[OpenSIPS-Users] Possible dispatcher module memory leak

[Bogdan-Andrei Iancu]

Hi Chad,

Thank you for the report - I made a check and I can confirm your sayings 
about the leak. I will verify why a dialog tm function is sent and not a 
simple one.
I will come back to you asap.

Regards,
Bogdan

Fox, Chad wrote:
>
> We have experienced an issue where a device in our dispatcher list 
> becomes unavailable and the dispatcher has to begin probing that resource.
>
> We noticed that the memory grows at a constant rate after this happens 
> and until the device is brought back online.
>
> Inspecting the memory allocated by shm_malloc we see that the leaked 
> memory is made up of dlg_t objects and strings allocated via shm_str_dup.
>
> Looking at the ds_check_timer() function we see where the dlg_t 
> objects and strings are allocated by a call to new_dlg_uac from 
> t_request_outside().
>
> Is it the dispatcher module’s job to shm_free the dialog memory, or 
> does tm free it on it’s own?
>
> <modules/dispatcher/dispatch.c> (openser 1.3.2)
>
> void ds_check_timer(unsigned int ticks, void* param)
>
> {
>
> …
>
> dlg_t * dialog;
>
> …
>
> /* Iterate over the groups and the entries of each group: */
>
> for(list = _ds_list; list!= NULL; list= list->next)
>
> {
>
> for(j=0; j<list->nr; j++)
>
> {
>
> /* If the Flag of the entry has "Probing set, send a probe: */
>
> if ((list->dlist[j].flags&DS_PROBING_DST) > 0)
>
> {
>
> …
>
> /* Execute the Dialog using the "req_outside"-Method of the
>
> * TM-Module.
>
> * req_outside(str* m, str* t, str* f, str* h, str* b,
>
> * dlg_t** d, transaction_cb c, void* cp); */
>
> if (tmb.t_request_outside(&ds_ping_method,
>
> &list->dlist[j].uri,
>
> &ds_ping_from,
>
> NULL,
>
> NULL,
>
> &dialog,
>
> ds_options_callback,
>
> (void*)(long)list->id) < 0) {
>
> LM_ERR("unable to execute dialog\n");
>
> }
>
> }
>
> }
>
> }
>
> }
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>