ethernet: add null check before reporting server interface state
If the tethering interface disappears while in server mode (i.e.
tethering is enabled), registering a new InterfaceStateListener will
trigger an NPE.
Test: TH
Bug: 290971780
Change-Id: I1d10575e80e68c77ec4771ac37e5fbc07e03c708
diff --git a/service-t/src/com/android/server/ethernet/EthernetTracker.java b/service-t/src/com/android/server/ethernet/EthernetTracker.java
index 1f22b02..8141350 100644
--- a/service-t/src/com/android/server/ethernet/EthernetTracker.java
+++ b/service-t/src/com/android/server/ethernet/EthernetTracker.java
@@ -431,7 +431,7 @@
for (String iface : getClientModeInterfaces(canUseRestrictedNetworks)) {
unicastInterfaceStateChange(listener, iface);
}
- if (mTetheringInterfaceMode == INTERFACE_MODE_SERVER) {
+ if (mTetheringInterface != null && mTetheringInterfaceMode == INTERFACE_MODE_SERVER) {
unicastInterfaceStateChange(listener, mTetheringInterface);
}