[asterisk-bugs] [JIRA] (ASTERISK-25498) Asterisk crashes when negotiating g729 without that module installed

[Jonathan Rose (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-25498?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Rose updated ASTERISK-25498:
-------------------------------------

    Attachment: translation_sans_trans_pvt.patch

I have a patch for you to try (translation_sans_trans_pvt.patch). What I think happened here is that an assumption was made that the format would either be equal to signed linear or not equal to signed linear, but the possibility that signed linear would be included as a subset of the format used was discounted... and this is why we were able to get to ast_translate without having a translation path set. It wasn't being managed by the part of the code intended to handle when the formats were equal or when they were unequal, so it attempts to translate with nothing which causes problems.

Let me know if the patch doesn't work and I'll dig a little deeper. Also let me know if the backtrace changes as a result of the patch.

> Asterisk crashes when negotiating g729 without that module installed
> --------------------------------------------------------------------
>
>                 Key: ASTERISK-25498
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25498
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Codecs/General
>    Affects Versions: 13.4.0
>         Environment: $ lscpu
> Architecture:          x86_64
> CPU op-mode(s):        32-bit, 64-bit
> Byte Order:            Little Endian
> CPU(s):                8
> On-line CPU(s) list:   0-7
> Thread(s) per core:    1
> Core(s) per socket:    4
> Socket(s):             2
> NUMA node(s):          1
> Vendor ID:             GenuineIntel
> CPU family:            6
> Model:                 45
> Stepping:              2
> CPU MHz:               2300.000
> BogoMIPS:              4600.00
> Hypervisor vendor:     VMware
> Virtualization type:   full
> L1d cache:             32K
> L1i cache:             32K
> L2 cache:              256K
> L3 cache:              20480K
> NUMA node0 CPU(s):     0-7
> $ free -m
>              total       used       free     shared    buffers     cached
> Mem:         12010      11670        339          0        174       8262
> -/+ buffers/cache:       3233       8777
> Swap:         4092         26       4066
> $ uname -mrs
> Linux 3.13.0-62-generic x86_64
> $ lsb_release -a
> No LSB modules are available.
> Distributor ID: Ubuntu
> Description:  Ubuntu 14.04.3 LTS
> Release:  14.04
> Codename: trusty
>            Reporter: Ben Langfeld
>            Assignee: Jonathan Rose
>         Attachments: backtrace-asterisk-13.6.0.txt, backtrace.txt, backtrace.txt, minute.log, sip.conf, translation_sans_trans_pvt.patch
>
>
> Regularly the following log lines are followed by Asterisk crashing (backtrace attached):
> ```
> [Oct 19 11:17:43] WARNING[15022][C-0001f68d] translate.c: No translator path: (starting codec is not valid)
> [Oct 19 11:17:43] WARNING[15051][C-0001f68d] channel.c: Unable to find a codec translation path: (g729) -> (ulaw)
> ```
> I do not see any relevant changes between 13.4.0 and 13.6.0, but I am in the process of upgrading anyway to confirm this issue is still present.



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