[SR-Users] Problems investigating a crash in the siptrace module (4.3.1)

[Daniel-Constantin Mierla]

Hello,

maybe the coredump got corrupted. Was it opened with other applications?

Can you reproduce the issue? Any error log messages before the crash?

Cheers,
Daniel

On 13/08/15 11:57, Sven Neuhaus wrote:
> Hi,
>
> we're experiencing crashes in the siptrace.so module with Kamailio
> 4.3.1. I looked at the core dump with gdb but it complained about
> missing debugging symbols so all I could see was that it called
> do_action() before branching into an unknown function in the siptrace
> module.
>
> I then installed the kamailio-dbg package to get the debugging symbols.
> This had the weird effect that get the error "Cannot access memory at
> ..." in GDB and no longer see *any* function names (previously only the
> names in the siptrace module were missing.
>
> Any idea whats going on?
>
> # gdb /usr/sbin/kamailio core
> GNU gdb (GDB) 7.4.1-debian
> Copyright (C) 2012 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-linux-gnu".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> Reading symbols from /usr/sbin/kamailio...Reading symbols from
> /usr/lib/debug/.build-id/e7/8dc57031d294f320b360d8f2f875a005db757e.debug...done.
> done.
> [New LWP 31426]
> Cannot access memory at address 0x3840f881f9c13908
> Cannot access memory at address 0x3840f881f9c13900
> (gdb) list
> 1771	main.c: No such file or directory.
> (gdb) info threads
>   Id   Target Id         Frame
> * 1    LWP 31426         0x00007fbc89403f0f in ?? ()
> (gdb) bt full
> #0  0x00007fbc89403f0f in ?? ()
> No symbol table info available.
> #1  0x0800011000d46460 in ?? ()
> No symbol table info available.
> #2  0xffffffff00000001 in ?? ()
> No symbol table info available.
> #3  0x0000000000d63230 in ?? ()
> No symbol table info available.
> #4  0x00000000d59d000a in ?? ()
> No symbol table info available.
> #5  0x0000000000000000 in ?? ()
> No symbol table info available.
>
>
> # dpkg -l kamailio\*
> Desired=Unknown/Install/Remove/Purge/Hold
> |
> Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
> |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
> ||/ Name                           Version              Architecture
>      Description
> +++-==============================-====================-====================-=================================================================
> ii  kamailio                       4.3.1+wheezy         amd64
>      very fast and configurable SIP proxy
> un  kamailio-berkeley-modules      <none>
>      (no description available)
> un  kamailio-carrierroute-modules  <none>
>      (no description available)
> un  kamailio-cpl-modules           <none>
>      (no description available)
> ii  kamailio-dbg:amd64             4.3.1+wheezy         amd64
>      very fast and configurable SIP proxy [debug symbols]
> un  kamailio-ldap-modules          <none>
>      (no description available)
> un  kamailio-lua-modules           <none>
>      (no description available)
> un  kamailio-mysql-modules         <none>
>      (no description available)
> un  kamailio-perl-modules          <none>
>      (no description available)
> ii  kamailio-postgres-modules:amd6 4.3.1+wheezy         amd64
>      PostgreSQL database connectivity module for Kamailio
> un  kamailio-presence-modules      <none>
>      (no description available)
> un  kamailio-python-modules        <none>
>      (no description available)
> un  kamailio-radius-modules        <none>
>      (no description available)
> un  kamailio-snmpstats-modules     <none>
>      (no description available)
> un  kamailio-tls-modules           <none>
>      (no description available)
> un  kamailio-unixodbc-modules      <none>
>      (no description available)
> un  kamailio-xml-modules           <none>
>      (no description available)
> un  kamailio-xmpp-modules          <none>
>      (no description available)
>
>
>
> Regards,
> -Sven
>
>
>
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-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com

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