On OpenSuse, I encountered the following problem

Here is the output of the user creation, which i created before. For confirmation i again create the same user, mongod confirmed that user exist with this message

2016-02-13T15:55:24.404-0500 E QUERY Error: couldn't add user: User "admin@admin" already exists

After restarting mongod with

sudo mongod --dbpath /data/db1 --auth

and Login with Access control

mongo admin --port 27017 -u admin -p root --authenticationDatabase admin

the console shows the following error

2016-02-13T15:58:18.527-0500 I NETWORK DBClientCursor::init call() failed 2016-02-13T15:58:18.531-0500 E QUERY Error: 10276 DBClientBase::findN: transport error: 127.0.0.1:27017 ns: admin.$cmd query:

{ saslContinue: 1, payload: BinData(0, 633D626977732C723D353153664E516A722F6D6834303574374D464148582B6C695779444E2F6E4E676E6F4C515530557148612B5A59323548575130394E4C4B484C50773263...), conversationId: 1 }

at DB._authOrThrow (src/mongo/shell/db.js:1271:32) at (auth):6:8 at (auth):7:2 at src/mongo/shell/db.js:1271 exception: login failed

The mongod shows this error

2016-02-13T15:58:18.471-0500 I NETWORK [initandlisten] connection accepted from 127.0.0.1:53183 #1 (1 connection now open)

2016-02-13T15:58:18.490-0500 F - [conn1] Invalid access at address: 0

2016-02-13T15:58:18.524-0500 F - [conn1] Got signal: 11 (Segmentation fault).

which shows that mongod stopped.

What did I do wrong?