多个PackageInstaller导致无法开机

出错信息如下：

09-11 15:25:48.414   858   858 E System  : ******************************************
09-11 15:25:48.414   858   858 E System  : ************ Failure starting system services
09-11 15:25:48.414   858   858 E System  : java.lang.RuntimeException: There must be exactly one installer; found [ResolveInfo{4f7a3fa com.android.packageinstaller/.InstallStart m=0x608000}, ResolveInfo{ec32dab com.google.android.packageinstaller/com.android.packageinstaller.InstallStart m=0x608000}]
09-11 15:25:48.414   858   858 E System  : 	at com.android.server.pm.PackageManagerService.getRequiredInstallerLPr(PackageManagerService.java:3538)
09-11 15:25:48.414   858   858 E System  : 	at com.android.server.pm.PackageManagerService.<init>(PackageManagerService.java:3189)
09-11 15:25:48.414   858   858 E System  : 	at com.android.server.pm.PackageManagerService.main(PackageManagerService.java:2310)
09-11 15:25:48.414   858   858 E System  : 	at com.android.server.SystemServer.startBootstrapServices(SystemServer.java:628)
09-11 15:25:48.414   858   858 E System  : 	at com.android.server.SystemServer.run(SystemServer.java:429)
09-11 15:25:48.414   858   858 E System  : 	at com.android.server.SystemServer.main(SystemServer.java:294)
09-11 15:25:48.414   858   858 E System  : 	at java.lang.reflect.Method.invoke(Native Method)
09-11 15:25:48.414   858   858 E System  : 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
09-11 15:25:48.414   858   858 E System  : 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:838)
09-11 15:25:48.414   858   858 D SystemServerTiming: StartPackageManagerService took to complete: 682ms
09-11 15:25:48.414   858   858 E Zygote  : System zygote died with exception
09-11 15:25:48.414   858   858 E Zygote  : java.lang.RuntimeException: There must be exactly one installer; found [ResolveInfo{4f7a3fa com.android.packageinstaller/.InstallStart m=0x608000}, ResolveInfo{ec32dab com.google.android.packageinstaller/com.android.packageinstaller.InstallStart m=0x608000}]
09-11 15:25:48.414   858   858 E Zygote  : 	at com.android.server.pm.PackageManagerService.getRequiredInstallerLPr(PackageManagerService.java:3538)
09-11 15:25:48.414   858   858 E Zygote  : 	at com.android.server.pm.PackageManagerService.<init>(PackageManagerService.java:3189)
09-11 15:25:48.414   858   858 E Zygote  : 	at com.android.server.pm.PackageManagerService.main(PackageManagerService.java:2310)
09-11 15:25:48.414   858   858 E Zygote  : 	at com.android.server.SystemServer.startBootstrapServices(SystemServer.java:628)
09-11 15:25:48.414   858   858 E Zygote  : 	at com.android.server.SystemServer.run(SystemServer.java:429)
09-11 15:25:48.414   858   858 E Zygote  : 	at com.android.server.SystemServer.main(SystemServer.java:294)
09-11 15:25:48.414   858   858 E Zygote  : 	at java.lang.reflect.Method.invoke(Native Method)
09-11 15:25:48.414   858   858 E Zygote  : 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
09-11 15:25:48.414   858   858 E Zygote  : 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:838)
09-11 15:25:48.414   858   858 D AndroidRuntime: Shutting down VM
--------- beginning of crash

对应PKMS代码：

private @NonNull String getRequiredInstallerLPr() {
    final Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
    intent.addCategory(Intent.CATEGORY_DEFAULT);
    intent.setDataAndType(Uri.fromFile(new File("foo.apk")), PACKAGE_MIME_TYPE);

    final List<ResolveInfo> matches = queryIntentActivitiesInternal(intent, PACKAGE_MIME_TYPE,
            MATCH_SYSTEM_ONLY | MATCH_DIRECT_BOOT_AWARE | MATCH_DIRECT_BOOT_UNAWARE,
            UserHandle.USER_SYSTEM);
    if (matches.size() == 1) {
        ResolveInfo resolveInfo = matches.get(0);
        if (!resolveInfo.activityInfo.applicationInfo.isPrivilegedApp()) {
            throw new RuntimeException("The installer must be a privileged app");
        }
        return matches.get(0).getComponentInfo().packageName;
    } else {
        throw new RuntimeException("There must be exactly one installer; found " + matches);
    }
}

对应SystemServer代码：

try {
    traceBeginAndSlog("StartServices");
    startBootstrapServices();
    startCoreServices();
    startOtherServices();
    SystemServerInitThreadPool.shutdown();
} catch (Throwable ex) {
    Slog.e("System", "******************************************");
    Slog.e("System", "************ Failure starting system services", ex);
    throw ex;
} finally {
    traceEnd();
}