Unable to open socket for UEventObserver and bootloop

[Erfan Abdi]

Hi Guys 

i was trying to port MIUI 8.2(android 7.0) and i fixed many errors until i got this one while booting:

02-24 06:26:59.319  9477  9477 I SystemServer: InitWatchdog

02-24 06:26:59.320  9477  9477 I SystemServer: StartInputManagerService

02-24 06:26:59.320  9477  9477 I InputManager: Initializing input manager, mUseDevInputEventForAudioJack=true

02-24 06:26:59.322  9477  9477 I SystemServer: StartWindowManagerService

02-24 06:26:59.334  9477  9518 I WindowManager: No existing display settings /data/system/display_settings.xml; starting empty

02-24 06:26:59.367  9477  9606 E AndroidRuntime: *** FATAL EXCEPTION IN SYSTEM PROCESS: UEventObserver

02-24 06:26:59.367  9477  9606 E AndroidRuntime: java.lang.RuntimeException: Unable to open socket for UEventObserver

02-24 06:26:59.367  9477  9606 E AndroidRuntime:        at android.os.UEventObserver.nativeSetup(Native Method)

02-24 06:26:59.367  9477  9606 E AndroidRuntime:        at android.os.UEventObserver.-wrap3(UEventObserver.java)

02-24 06:26:59.367  9477  9606 E AndroidRuntime:        at android.os.UEventObserver$UEventThread.run(UEventObserver.java:179)

02-24 06:26:59.370  9477  9606 I Process : Sending signal. PID: 9477 SIG: 9

02-24 06:26:59.403   517   517 I ServiceManager: service 'package' died

02-24 06:26:59.403   517   517 I ServiceManager: service 'otadexopt' died

02-24 06:26:59.403   517   517 I ServiceManager: service 'user' died

so i went to source code and here's where error came : https://android.googlesource.com/platform/hardware/libhardware/+/d6054a36475b5ff502b4af78f7d272a713c1a8e7/uevent/uevent.c

i'm not sure when it crashes but i guess it's because of failure on binding socket and lack of permissions(just for information SELinux is Permissive)

i'm not very familiar with netlink socket and this stuff's so if you know please tell me where should i check?

really appreciate any kind of help

Thanks a lot