[Buildroot] OpenSSH login problem

[Michael Fischer]

Dear all,

I have a problem with the OpenSSH login on my raspberry. 
I can't login via ssh, after entering the username, the sever closed the connection.

I have checked it with the commit 01632805ab4be2bea4010ba1e46ab71f52d175a9 and this version works with the same configuration.
The actual commit doesn't work but  both commits have the same OpenSSH version.

OpenSSH Version is:  OpenSSH_8.3p1, OpenSSL 1.1.1g  21 Apr 2020

My SSHD logofile:

debug2: parse_server_config_depth: config reprocess config len 236
debug3: auth_shadow_acctexpired: today 18487 sp_expire -1 days left -18488
debug3: account expiration disabled
debug3: mm_answer_pwnamallow: sending MONITOR_ANS_PWNAM: 1
debug3: mm_request_send entering: type 9
debug2: monitor_read: 8 used once, disabling now
debug2: input_userauth_request: setting up authctxt for root [preauth]
debug3: mm_inform_authserv entering [preauth]
debug3: mm_request_send entering: type 4 [preauth]
debug2: input_userauth_request: try method none [preauth]
debug3: mm_request_receive entering
debug3: monitor_read: checking request 4
debug3: mm_answer_authserv: service=ssh-connection, style=
debug2: monitor_read: 4 used once, disabling now
debug3: user_specific_delay: user specific delay 0.000ms [preauth]
debug3: ensure_minimum_time_since: elapsed 10.528ms, delaying 10.089ms (requested 5.154ms) [preauth]
debug1: monitor_read_log: child log fd closed
debug3: mm_request_receive entering
debug1: do_cleanup
debug1: Killing privsep child 390

I don't know what is going wrong.
Console login works and ftp also.

Any help is welcome, I have no more idea where to look.


thanks,
  Michael.