Problems when connecting to dropbear server running as non-root

Hans Harder hans at atbas.org
Tue Jul 16 02:03:09 WST 2013


I am trying to connect using ssh: -v -i privkey -p 7000 hans at host hostname
And I get:

debug1: Server accepts key: pkalg ssh-rsa blen 149
debug1: Authentication succeeded (publickey).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
debug1: Sending command: hostname
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
[28924] Jul 15 17:40:24 Exit (hans): Couldn't change user as non-root
TRACE  (28924) 1373910024.524936: enter session_cleanup
TRACE  (28924) 1373910024.525004: enter chancleanup
TRACE  (28924) 1373910024.525021: channel 0 closing
TRACE  (28924) 1373910024.525037: enter remove_channel
TRACE  (28924) 1373910024.525050: channel index is 0


Dropbear is running on the host as a non-root user hans with  dropbear -v
-F -P 7000  and gives (small part)

TRACE  (28923) 1373910024.518919: enter recv_msg_channel_request 0x82ca4e8
TRACE  (28923) 1373910024.518942: enter chansessionrequest
TRACE  (28923) 1373910024.518961: type is exec
TRACE  (28923) 1373910024.519100: enter sessioncommand
TRACE  (28923) 1373910024.519138: enter noptycommand
TRACE  (28923) 1373910024.519370: setnonblocking: 8
TRACE  (28923) 1373910024.519411: leave setnonblocking
TRACE  (28923) 1373910024.519429: setnonblocking: 7
TRACE  (28923) 1373910024.519451: leave setnonblocking
TRACE  (28923) 1373910024.519475: setnonblocking: 10
TRACE  (28923) 1373910024.519497: leave setnonblocking
TRACE  (28924) 1373910024.519758: back to normal sigchld
TRACE  (28923) 1373910024.525685: enter sigchld handler
TRACE  (28923) 1373910024.525735: sigchld handler: pid 28924
TRACE  (28923) 1373910024.525761: using lastexit
TRACE  (28923) 1373910024.525811: leave sigchld handler
TRACE  (28923) 1373910024.525836: parent side: lastexitpid is 28924
TRACE  (28923) 1373910024.525857: found match for lastexitpid
TRACE  (28923) 1373910024.525876: leave noptycommand
TRACE  (28923) 1373910024.525905: leave chansessionrequest
TRACE  (28923) 1373910024.525925: leave recv_msg_channel_request
TRACE  (28923) 1373910024.525945: sesscheckclose, pid is 28924
TRACE  (28923) 1373910024.525999: sesscheckclose, pid is 28924
TRACE  (28923) 1373910024.526022: might send data, flushing
TRACE  (28923) 1373910024.526041: send data readfd
TRACE  (28923) 1373910024.526060: enter send_msg_channel_data
TRACE  (28923) 1373910024.526080: enter send_msg_channel_data isextended 0
fd 8
TRACE  (28923) 1373910024.526104: maxlen 16375
TRACE  (28923) 1373910024.526127: CLOSE some fd 8
TRACE  (28923) 1373910024.526154: leave send_msg_channel_data: len 0 read
err 4 or EOF for fd 8
TRACE  (28923) 1373910024.526183: send data errfd
TRACE  (28923) 1373910024.526202: enter send_msg_channel_data
TRACE  (28923) 1373910024.526220: enter send_msg_channel_data isextended 1
fd 10
TRACE  (28923) 1373910024.526245: maxlen 16371
TRACE  (28923) 1373910024.526269: send_msg_channel_data: len 761 fd 10
TRACE  (28923) 1373910024.526338: closing from channel, flushing out.
TRACE  (28923) 1373910024.526360: CLOSE some fd 10

On 2 other boxes it works perfectly, so there is something on this host
which is breaking it...

Anybody got a hint where to look for.

thx
Hans
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