SSAID Restore Possibly Breaks System

Question

SSAID Restore Possibly Breaks System

walwan opened this issue 2 years ago · 4 comments

Hi:

Thank you for this amazing tool.

I used this tool to backup all my apps in LineageOS 18.1 (Android 11) using the option "-badDeMOsx . -X *[cC]ache*." When I try to restore an app (rikka.appops) to Evolution X 6.3.1 (Android 12), I cannot boot into system next time after the restore.

Some experiments lead me to the file "/data/system/users/0/settings_ssaid.xml." If I backup the file before restore, and revert the changes tarb made to the file during the restore, I can boot into system next time.

I have attached the two /data/system/users/0/settings_ssaid.xml files before and after the restore, /dev/.vr25/tarb/ssaid and /dev/.vr25/tarb/log. Here is the link.

Thanks

Answer 1 · 2022-05-12T01:37:48.000Z

Seems that restoring any apps with ssaid backuped will cause the system fail to boot

Answer 2 · 2022-05-12T03:17:54.000Z

The settings_ssaid.xml file from that system is encrypted. It's not an actual xml file. I'll make tarb skip SSAID restore under this condition. One thing that bugs me (besides trying to understanding why Google decided to encrypt this file) is that another user tested the restore under the exact same condition (encrypted settings_ssaid.xml) -- yet, they got no bootloop, and restored app did not misbehave. Otherwise, I would have disabled this before release.

Answer 3 · 2022-05-12T04:58:45.000Z

Thank you.

I don't know why this caused my system fail to boot. The boot log has the following part, indicating settings.provider cannot read the settings file.

05-11 13:45:39.044 1673 1673 E System : ******************************************
05-11 13:45:39.045 1673 1673 E System : ************ Failure starting core service
05-11 13:45:39.045 1673 1673 E System : ******************************************
05-11 13:45:39.045 1673 1673 E System : ************ Failure starting system services
05-11 13:45:39.045 1673 1673 E System : java.lang.RuntimeException: Unable to get provider com.android.providers.settings.SettingsProvider: java.lang.ArrayIndexOutOfBoundsException: length=32; index=50
05-11 13:45:39.045 1673 1673 E System : at android.app.ActivityThread.installProvider(ActivityThread.java:7460)
05-11 13:45:39.045 1673 1673 E System : at android.app.ActivityThread.installContentProviders(ActivityThread.java:6977)
05-11 13:45:39.045 1673 1673 E System : at android.app.ActivityThread.installSystemProviders(ActivityThread.java:7636)
05-11 13:45:39.045 1673 1673 E System : at com.android.server.am.ContentProviderHelper.installSystemProviders(ContentProviderHelper.java:1247)
05-11 13:45:39.045 1673 1673 E System : at com.android.server.SystemServer.startOtherServices(SystemServer.java:1443)
05-11 13:45:39.045 1673 1673 E System : at com.android.server.SystemServer.run(SystemServer.java:890)
05-11 13:45:39.045 1673 1673 E System : at com.android.server.SystemServer.main(SystemServer.java:621)
05-11 13:45:39.045 1673 1673 E System : at java.lang.reflect.Method.invoke(Native Method)
05-11 13:45:39.045 1673 1673 E System : at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
05-11 13:45:39.045 1673 1673 E System : at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:981)
05-11 13:45:39.045 1673 1673 E System : Caused by: java.lang.ArrayIndexOutOfBoundsException: length=32; index=50
05-11 13:45:39.045 1673 1673 E System : at com.android.internal.util.FastDataInput.readInternedUTF(FastDataInput.java:172)
05-11 13:45:39.045 1673 1673 E System : at com.android.internal.util.BinaryXmlPullParser.consumeToken(BinaryXmlPullParser.java:283)
05-11 13:45:39.045 1673 1673 E System : at com.android.internal.util.BinaryXmlPullParser.nextToken(BinaryXmlPullParser.java:168)
05-11 13:45:39.045 1673 1673 E System : at com.android.internal.util.BinaryXmlPullParser.next(BinaryXmlPullParser.java:141)
05-11 13:45:39.045 1673 1673 E System : at com.android.providers.settings.SettingsState.parseSettingsLocked(SettingsState.java:1093)
05-11 13:45:39.045 1673 1673 E System : at com.android.providers.settings.SettingsState.parseStateLocked(SettingsState.java:1078)
05-11 13:45:39.045 1673 1673 E System : at com.android.providers.settings.SettingsState.parseStateFromXmlStreamLocked(SettingsState.java:1046)
05-11 13:45:39.045 1673 1673 E System : at com.android.providers.settings.SettingsState.readStateSyncLocked(SettingsState.java:1012)
05-11 13:45:39.045 1673 1673 E System : at com.android.providers.settings.SettingsState.(SettingsState.java:283)
05-11 13:45:39.045 1673 1673 E System : at com.android.providers.settings.SettingsProvider$SettingsRegistry.ensureSettingsStateLocked(SettingsProvider.java:2919)
05-11 13:45:39.045 1673 1673 E System : at com.android.providers.settings.SettingsProvider$SettingsRegistry.ensureSettingsForUserLocked(SettingsProvider.java:2907)
05-11 13:45:39.045 1673 1673 E System : at com.android.providers.settings.SettingsProvider$SettingsRegistry.peekSettingsStateLocked(SettingsProvider.java:3227)
05-11 13:45:39.045 1673 1673 E System : at com.android.providers.settings.SettingsProvider$SettingsRegistry.getSettingsNamesLocked(SettingsProvider.java:2849)
05-11 13:45:39.045 1673 1673 E System : at com.android.providers.settings.SettingsProvider$SettingsRegistry.syncSsaidTableOnStartLocked(SettingsProvider.java:2832)
05-11 13:45:39.045 1673 1673 E System : at com.android.providers.settings.SettingsProvider$SettingsRegistry.access$100(SettingsProvider.java:2702)
05-11 13:45:39.045 1673 1673 E System : at com.android.providers.settings.SettingsProvider.onCreate(SettingsProvi

Answer 4 · 2022-05-12T07:14:34.000Z

https://github.com/VR-25/tarb/releases/tag/v2022.5.12