Hi Henning,

Thank you for guidance and suggestion. I did change the PKG size to 32MB and increased SHM to 1GB. But the same issue observed with a lesser time duration.

While looking at the below error, found that something changes in the smsops module which was causing the leak

Apr 29 13:28:53 stgn-haud-vm-ub-kamailio01 /usr/sbin/kamailio[5520]: ERROR: {1 1 MESSAGE 739708-3401@192.168.136.152} smsops [smsops_impl.c:815]: decode_3gpp_sms(): Error allocating 192 bytes!

Below is my analysis:
The initial code was

       if (!rp_data) {
		rp_data = (sms_rp_data_t*)pkg_malloc(sizeof(struct _sms_rp_data));
		if (!rp_data) {
			LM_ERR("Error allocating %lu bytes!\n", sizeof(struct _sms_rp_data));
			return -1;
		}
	} else {
		freeRP_DATA(rp_data);
	}

But it got changed in "smsops: Fix conversion from UCS-2 to UTF-8 and viceversa (#3546)" tag 8 months ago

           if(rp_data) {
		freeRP_DATA(rp_data);
	}
	rp_data = (sms_rp_data_t *)pkg_malloc(sizeof(struct _sms_rp_data));
	if(!rp_data) {
		LM_ERR("Error allocating %lu bytes!\n",
				(unsigned long)sizeof(struct _sms_rp_data));
		return -1;
	}

Now in the recent code it is not reusing the rp_data pointer, rather it allocates every time a new message reaches.

I will try to clone the tag and fix the code and keep you posted

            if(_smsops_rp_data) {
                    freeRP_DATA(_smsops_rp_data);
            } else {  //Added by Paresh Panda

            _smsops_rp_data =
                            (sms_rp_data_t *)pkg_malloc(sizeof(struct _sms_rp_data));
            }

Is there any plan for new tag ? , I am planning to take the latest kamailio tag to production.

I will update you after testing the fix as above.

Thank you!
Regards
Paresh

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