Merge "Add some useful helpers and constants."
diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardSimPinView.java b/packages/SystemUI/src/com/android/keyguard/KeyguardSimPinView.java
index fe03fba..16a0e5a 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardSimPinView.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardSimPinView.java
@@ -64,7 +64,11 @@
                 // again when the PUK locked SIM is re-entered.
                 case ABSENT: {
                     KeyguardUpdateMonitor.getInstance(getContext()).reportSimUnlocked(mSubId);
-                    mCallback.dismiss(true, KeyguardUpdateMonitor.getCurrentUser());
+                    // onSimStateChanged callback can fire when the SIM PIN lock is not currently
+                    // active and mCallback is null.
+                    if (mCallback != null) {
+                        mCallback.dismiss(true, KeyguardUpdateMonitor.getCurrentUser());
+                    }
                     break;
                 }
                 default:
diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardSimPukView.java b/packages/SystemUI/src/com/android/keyguard/KeyguardSimPukView.java
index 826a03d..fddb12d 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardSimPukView.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardSimPukView.java
@@ -70,7 +70,11 @@
                 // move into the READY state and the PUK lock keyguard should be removed.
                 case READY: {
                     KeyguardUpdateMonitor.getInstance(getContext()).reportSimUnlocked(mSubId);
-                    mCallback.dismiss(true, KeyguardUpdateMonitor.getCurrentUser());
+                    // mCallback can be null if onSimStateChanged callback is called when keyguard
+                    // isn't active.
+                    if (mCallback != null) {
+                        mCallback.dismiss(true, KeyguardUpdateMonitor.getCurrentUser());
+                    }
                     break;
                 }
                 default:
diff --git a/services/core/java/com/android/server/connectivity/tethering/OffloadController.java b/services/core/java/com/android/server/connectivity/tethering/OffloadController.java
index 057704a..cff216c 100644
--- a/services/core/java/com/android/server/connectivity/tethering/OffloadController.java
+++ b/services/core/java/com/android/server/connectivity/tethering/OffloadController.java
@@ -596,9 +596,10 @@
         }
 
         mNatUpdateCallbacksReceived++;
+        final String natDescription = String.format("%s (%s, %s) -> (%s, %s)",
+                protoName, srcAddr, srcPort, dstAddr, dstPort);
         if (DBG) {
-            mLog.log(String.format("NAT timeout update: %s (%s, %s) -> (%s, %s)",
-                     protoName, srcAddr, srcPort, dstAddr, dstPort));
+            mLog.log("NAT timeout update: " + natDescription);
         }
 
         final int timeoutSec = connectionTimeoutUpdateSecondsFor(proto);
@@ -609,7 +610,7 @@
             NetlinkSocket.sendOneShotKernelMessage(OsConstants.NETLINK_NETFILTER, msg);
         } catch (ErrnoException e) {
             mNatUpdateNetlinkErrors++;
-            mLog.e("Error updating NAT conntrack entry: " + e
+            mLog.e("Error updating NAT conntrack entry >" + natDescription + "<: " + e
                     + ", msg: " + NetlinkConstants.hexify(msg));
             mLog.log("NAT timeout update callbacks received: " + mNatUpdateCallbacksReceived);
             mLog.log("NAT timeout update netlink errors: " + mNatUpdateNetlinkErrors);