[OpenSIPS-Devel] Help finding memory leak - 3.4.16

[Daniel Zanutti]

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: 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
>>
>> Any hints or suggestions on how to further investigate this would be
>> greatly appreciated.
>>
>>
>>
>> _______________________________________________
>> Devel mailing listDevel at lists.opensips.orghttp://lists.opensips.org/cgi-bin/mailman/listinfo/devel
>>
>>
>>
>
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