[asterisk-bugs] [Asterisk 0016634]: asterisk crashes while fax sending

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
====================================================================== 
https://issues.asterisk.org/view.php?id=16634 
====================================================================== 
Reported By:                krn
Assigned To:                
====================================================================== 
Project:                    Asterisk
Issue ID:                   16634
Category:                   Channels/chan_sip/T.38
Reproducibility:            always
Severity:                   crash
Priority:                   normal
Status:                     acknowledged
Asterisk Version:           1.6.0.20 
JIRA:                       SWP-747 
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
====================================================================== 
Date Submitted:             2010-01-18 10:30 CST
Last Modified:              2010-01-26 16:07 CST
====================================================================== 
Summary:                    asterisk crashes while fax sending
Description: 
[general]
t38pt_udptl=yes
#next three lines makes no changes
t38pt_rtp=yes
t38pt_usertpsource=yes
faxdetect = yes

[provider]
type=peer
host=sip.provider.com
fromdomain=sip.provider.com
context=incoming-from-prov
port=5065
defaultuser=user
secret=password
fromuser=user
call-limit=10
canreinvite=yes
insecure=invite,port
nat=no
disallow=all
allow=ulaw
allow=alaw
dtmfmode=rfc2833

[IntUser]
type=friend
host=dynamic
context=office-internal
defaultuser=intuser
secret=password
callgroup=3
pickupgroup=3
callerid=103 User
canreinvite=yes
qualify=30000
call-limit=2
t38pt_udptl=yes
disallow=all
allow=ulaw
allow=alaw
t38pt_udptl=yes
faxdetect=yes
dtmfmode=rfc2833
nat=no

IntUser - ATA Linksys SPA2102 with fax attached
T.38 with reinvite, vad disabled, external non-firewalled ip

Messages before crash:
WARNING[11356]: udptl.c:766 calculate_far_max_ifp: (no tag): Cannot
calculate far_max_ifp before far_max_datagram has been set.
WARNING[11389]: udptl.c:725 calculate_local_max_datagram: (no tag): Cannot
calculate local_max_datagram before local_max_ifp has been set.
WARNING[11389]: udptl.c:766 calculate_far_max_ifp: (SIP/xxxxxxxxxxxxxx):
Cannot calculate far_max_ifp before far_max_datagram has been set.


====================================================================== 

---------------------------------------------------------------------- 
 (0117213) raivisr (reporter) - 2010-01-26 16:07
 https://issues.asterisk.org/view.php?id=16634#c117213 
---------------------------------------------------------------------- 
same crash in 1.6.2.243297 (latest 1.6.2 svn revision)

https://issues.asterisk.org/view.php?id=0  0x0815517e in ast_udptl_write (s=0x0,
f=0x0) at udptl.c:1074
1074		if (len > 0 && s->them.sin_port && s->them.sin_addr.s_addr) {
(gdb) bt full
https://issues.asterisk.org/view.php?id=0  0x0815517e in ast_udptl_write (s=0x0,
f=0x0) at udptl.c:1074
	seq = 0
	len = 186
	res = 0
	buf = 0x0
	__PRETTY_FUNCTION__ = "ast_udptl_write" 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2010-01-26 16:07 raivisr        Note Added: 0117213                          
======================================================================