[asterisk-bugs] [JIRA] (ASTERISK-22857) Deadlock: Locked Here: chan_iax2.c line 9756 (socket_read), when compiled with DEBUG_THREADS

[David Brillert (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-22857?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Brillert updated ASTERISK-22857:
--------------------------------------

    Status: Waiting for Feedback  (was: Waiting for Feedback)

No I haven't tested the patch.
Since I can't get Asterisk to give me a segfault with unoptimized backtraces no matter how I compile it.  And because I provided easy steps to reproduce by compiling with DEBUG_THREADS and installing a Digium IAXy. A registered and idle IAXy is enough to drive Asterisk crazy within a day or two.  You don't even have to load Asterisk with any traffic/channels.

Here is the relevant iax2.conf
[610]
type            =  friend
mohinterpret    =  default_default
mohsuggest      =  default_default
accountcode     =  610
amaflags        =  default
parkinglot      =  parkinglot_default
username        =  610
auth            =  md5
secret          =  scrubbed
requirecalltoken =  no
host            =  dynamic
language        =  en
cc_agent_policy =  generic
cc_monitor_policy =  generic
cc_offer_timer  =  20
callgroup       =  1
pickupgroup     =  1
dtmfmode        =  rfc2833
encryption      =  no
qualify         =  2000
transfer        =  no
trunk           =  no
disallow        =  all
allow           =  ulaw
allow           =  gsm
context         =  default-default
setvar          =  DYNAMIC_FEATURES=atxfer#fmcxfer#blindxfer#automon#automixmon#hookflash#supervisor#conference#automonmute
setvar          =  EXTCONTEXT=default-default
setvar          =  TRANSFER_CONTEXT=default-default
setvar          =  AUTO_RECORDING=610
setvar          =  MONITOR_OPTION=wW
setvar          =  INBOUND_GROUP=610 at INCOMING_default
setvar          =  SPYGROUP=default
                
> Deadlock: Locked Here: chan_iax2.c line 9756 (socket_read), when compiled with DEBUG_THREADS
> --------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-22857
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22857
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_iax2
>    Affects Versions: SVN, 11.6.0
>         Environment: 64 bit CentOS, 4GB RAM
>            Reporter: David Brillert
>            Assignee: David Brillert
>            Severity: Critical
>         Attachments: backtrace.txt, core show locks_gdb thread apply all bt full.txt, core show locks svn manual.txt, gdbcorebtbtfull.txt, iax2 debug.txt, valgrind.txt
>
>
> Full deadlock no call processing, no SIP traffic.
> GDB output DONT_OPTIMIZE DEBUG_THREADS BETTER_BACKTRACES thread apply all bt full.txt attached.  The deadlock occurred overnight while the system was idle.
> It is happening on multiple production servers.

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