incorrect pin after flashing MK100.0-violet-202010051026-PREMIUM

Bug description: incorrect pin after flashing MK100.0-violet-202010051026-PREMIUM
Affected version: MK100.0-violet-202010051026-PREMIUM
Steps to replicate: I wiped factory reset the phone now its fine. However during setup i am unable to set pin. refer to below screenshot.

Bug description: incorrect pin after flashing MK100.0-violet-202010051026-PREMIUM
Affected version: MK100.0-violet-202010051026-PREMIUM
Steps to replicate: logs below:

10-05 17:26:27.436 12376 18607 E LockPatternUtils: Unable to save lock password
10-05 17:26:27.436 12376 18607 E LockPatternUtils: java.lang.NullPointerException: Attempt to get length of null array
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at android.os.Parcel.createException(Parcel.java:2077)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at android.os.Parcel.readException(Parcel.java:2039)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at android.os.Parcel.readException(Parcel.java:1987)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at com.android.internal.widget.ILockSettings$Stub$Proxy.setLockCredential(ILockSettings.java:1108)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at com.android.internal.widget.LockPatternUtils.saveLockPassword(LockPatternUtils.java:998)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at com.android.internal.widget.LockPatternUtils.saveLockPassword(LockPatternUtils.java:957)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at com.android.settings.password.ChooseLockPassword$SaveAndFinishWorker.saveAndVerifyInBackground(ChooseLockPassword.java:1103)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at com.android.settings.password.SaveChosenLockWorkerBase$Task.doInBackground(SaveChosenLockWorkerBase.java:119)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at com.android.settings.password.SaveChosenLockWorkerBase$Task.doInBackground(SaveChosenLockWorkerBase.java:115)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at android.os.AsyncTask$3.call(AsyncTask.java:378)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at java.util.concurrent.FutureTask.run(FutureTask.java:266)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:289)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at java.lang.Thread.run(Thread.java:919)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: Caused by: android.os.RemoteException: Remote stack trace:
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at com.android.server.locksettings.SyntheticPasswordManager$PasswordData.fromBytes(SyntheticPasswordManager.java:241)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at com.android.server.locksettings.SyntheticPasswordManager.unwrapPasswordBasedSyntheticPassword(SyntheticPasswordManager.java:867)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at com.android.server.locksettings.LockSettingsService.spBasedSetLockCredentialInternalLocked(LockSettingsService.java:2812)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at com.android.server.locksettings.LockSettingsService.setLockCredentialInternal(LockSettingsService.java:1603)
10-05 17:26:27.436 12376 18607 E LockPatternUtils: at com.android.server.locksettings.LockSettingsService.setLockCredential(LockSettingsService.java:1522)
10-05 17:26:27.436 12376 18607 E LockPatternUtils:

more logs here

i feel like kernel is the issue.

@martincz kindly check.

Still no update. Pls check

@martincz @GuaiYiHu please make sure premium builds are stable. this needs your high attention. the upstreamed kernel needs to be fixed . Thanks