[Bug 402734] [NEW] sftp subsystem dies when requested

[Jeremy Wall]

Public bug reported:

Binary package hint: openssh-server

When trying to do file transfers over ssh to my Ubuntu Jaunty box I get
connection refused errors. SSH and SCP both work fine. And the sftp
subsystem is enabled in the sshd-config file

System info:


$> lsb_release -rd
Description:    Ubuntu 9.04
Release:        9.04

$> uname -a
Linux demachina.wall.fam 2.6.28-13-generic #45-Ubuntu SMP Tue Jun 30 22:12:12 UTC 2009 x86_64 GNU/Linux

$> dpkg-query --show openssh-server
openssh-server  1:5.1p1-5ubuntu1

ssh debug log output for the request shows:

$> sudo /etc/init.d/ssh restart -ddd

subsystem request for sftp
debug1: subsystem: exec() /usr/lib/openssh/sftp-server
debug2: fd 3 setting TCP_NODELAY
debug2: fd 11 setting O_NONBLOCK
debug2: fd 10 setting O_NONBLOCK
debug2: channel 0: rcvd eof
debug2: channel 0: output open -> drain
debug2: channel 0: obuf empty
debug2: channel 0: close_write
debug2: channel 0: output drain -> closed
debug1: Received SIGCHLD.
debug1: session_by_pid: pid 30913
debug1: session_exit_message: session 0 channel 0 pid 30913
debug2: channel 0: request exit-status confirm 0
debug1: session_exit_message: release channel 0
debug2: channel 0: read<=0 rfd 11 len 0
debug2: channel 0: read failed
debug2: channel 0: close_read
debug2: channel 0: input open -> drain
debug2: channel 0: ibuf empty
debug2: channel 0: send eof
debug2: channel 0: input drain -> closed
debug2: channel 0: send close
debug2: notify_done: reading
debug3: channel 0: will not send data after close
debug2: channel 0: rcvd close
debug3: channel 0: will not send data after close
debug2: channel 0: is dead
debug2: channel 0: gc: notify user
debug1: session_by_channel: session 0 channel 0
debug1: session_close_by_channel: channel 0 child 0
debug1: session_close: session 0 pid 0
debug3: session_unused: session id 0 unused
debug2: channel 0: gc: user detached
debug2: channel 0: is dead
debug2: channel 0: garbage collecting
debug1: channel 0: free: server-session, nchannels 1
debug3: channel 0: status: The following connections are open:

#0 server-session (t4 r0 i3/0 o3/0 fd -1/-1 cfd -1)

debug3: channel 0: close_fds r -1 w -1 e -1 c -1
Connection closed by 72.14.229.1
debug1: do_cleanup
debug3: PAM: sshpam_thread_cleanup entering
Transferred: sent 2216, received 2240 bytes
Closing connection to 72.14.229.1 port 36869
debug3: mm_request_send entering: type 63
debug3: monitor_read: checking request 63
debug3: mm_answer_term: tearing down sessions
debug1: PAM: cleanup
debug1: PAM: deleting credentials
debug1: PAM: closing session

** Affects: openssh (Ubuntu)
     Importance: Undecided
         Status: New

-- 
sftp subsystem dies when requested
https://bugs.launchpad.net/bugs/402734
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