.131.80.191
CSeq: 20 INVITE
Contact: <sip:brutus at 128.131.80.191:5070>
max-forwards: 10
user-agent: oSIP/Linphone-0.9.1
Content-Type: application/sdp
Content-Length: 335  

..
sdp
..


then ser stops to respond:

>[root at obelix darilion]# /etc/init.d/ser status
>ser dead but subsys locked

and in /var/log/messages
Feb  5 11:57:21 obelix ser: Listening on 
Feb  5 11:57:21 obelix ser:               128.131.80.136
[128.131.80.136]::5060
Feb  5 11:57:21 obelix ser: Aliases: obelix.ict.tuwien.ac.at:5060 
Feb  5 11:57:21 obelix ser: ser startup succeeded
Feb  5 11:57:21 obelix /usr/sbin/ser[21426]: mod_init(): Database
connection opened successfuly 
Feb  5 11:57:21 obelix /usr/sbin/ser[21426]: INFO: udp_init: SO_RCVBUF
is initially 65535 
Feb  5 11:57:21 obelix /usr/sbin/ser[21426]: INFO: udp_init: SO_RCVBUF
is finally 131070 
Feb  5 11:57:21 obelix /usr/sbin/ser[21432]: INFO: fifo process
starting: 21432 
Feb  5 11:57:21 obelix /usr/sbin/ser[21432]: SER: open_uac_fifo: fifo
server up at /tmp/ser_fifo... 

..up to here everything works fine, than I send the request:

Feb  5 11:57:30 obelix /usr/sbin/ser[21428]: BUG: qm_*: fragm.
0x422b9ad0 end overwritten(35322e64, 39306665)! 
Feb  5 11:57:30 obelix /usr/sbin/ser[21426]: child process 21428 exited
by a signal 11 
Feb  5 11:57:30 obelix /usr/sbin/ser[21426]: core was not generated 
Feb  5 11:57:30 obelix /usr/sbin/ser[21426]: INFO: terminating due to
SIGCHLD 

Here is the ngrep output:

U 128.131.80.101:1558 -> 128.131.80.136:5060
  INVITE sip:obelix.ict.tuwien.ac.at SIP/2.0..Via: SIP/2.0/UDP
klausix.ict.tuwien.ac.at:1557..Via: SIP/2.0/UDP
128.131.80.191:5070;branch=z9hG4bK2024693217..Route: <sip:iptel.
  org>..Route: <sip:klaus3000 at klausix.ict.tuwien.ac.at>..From:
<sip:brutus at obelix.ict.tuwien.ac.at>;tag=262992618..To:
<sip:klaus3000 at iptel.org>..Call-ID: 744056460 at 128.131.80
  .191..CSeq: 20 INVITE..Contact:
<sip:brutus at 128.131.80.191:5070>..max-forwards: 10..user-agent:
oSIP/Linphone-0.9.1..Content-Type: application/sdp..Content-Length: 335
....
  v=0..o=brutus 123456 654321 IN IP4 128.131.80.191..s=A
c..onversation..c=IN IP4 128.131.80.191..t=0 0..m=audio 7078 RTP/AVP 3
115 8 110 111 101..a=rtpmap:3 gsm/8000/1..a=rtp
  map:115 lpc10-1.5/8000/1..a=rtpmap:8 PCMA/8000/1..a=rtpmap:110
speex-4/8000/1..a=rtpmap:111 speex_lbr-4/8000/1..a=rtpmap:101
telephone-event/8000..a=fmtp:101 0-11..         
#
U 128.131.80.136:5060 -> 128.131.80.101:1557
  SIP/2.0 100 trying -- your call is important to us..Via: SIP/2.0/UDP
klausix.ict.tuwien.ac.at:1557..Via: SIP/2.0/UDP
128.131.80.191:5070;branch=z9hG4bK2024693217..From: <sip
  :brutus at obelix.ict.tuwien.ac.at>;tag=262992618..To:
<sip:klaus3000 at iptel.org>..Call-ID: 744056460 at 128.131.80.191..CSeq: 20
INVITE..Server: Sip EXpress router (0.8.10 (i386/l
  inux))..Content-Length: 0..Warning: 392 128.131.80.136:5060 "Noisy
feedback tells: pid=21552 req_src_ip=128.131.80.101
in_uri=sip:obelix.ict.tuwien.ac.at out_uri=sip:iptel.o
  rg via_cnt==2"....

#
U 128.131.80.136:5060 -> 195.37.77.101:5060
  INVITE sip:iptel.org SIP/2.0..Via: SIP/2.0/UDP
128.131.80.136;branch=z9hG4bK3a6d.25ef09d1.0..Via: SIP/2.0/UDP
klausix.ict.tuwien.ac.at:1557..Via: SIP/2.0/UDP 128.131.80.191:
  5070;branch=z9hG4bK2024693217..Route:
<sip:klaus3000 at klausix.ict.tuwien.ac.at>..From:
<sip:brutus at obelix.ict.tuwien.ac.at>;tag=262992618..To:
<sip:klaus3000 at iptel.org>..Call
  -ID: 744056460 at 128.131.80.191..CSeq: 20 INVITE..Contact:
<sip:brutus at 128.131.80.191:5070>..max-forwards: 9 ..user-agent:
oSIP/Linphone-0.9.1..Content-Type: application/sdp..
  Content-Length: 335  ....v=0..o=brutus 123456 654321 IN IP4
128.131.80.191..s=A c..onversation..c=IN IP4 128.131.80.191..t=0
0..m=audio 7078 RTP/AVP 3 115 8 110 111 101..a=r
  tpmap:3 gsm/8000/1..a=rtpmap:115 lpc10-1.5/8000/1..a=rtpmap:8
PCMA/8000/1..a=rtpmap:110 speex-4/8000/1..a=rtpmap:111
speex_lbr-4/8000/1..a=rtpmap:101 telephone-event/8000..a
  =fmtp:101 0-11..

#
U 195.37.77.101:5060 -> 128.131.80.136:5060
  SIP/2.0 407 Proxy Authentication Required..Via: SIP/2.0/UDP
128.131.80.136;branch=z9hG4bK3a6d.25ef09d1.0..Via: SIP/2.0/UDP
klausix.ict.tuwien.ac.at:1557..Via: SIP/2.0/UDP 12
  8.131.80.191:5070;branch=z9hG4bK2024693217..From:
<sip:brutus at obelix.ict.tuwien.ac.at>;tag=262992618..To:
<sip:klaus3000 at iptel.org>;tag=fb86ad2694115d75c77dce61523c9f07.3f3c
  ..Call-ID: 744056460 at 128.131.80.191..CSeq: 20
INVITE..Proxy-Authenticate: Digest realm="iptel.org",
nonce="3e40f29900000000d6e1790446755f1b4b96f5f5bd97b283",
algorithm=MD5..
  Server: Sip EXpress router (0.8.9 (i386/linux))..Content-Length:
0..Warning: 392 195.37.77.101:5060 "Noisy feedback tells: pid=7651
req_src_ip=128.131.80.136 in_uri=sip:ipte
  l.org out_uri=sip:klaus3000 at klausix.ict.tuwien.ac.at via_cnt==3"....

#
U 128.131.80.136:5060 -> 128.131.80.101:1557
  SIP/2.0 407 Proxy Authentication Required..Via: SIP/2.0/UDP
klausix.ict.tuwien.ac.at:1557..Via: SIP/2.0/UDP
128.131.80.191:5070;branch=z9hG4bK2024693217..From: <sip:brutus at o
  belix.ict.tuwien.ac.at>;tag=262992618..To:
<sip:klaus3000 at iptel.org>;tag=fb86ad2694115d75c77dce61523c9f07.3f3c..Cal
l-ID: 744056460 at 128.131.80.191..CSeq: 20 INVITE..Proxy-Aut
  henticate: Digest realm="iptel.org",
nonce="3e40f29900000000d6e1790446755f1b4b96f5f5bd97b283",
algorithm=MD5..Server: Sip EXpress router (0.8.9
(i386/linux))..Content-Length
  : 0..Warning: 392 195.37.77.101:5060 "Noisy feedback tells: pid=7651
req_src_ip=128.131.80.136 in_uri=sip:iptel.org
out_uri=sip:klaus3000 at klausix.ict.tuwien.ac.at via_cnt==3
  "....

#
U 128.131.80.136:5060 -> 195.37.77.101:5060
  ACK sip:iptel.org SIP/2.0..Via: SIP/2.0/UDP
128.131.80.136;branch=z9hG4bK3a6d.25ef09d1.0..From:
<sip:brutus at obelix.ict.tuwien.ac.at>;tag=262992618..Call-ID:
744056460 at 128.13
  1.80.191..To:
<sip:klaus3000 at iptel.org>;tag=fb86ad2694115d75c77dce61523c9f07.3f3c..CSe
q: 20 ACK..                       



If you need more details please let me know.

regards,
Klaus



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