diff --git a/third-party/pjproject/patches/0007-BUGBUG-Add-debug-tracing.patch b/third-party/pjproject/patches/0007-BUGBUG-Add-debug-tracing.patch
new file mode 100644
index 0000000..039d438
--- /dev/null
+++ b/third-party/pjproject/patches/0007-BUGBUG-Add-debug-tracing.patch
@@ -0,0 +1,95 @@
+diff --git a/pjlib/src/pj/log.c b/pjlib/src/pj/log.c
+index 293ad46..1d7211c 100644
+--- a/pjlib/src/pj/log.c
++++ b/pjlib/src/pj/log.c
+@@ -380,7 +380,7 @@ PJ_DEF(void) pj_log( const char *sender, int level,
+ 	pre += pj_utoa_pad(ptime.msec, pre, 3, '0');
+     }
+     if (log_decor & PJ_LOG_HAS_SENDER) {
+-	enum { SENDER_WIDTH = 14 };
++	enum { SENDER_WIDTH = 23 };
+ 	pj_size_t sender_len = strlen(sender);
+ 	if (pre!=log_buffer) *pre++ = ' ';
+ 	if (sender_len <= SENDER_WIDTH) {
+diff --git a/pjsip/include/pjsip/sip_transport.h b/pjsip/include/pjsip/sip_transport.h
+index 767a025..05349da 100644
+--- a/pjsip/include/pjsip/sip_transport.h
++++ b/pjsip/include/pjsip/sip_transport.h
+@@ -652,7 +652,8 @@ PJ_DECL(pj_status_t) pjsip_tx_data_create( pjsip_tpmgr *mgr,
+  *
+  * @param tdata	    The transmit buffer.
+  */
+-PJ_DECL(void) pjsip_tx_data_add_ref( pjsip_tx_data *tdata );
++#define pjsip_tx_data_add_ref(tdata) pjsip_tx_data_add_ref_dbg(tdata, __FILE__, __LINE__, __PRETTY_FUNCTION__)
++PJ_DECL(void) pjsip_tx_data_add_ref_dbg(pjsip_tx_data *tdata, const char *file, int line, const char *func);
+ 
+ /**
+  * Decrement reference counter of the transmit buffer.
+@@ -664,7 +665,8 @@ PJ_DECL(void) pjsip_tx_data_add_ref( pjsip_tx_data *tdata );
+  *		    status is non-zero. A status PJSIP_EBUFDESTROYED will be
+  *		    returned to inform that buffer is destroyed.
+  */
+-PJ_DECL(pj_status_t) pjsip_tx_data_dec_ref( pjsip_tx_data *tdata );
++#define pjsip_tx_data_dec_ref(tdata) pjsip_tx_data_dec_ref_dbg(tdata, __FILE__, __LINE__, __PRETTY_FUNCTION__)
++PJ_DECL(pj_status_t) pjsip_tx_data_dec_ref_dbg(pjsip_tx_data *tdata, const char *file, int line, const char *func);
+ 
+ /**
+  * Print the SIP message to transmit data buffer's internal buffer. This
+diff --git a/pjsip/src/pjsip/sip_transport.c b/pjsip/src/pjsip/sip_transport.c
+index d672a6d..936dc86 100644
+--- a/pjsip/src/pjsip/sip_transport.c
++++ b/pjsip/src/pjsip/sip_transport.c
+@@ -422,7 +422,8 @@ PJ_DEF(pj_status_t) pjsip_tx_data_create( pjsip_tpmgr *mgr,
+     tdata = PJ_POOL_ZALLOC_T(pool, pjsip_tx_data);
+     tdata->pool = pool;
+     tdata->mgr = mgr;
+-    pj_memcpy(tdata->obj_name, pool->obj_name, PJ_MAX_OBJ_NAME);
++    pj_ansi_snprintf(tdata->obj_name, sizeof(tdata->obj_name), "tdta%p", tdata);
++    pj_memcpy(pool->obj_name, tdata->obj_name, sizeof(pool->obj_name));
+ 
+     status = pj_atomic_create(tdata->pool, 0, &tdata->ref_cnt);
+     if (status != PJ_SUCCESS) {
+@@ -451,6 +452,7 @@ PJ_DEF(pj_status_t) pjsip_tx_data_create( pjsip_tpmgr *mgr,
+     pj_atomic_inc( tdata->mgr->tdata_counter );
+ #endif
+ 
++    PJ_LOG(5,(tdata->obj_name, "Created tdata"));
+     *p_tdata = tdata;
+     return PJ_SUCCESS;
+ }
+@@ -459,9 +461,12 @@ PJ_DEF(pj_status_t) pjsip_tx_data_create( pjsip_tpmgr *mgr,
+ /*
+  * Add reference to tx buffer.
+  */
+-PJ_DEF(void) pjsip_tx_data_add_ref( pjsip_tx_data *tdata )
++PJ_DEF(void) pjsip_tx_data_add_ref_dbg(pjsip_tx_data *tdata, const char *file, int line, const char *func)
+ {
+-    pj_atomic_inc(tdata->ref_cnt);
++    pj_atomic_t *ref_cnt;
++
++    ref_cnt = pj_atomic_inc_and_get(tdata->ref_cnt);
++    PJ_LOG(5,(tdata->obj_name, "tdata inc ref:%d %s:%s(%d)", (int) ref_cnt, file, func, line));
+ }
+ 
+ static void tx_data_destroy(pjsip_tx_data *tdata)
+@@ -489,7 +494,7 @@ static void tx_data_destroy(pjsip_tx_data *tdata)
+  * Decrease transport data reference, destroy it when the reference count
+  * reaches zero.
+  */
+-PJ_DEF(pj_status_t) pjsip_tx_data_dec_ref( pjsip_tx_data *tdata )
++PJ_DEF(pj_status_t) pjsip_tx_data_dec_ref_dbg(pjsip_tx_data *tdata, const char *file, int line, const char *func)
+ {
+     pj_atomic_value_t ref_cnt;
+     
+@@ -498,9 +503,11 @@ PJ_DEF(pj_status_t) pjsip_tx_data_dec_ref( pjsip_tx_data *tdata )
+     ref_cnt = pj_atomic_dec_and_get(tdata->ref_cnt);
+     pj_assert( ref_cnt >= 0);
+     if (ref_cnt == 0) {
++	PJ_LOG(5,(tdata->obj_name, "tdata destroy %s:%s(%d)", file, func, line));
+ 	tx_data_destroy(tdata);
+ 	return PJSIP_EBUFDESTROYED;
+     } else {
++	PJ_LOG(5,(tdata->obj_name, "tdata dec ref:%d %s:%s(%d)", (int) ref_cnt, file, func, line));
+ 	return PJ_SUCCESS;
+     }
+ }