asterisk users - Mar 2016 - Abandoned SIP-TCP connection causes Asterisk to crash

Hi All,

We are using SIP over TCP transport but often we got an Asterisk crash with
following error.

[Mar  1 11:23:13] WARNING[1509]: chan_sip.c:3755 __sip_xmit: sip_xmit of
0x7f294000cac0 (len 680) to Soft.Phone.IP.Address:56780 returned -2:
Interrupted system call
....
Asterisk uncleanly ending (0).
Executing last minute cleanups
  == Destroying musiconhold processes
  == Manager unregistered action DBGet
  == Manager unregistered action DBPut
  == Manager unregistered action DBDel
  == Manager unregistered action DBDelTree

We have tested this issue with Asterisk 11.20 and it can be reproduced as
following

1. From client workstation / labptop register a softphone with Asterisk
over TCP
2. Dial into some local asterisk extension. (i.e play voice message in loop
)
3. From client side kill the softphone i.e ( killall zoiper )
4. Wait some time, Asterisk will crash....

Further we are unable to get any coredump ! (even running with -g) Any help
will be appreciated.

Thanks in advance

Nasir Iqbal

ICTBroadcast - an Auto Dialer software for ITSP
<https://www.ictbroadcast.com/how-become-internet-telephony-service-provider-itsp-using-ictbroadcast-sp-edition>
SMS, Fax and Voice broadcasting & Inbound / Outbound Campaigns
http://www.ictbroadcast.com/
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Nasir Iqbal wrote:
> Hi All,
>
> We are using SIP over TCP transport but often we got an Asterisk crash
> with following error.
>
> [Mar  1 11:23:13] WARNING[1509]: chan_sip.c:3755 __sip_xmit: sip_xmit of
> 0x7f294000cac0 (len 680) to Soft.Phone.IP.Address:56780 returned -2:
> Interrupted system call
> ....
> Asterisk uncleanly ending (0).
> Executing last minute cleanups
>    == Destroying musiconhold processes
>    == Manager unregistered action DBGet
>    == Manager unregistered action DBPut
>    == Manager unregistered action DBDel
>    == Manager unregistered action DBDelTree
Interestingly this doesn't appear as though it's a crash. Whatever is 
happening is causing Asterisk to then shutdown normally.
>
> We have tested this issue with Asterisk 11.20 and it can be reproduced
> as following
>
> 1. From client workstation / labptop register a softphone with Asterisk
> over TCP
> 2. Dial into some local asterisk extension. (i.e play voice message in
> loop )
> 3. From client side kill the softphone i.e ( killall zoiper )
> 4. Wait some time, Asterisk will crash....
Please file an issue[1] for this so we can narrow down the problem. I'm 
not aware of any currently open and I don't think I've seen it.

[1] https://issues.asterisk.org/jira

-- 
Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org