openssh unix dev - Jun 2000 - sshd does not exit after scp (hpux 11.00 / ssh 2.1.1p1)

I have encountered a problem using Openssh-2.1.1p1 on Solaris 2.6

I connect to a remote box with

localbox> ssh -X remotebox
remotebox> nedit&

nedit show up fine
I quit nedit ... 

And now the connection to remotehost dies as well ...

running ssh with -v shows the following

[...]
debug: Requesting pty.
debug: Requesting X11 forwarding with authentication spoofing.
debug: Requesting shell.
debug: Entering interactive session.
[...]
debug: Received X11 open request.
debug: fd 7 setting O_NONBLOCK
debug: channel 0: new [X11 connection from remotehost port 50931]
[...]
debug: channel 0: send data len 32
debug: channel 0: send data len 32
debug: channel 0: send data len 32
debug: channel 0: send data len 512
debug: channel 0: send data len 512
[...]
debug: channel 0: rcvd ieof
debug: channel 0: output open -> drain
debug: channel 0: obuf empty
debug: channel 0: output drain -> closed
debug: channel 0: send oclose
debug: channel 0: close_write
debug: channel 0: send data len 384
debug: channel 0: send data len 96
debug: channel 0: read<=0 rfd 7 len 0
debug: channel 0: read failed
debug: channel 0: input open -> drain
debug: channel 0: close_read
debug: channel 0: input: no drain shortcut
debug: channel 0: ibuf empty
debug: channel 0: input drain -> wait_oclose
debug: channel 0: send ieof
Connection to tardis closed by remote host.
Connection to tardis closed.
debug: Transferred: stdin 20, stdout 1224, stderr 75 bytes in 17.0 seconds
debug: Bytes per second: stdin 1.2, stdout 72.2, stderr 4.4
debug: Exit status -1
debug: writing PRNG seed to file /home/oetiker/.ssh/prng_seed
[...]

I found that the problem seems to be restricted to Motif apps ...
it does not happen with Xt, Qt or GTK apps

cheers
tobi

-- 
 ______    __   _
/_  __/_  / /  (_) Oetiker, Timelord & SysMgr @ EE-Dept ETH-Zurich
 / // _ \/ _ \/ / TEL: +41(0)1-6325286  FAX:...1517  ICQ: 10419518 
/_/ \.__/_.__/_/ oetiker at ee.ethz.ch http://ee-staff.ethz.ch/~oetiker

Hello,

I have encountered a problem using ssh-2.1.1p1 on HP-UX 11.00:

Everything else seems to work but running scp results in processes staying open:
On the server there are 2 processes still running after copying a file:
"scp -v
-t /tmp"
and one sshd. On the client also a ssh-process stays running until killing one
of
the processes manually...

The copying works fine however.

I've seen this or similar problems have been reported earlier, but I could
not
find
a solution. If I can provide additional infos please tell me...

Thanks,
Klaus

On Mon, 19 Jun 2000 kengelha at advance-bank.de wrote:
> 
> 
> Hello,
> 
> I have encountered a problem using ssh-2.1.1p1 on HP-UX 11.00:
> 
> Everything else seems to work but running scp results in processes
> staying open:  On the server there are 2 processes still running
> after copying a file: "scp -v -t /tmp" and one sshd. On the
client
> also a ssh-process stays running until killing one of the processes
> manually...
Can you turn on debugging at the server end (LogLevel DEBUG) and send
along the output?

Thanks,
Damien Miller

-- 
| "Bombay is 250ms from New York in the new world order" - Alan Cox
| Damien Miller - http://www.mindrot.org/
| Email: djm at mindrot.org (home) -or- djm at ibs.com.au (work)

Hello,

Damien Miller wrote:
> Can you turn on debugging at the server end (LogLevel DEBUG) and send
> along the output?
Yes, here it comes:


Jun 19 17:02:33 uxdev05 sshd[3944]: Connection from 185.10.101.174 port 806
Jun 19 17:02:33 uxdev05 sshd[3862]: debug: Forked child 3944.
Jun 19 17:01:02 uxdev05 sshd[3925]: debug: tvp!=NULL kid 0 mili 10
Jun 19 17:02:33 uxdev05  above message repeats 2 times
Jun 19 17:02:33 uxdev05 sshd[3862]: debug: Seeding random number generator.
Jun 19 17:02:33 uxdev05 sshd[3862]: debug: OpenSSL random status is now 1
Jun 19 17:02:33 uxdev05 sshd[3862]: debug: 3 bytes from system calls
Jun 19 17:02:33 uxdev05 sshd[3944]: debug: Client protocol version 1.5; client
software version OpenSSH-1.2.2
Jun 19 17:02:33 uxdev05 sshd[3944]: debug: Local version string
SSH-1.5-OpenSSH_2.1.1
Jun 19 17:02:33 uxdev05 sshd[3944]: debug: Sent 768 bit public key and 1024 bit
host key.
Jun 19 17:02:33 uxdev05 sshd[3944]: debug: Encryption type: 3des
Jun 19 17:02:33 uxdev05 sshd[3944]: debug: Received session key; encryption
turned on.
Jun 19 17:02:33 uxdev05 sshd[3944]: debug: Installing crc compensation attack
detector.
Jun 19 17:02:33 uxdev05 sshd[3944]: debug: Starting up PAM with username
"root"
Jun 19 17:02:33 uxdev05 sshd[3944]: debug: Attempting authentication for root.
Jun 19 17:02:34 uxdev05 sshd[3862]: debug: 22 bytes from programs
Jun 19 17:02:34 uxdev05 sshd[3862]: debug: OpenSSL random status is now 1
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: PAM Password authentication accepted
for user "root"
Jun 19 17:02:36 uxdev05 sshd[3944]: Accepted password for ROOT from
185.10.101.174 port 806
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: PAM setting rhost to
"n4wm1780"
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: session_new: init
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: session_new: session 0
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: Exec command 'scp -t /tmp'
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: PAM establishing creds
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: Entering interactive session.
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: fd 10 setting O_NONBLOCK
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: fd 12 setting O_NONBLOCK
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: server_init_dispatch_13
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: server_init_dispatch_15
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: tvp!=NULL kid 0 mili 10
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: EOF received for stdin.


When killing the remaining process on the client, following is added to the
servers
logfile:

Jun 19 17:03:55 uxdev05 sshd[3944]: Connection closed by remote host.
Jun 19 17:03:55 uxdev05 sshd[3944]: debug: Calling cleanup 0x40015232(0x0)
Jun 19 17:02:36 uxdev05 sshd[3944]: debug: tvp!=NULL kid 0 mili 10
Jun 19 17:03:55 uxdev05  above message repeats 2 times
Jun 19 17:03:55 uxdev05 sshd[3944]: pam_setcred: error Permission denied
Jun 19 17:03:55 uxdev05 sshd[3944]: Cannot delete credentials: Permission denied
Jun 19 17:03:55 uxdev05 sshd[3944]: debug: Calling cleanup 0x400153d2(0x0)
Jun 19 17:03:55 uxdev05 sshd[3944]: debug: Calling cleanup 0x400153e2(0x0)
Jun 19 17:03:55 uxdev05 sshd[3944]: debug: writing PRNG seed to file
/root/.ssh/prng_seed


Thanks,
Klaus