diff --git a/core/net/src/main/java/org/onosproject/net/packet/impl/PacketManager.java b/core/net/src/main/java/org/onosproject/net/packet/impl/PacketManager.java
index 943bb93..657ca48 100644
--- a/core/net/src/main/java/org/onosproject/net/packet/impl/PacketManager.java
+++ b/core/net/src/main/java/org/onosproject/net/packet/impl/PacketManager.java
@@ -385,9 +385,19 @@
             // TODO filter packets sent to processors based on registrations
             for (ProcessorEntry entry : processors) {
                 try {
+                    if (log.isTraceEnabled()) {
+                        log.trace("Starting packet processing by {}",
+                                entry.processor().getClass().getName());
+                    }
+
                     long start = System.nanoTime();
                     entry.processor().process(context);
                     entry.addNanos(System.nanoTime() - start);
+
+                    if (log.isTraceEnabled()) {
+                        log.trace("Finished packet processing by {}",
+                                entry.processor().getClass().getName());
+                    }
                 } catch (Exception e) {
                     log.warn("Packet processor {} threw an exception", entry.processor(), e);
                 }
diff --git a/protocols/openflow/api/src/main/java/org/onosproject/openflow/controller/DefaultOpenFlowPacketContext.java b/protocols/openflow/api/src/main/java/org/onosproject/openflow/controller/DefaultOpenFlowPacketContext.java
index 9bd2146..ac9ed82 100644
--- a/protocols/openflow/api/src/main/java/org/onosproject/openflow/controller/DefaultOpenFlowPacketContext.java
+++ b/protocols/openflow/api/src/main/java/org/onosproject/openflow/controller/DefaultOpenFlowPacketContext.java
@@ -105,13 +105,17 @@
         checkPermission(PACKET_READ);
 
         try {
-            return Ethernet.deserializer().deserialize(pktin.getData(), 0, pktin.getData().length);
+            return Ethernet.deserializer().deserialize(
+                    pktin.getData(), 0, pktin.getData().length);
         } catch (BufferUnderflowException | NullPointerException |
                 DeserializationException e) {
             Logger log = LoggerFactory.getLogger(getClass());
-            log.error("packet deserialization problem : {}", e.getMessage());
-            return null;
+            log.error("Packet deserialization problem", e);
+        } catch (Exception e) {
+            Logger log = LoggerFactory.getLogger(getClass());
+            log.error("Unexpected packet deserialization problem", e);
         }
+        return null;
     }
 
     @Override