wifi_crash

E/AndroidRuntime(22666): *** FATAL EXCEPTION IN SYSTEM PROCESS: WifiWatchdogStateMachine
E/AndroidRuntime(22666): java.lang.NullPointerException
E/AndroidRuntime(22666): 	at android.net.arp.ArpPeer.doArp(ArpPeer.java:92)
E/AndroidRuntime(22666): 	at android.net.wifi.WifiWatchdogStateMachine.doArpTest(WifiWatchdogStateMachine.java:873)
E/AndroidRuntime(22666): 	at android.net.wifi.WifiWatchdogStateMachine.access$2600(WifiWatchdogStateMachine.java:89)
E/AndroidRuntime(22666): 	at android.net.wifi.WifiWatchdogStateMachine$VerifyingLinkState.processMessage(WifiWatchdogStateMachine.java:654)
E/AndroidRuntime(22666): 	at com.android.internal.util.StateMachine$SmHandler.processMsg(StateMachine.java:895)
E/AndroidRuntime(22666): 	at com.android.internal.util.StateMachine$SmHandler.handleMessage(StateMachine.java:756)
E/AndroidRuntime(22666): 	at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(22666): 	at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime(22666): 	at android.os.HandlerThread.run(HandlerThread.java:60)
W/Sensors (22904): sensorservice died [0x690ad1f0]
W/Sensors (23312): sensorservice died [0x67cdab18]
W/Sensors (23193): sensorservice died [0x68324a58]
W/Sensors (23903): sensorservice died [0x683b1d50]
W/AudioFlinger(22522): power manager service died !!!
W/Sensors (23008): sensorservice died [0x674499c0]
D/dalvikvm(22865): WAIT_FOR_CONCURRENT_GC blocked 0ms
D/dalvikvm(22865): GC_EXPLICIT freed 549K, 48% free 9362K/17987K, paused 2ms+4ms, total 31ms
W/AudioFlinger(22522): Thread AudioOut_2 cannot connect to the power manager service