[Samsung Galaxy S8 & S8+ Cross Device Development] exidler:
android.os.Process.setProcessGroup error

With your kernel (NK210, NK211) I have errors in Logcat like this:

11-01 16:58:44.514 4071-7444 W/ActivityManager: Failed setting process group of 5285 to 1
11-01 16:58:44.514 4071-7444 W/System.err: java.lang.IllegalArgumentException
11-01 16:58:44.514 4071-7444 W/System.err: at android.os.Process.setProcessGroup(Native Method)
11-01 16:58:44.514 4071-7444 W/System.err: at com.android.server.am.ActivityManagerService.applyOomAdjLocked(ActivityManagerService.java:25070)
11-01 16:58:44.514 4071-7444 W/System.err: at com.android.server.am.ActivityManagerService.updateOomAdjLocked(ActivityManagerService.java:25401)
11-01 16:58:44.514 4071-7444 W/System.err: at com.android.server.am.ActivityManagerService.updateOomAdjLocked(ActivityManagerService.java:25485)
11-01 16:58:44.514 4071-7444 W/System.err: at com.android.server.am.ActiveServices.serviceDoneExecutingLocked(ActiveServices.java:2655)
11-01 16:58:44.514 4071-7444 W/System.err: at com.android.server.am.ActiveServices.serviceDoneExecutingLocked(ActiveServices.java:2603)
11-01 16:58:44.514 4071-7444 W/System.err: at com.android.server.am.ActivityManagerService.serviceDoneExecuting(ActivityManagerService.java:21537)
11-01 16:58:44.514 4071-7444 W/System.err: at android.app.ActivityManagerNative.onTransact(ActivityManagerNative.java:1188)
11-01 16:58:44.514 4071-7444 W/System.err: at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:3652)
11-01 16:58:44.514 4071-7444 W/System.err: at android.os.Binder.execTransact(Binder.java:573)
11-01 16:58:44.515 4071-7625 W/SchedPolicy: add_tid_to_cgroup failed to write '5285' (Permission denied); fd=45
11-01 16:58:44.515 4071-7625 W/ActivityManager: Failed setting process group of 5285 to 5
11-01 16:58:44.515 4071-7625 W/System.err: java.lang.IllegalArgumentException
11-01 16:58:44.516 4071-7625 W/System.err: at android.os.Process.setProcessGroup(Native Method)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.ActivityManagerService.applyOomAdjLocked(ActivityManagerService.java:25070)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.ActivityManagerService.updateOomAdjLocked(ActivityManagerService.java:25401)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.ActivityManagerService.updateOomAdjLocked(ActivityManagerService.java:25485)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.ActiveServices.sendServiceArgsLocked(ActiveServices.java:2239)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.ActiveServices.bringUpServiceLocked(ActiveServices.java:1968)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.ActiveServices.startServiceInnerLocked(ActiveServices.java:635)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.ActiveServices.startServiceLocked(ActiveServices.java:578)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.ActiveServices.startServiceLocked(ActiveServices.java:389)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.ActivityManagerService.startServiceInPackage(ActivityManagerService.java:21353)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.PendingIntentRecord.sendInner(PendingIntentRecord.java:370)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.PendingIntentRecord.sendInner(PendingIntentRecord.java:251)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.PendingIntentRecord.sendWithResult(PendingIntentRecord.java:244)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.ActivityManagerService.sendIntentSender(ActivityManagerService.java:9588)
11-01 16:58:44.516 4071-7625 W/System.err: at android.app.ActivityManagerNative.onTransact(ActivityManagerNative.java:3234)
11-01 16:58:44.516 4071-7625 W/System.err: at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:3652)
11-01 16:58:44.516 4071-7625 W/System.err: at android.os.Binder.execTransact(Binder.java:573)
11-01 16:58:44.518 4071-7444 W/SchedPolicy: add_tid_to_cgroup failed to write '5285' (Permission denied); fd=46
11-01 16:58:44.518 4071-7444 W/ActivityManager: Failed setting process group of 5285 to 1
11-01 16:58:44.518 4071-7444 W/System.err: java.lang.IllegalArgumentException
11-01 16:58:44.518 4071-7444 W/System.err: at android.os.Process.setProcessGroup(Native Method)
11-01 16:58:44.519 4071-7444 W/System.err: at com.android.server.am.ActivityManagerService.applyOomAdjLocked(ActivityManagerService.java:25070)
11-01 16:58:44.519 4071-7444 W/System.err: at com.android.server.am.ActivityManagerService.updateOomAdjLocked(ActivityManagerService.java:25401)
11-01 16:58:44.519 4071-7444 W/System.err: at com.android.server.am.ActivityManagerService.updateOomAdjLocked(ActivityManagerService.java:25485)
11-01 16:58:44.519 4071-7444 W/System.err: at com.android.server.am.ActiveServices.serviceDoneExecutingLocked(ActiveServices.java:2655)
11-01 16:58:44.519 4071-7444 W/System.err: at com.android.server.am.ActiveServices.serviceDoneExecutingLocked(ActiveServices.java:2603)
11-01 16:58:44.519 4071-7444 W/System.err: at com.android.server.am.ActivityManagerService.serviceDoneExecuting(ActivityManagerService.java:21537)
11-01 16:58:44.519 4071-7444 W/System.err: at android.app.ActivityManagerNative.onTransact(ActivityManagerNative.java:1188)
11-01 16:58:44.519 4071-7444 W/System.err: at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:3652)
11-01 16:58:44.519 4071-7444 W/System.err: at android.os.Binder.execTransact(Binder.java:573)

Revert to stock kernel, or to BatStock - no this errors. Could you check is it fixable?