[OpenSIPS-Devel] Help finding memory leak - 3.4.16

[Bogdan-Andrei Iancu]

Glad you found the issue !

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
   https://www.opensips-solutions.com
   https://www.siphub.com

On 29.01.2026 04:14, Daniel Zanutti wrote:
> Hi Bogdan
>
> You were right, found out the problem was a customization we did in a 
> module.
> Didn't know that get_dlg_by_ids function adds a ref internally so the 
> dialog is never released. The problem is that this customization is 
> not called on every call, so leak didn't happen very often. Now we are 
> calling dlg_unref properly.
>
> image.png
>
> Thanks for helping out!
>
>
> On Tue, Jan 27, 2026 at 6:49 AM Bogdan-Andrei Iancu 
> <bogdan at opensips.org> wrote:
>
>     Hi Daniel,
>
>     The dump shows you have ~29K dialogs in memory....maybe your
>     billing module is messing up with the dialogs?
>
>     Regards,
>
>     Bogdan-Andrei Iancu
>
>     OpenSIPS Founder and Developer
>        https://www.opensips-solutions.com
>        https://www.siphub.com
>
>     On 27.01.2026 04:50, Daniel Zanutti wrote:
>>     Hi Bogdan
>>
>>     Took some time but I got the log. Could you please take a look?
>>
>>     https://pastebin.com/mBGmpjfY
>>
>>     Thanks
>>
>>     On Fri, Jan 23, 2026 at 9:31 AM Bogdan-Andrei Iancu
>>     <bogdan at opensips.org> wrote:
>>
>>         Hi Daniel.
>>
>>         See
>>         https://opensips.org/Documentation/TroubleShooting-OutOfMem
>>         on how to do proper mem dumping. List again the output please.
>>
>>         Regards,
>>
>>         Bogdan-Andrei Iancu
>>
>>         OpenSIPS Founder and Developer
>>            https://www.opensips-solutions.com
>>            https://www.siphub.com
>>
>>         On 23.01.2026 03:10, Daniel Zanutti wrote:
>>>
>>>         Hi,
>>>
>>>         I'm facing a shared memory leak on OpenSIPS 3.4.16. SHM is
>>>         set to 2 GB, and its usage keeps increasing over time until
>>>         the process crashes. This usually happens after 1–2 days of
>>>         uptime.
>>>
>>>         I do have a custom billing module, originally developed for
>>>         OpenSIPS 1.11.x and later ported to 3.4.x. While the module
>>>         is a suspect, I'm also trying to rule out other possible
>>>         causes in the core or standard modules.
>>>
>>>         I generated the following |mem_shm_dump| after 24 hours of
>>>         traffic, at a moment with no active calls:
>>>         https://pastebin.com/QUmVJ1BH<https://pastebin.com/QUmVJ1BH>
>>>
>>>         Any hints or suggestions on how to further investigate this
>>>         would be greatly appreciated.
>>>
>>>
>>>
>>>
>>>         _______________________________________________
>>>         Devel mailing list
>>>         Devel at lists.opensips.org
>>>         http://lists.opensips.org/cgi-bin/mailman/listinfo/devel
>>
>
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