diff --git a/src/switch_core_codec.c b/src/switch_core_codec.c
index 8e6f717602a..c4f417e4eed 100644
--- a/src/switch_core_codec.c
+++ b/src/switch_core_codec.c
@@ -48,7 +48,10 @@ SWITCH_DECLARE(void) switch_core_session_unset_read_codec(switch_core_session_t
 	switch_mutex_t *mutex = NULL;
 
 	switch_mutex_lock(session->codec_read_mutex);
-	if (session->read_codec) mutex = session->read_codec->mutex;
+	if (session->read_codec) {
+		switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "Read codec addr: %p is set to NULL\n", (void *)&session->read_codec);
+		mutex = session->read_codec->mutex;
+	}
 	if (mutex) switch_mutex_lock(mutex);
 	session->real_read_codec = session->read_codec = NULL;
 	session->raw_read_frame.codec = session->read_codec;
@@ -112,6 +115,7 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_set_real_read_codec(switch_c
 			switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s Original read codec set to %s:%d\n",
 							  switch_channel_get_name(session->channel), codec->implementation->iananame, codec->implementation->ianacode);
 			session->read_codec = session->real_read_codec = codec;
+			switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "Read codec addr: %p\n", (void *)&session->read_codec);
 			changed_read_codec = 1;
 			if (codec->implementation) {
 				session->read_impl = *codec->implementation;
@@ -724,6 +728,8 @@ SWITCH_DECLARE(switch_status_t) switch_core_codec_init_with_bitrate(switch_codec
 
 		implementation->init(codec, flags, codec_settings);
 		switch_mutex_init(&codec->mutex, SWITCH_MUTEX_NESTED, codec->memory_pool);
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Codec mutex addr: %p\n", (void *)&codec->mutex);
+
 		switch_set_flag(codec, SWITCH_CODEC_FLAG_READY);
 		return SWITCH_STATUS_SUCCESS;
 	} else {
@@ -941,6 +947,8 @@ SWITCH_DECLARE(switch_status_t) switch_core_codec_destroy(switch_codec_t *codec)
 
 	if (mutex) switch_mutex_unlock(mutex);
 
+	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Codec read mutex addr: %p has been set to NULL\n", (void *)&mutex);
+
 	if (free_pool) {
 		switch_core_destroy_memory_pool(&pool);
 	}
diff --git a/src/switch_core_io.c b/src/switch_core_io.c
index 397878eec6e..e6fd688a40d 100644
--- a/src/switch_core_io.c
+++ b/src/switch_core_io.c
@@ -81,6 +81,8 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_read_frame(switch_core_sessi
 
 	switch_os_yield();
 
+	switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "Codec read mutex addr: %p\n", (void *)&session->codec_read_mutex);
+
 	if (switch_mutex_trylock(session->codec_read_mutex) == SWITCH_STATUS_SUCCESS) {
 		switch_mutex_unlock(session->codec_read_mutex);
 	} else {
@@ -186,8 +188,11 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_read_frame(switch_core_sessi
 		switch_mutex_unlock(session->read_codec->mutex);
 		switch_mutex_unlock(session->codec_read_mutex);
 		if ((status = session->endpoint_interface->io_routines->read_frame(session, frame, flags, stream_id)) == SWITCH_STATUS_SUCCESS) {
+			switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "Codec read mutex addr: %p\n", (void *)&session->codec_read_mutex);
 			for (ptr = session->event_hooks.read_frame; ptr; ptr = ptr->next) {
+				switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "Codec read mutex addr: %p\n", (void *)&session->codec_read_mutex);
 				if ((status = ptr->read_frame(session, frame, flags, stream_id)) != SWITCH_STATUS_SUCCESS) {
+					switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "Codec read mutex addr: %p\n", (void *)&session->codec_read_mutex);
 					break;
 				}
 			}
@@ -988,6 +993,8 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_read_frame(switch_core_sessi
 
   even_more_done:
 
+	switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "Read codec addr: %p, codec read mutex addr: %p\n", (void *)&session->read_codec, (void *)&session->codec_read_mutex);
+
 	if (!*frame ||
 			(!switch_test_flag(*frame, SFF_PROXY_PACKET) &&
 			 (!(*frame)->codec || !(*frame)->codec->implementation || !switch_core_codec_ready((*frame)->codec)))) {
diff --git a/src/switch_core_session.c b/src/switch_core_session.c
index c0391cbda86..118060b68a0 100644
--- a/src/switch_core_session.c
+++ b/src/switch_core_session.c
@@ -2689,6 +2689,8 @@ SWITCH_DECLARE(switch_core_session_t *) switch_core_session_request_uuid(switch_
 
 	switch_channel_set_variable_printf(session->channel, "session_id", "%u", session->id);
 
+	switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "Codec read mutex addr: %p\n", (void *)&session->codec_read_mutex);
+
 	return session;
 }