qcacmn: Delete the nbuf debug entries of frag_list in qdf_nbuf_free_debug

When a jumbo packet connected using fragmented list is freed,  kernel frees
the nbufs of the frag_list as well. In qdf_nbuf_free_debug, we currently
delete the nbuf debug entry of the head nbuf only,
resulting in false alarm of nbuf leaks of the frag_list.
Fix this by deleting the nbuf debug entries of all nbufs of frag_list.

Change-Id: I2d44c9c87ef8e65f9329ac62fad44089d2c76240
CRs-Fixed: 2498317

qdf/linux/src/qdf_nbuf.c

@@ -2592,6 +2592,8 @@ qdf_export_symbol(qdf_nbuf_alloc_debug);
 
 void qdf_nbuf_free_debug(qdf_nbuf_t nbuf, const char *func, uint32_t line)
 {
+	qdf_nbuf_t ext_list;
+
 	if (qdf_unlikely(!nbuf))
 		return;
 
@@ -2603,6 +2605,17 @@ void qdf_nbuf_free_debug(qdf_nbuf_t nbuf, const char *func, uint32_t line)
 	qdf_net_buf_debug_delete_node(nbuf);
 	qdf_nbuf_history_add(nbuf, func, line, QDF_NBUF_FREE);
 
+	/* Take care to delete the debug entries for frag_list */
+	ext_list = qdf_nbuf_get_ext_list(nbuf);
+	while (ext_list) {
+		if (qdf_nbuf_get_users(ext_list) == 1) {
+			qdf_nbuf_panic_on_free_if_mapped(ext_list, func, line);
+			qdf_net_buf_debug_delete_node(ext_list);
+		}
+
+		ext_list = qdf_nbuf_queue_next(ext_list);
+	}
+
 free_buf:
 	__qdf_nbuf_free(nbuf);
 }