HPUX: ssh hangs after shell exit

[Aaron Bush]

Markus Friedl wrote:
> 
> On Tue, Jun 05, 2001 at 05:30:45PM -0400, Aaron Bush wrote:
> > 1) establish connection to sshd using ssh simply via "ssh remote-host"
> > 2) type exit in interactive shell on remote-host.
> > 3) "logout" is echoed to the terminal and the local shell prompt is NOT
> > echoed.
> > 4) type any other key, usually i just hit the space-bar. <<--PROBLEM IS
> > HERE
> > 5) "Connection to remote-host closed." is echoed to the terminal
> > followed by the local shell prompt.
> 
> do you have
>         ssh -v -v -v remote-host
> traces?

Sure here is the debug to a HPUX 11.00 host that is still setting
SA_RESTART:

OpenSSH_2.9p1, SSH protocols 1.5/2.0, OpenSSL 0x0090600f
debug1: Reading configuration data /home/abush/.ssh/config
debug1: Applying options for *
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Seeding random number generator
debug1: Rhosts Authentication disabled, originating port will not be
trusted.
debug1: restore_uid
debug1: ssh_connect: getuid 500 geteuid 0 anon 1
debug1: Connecting to k200 [10.10.1.10] port 22.
debug1: temporarily_use_uid: 500/500 (e=0)
debug1: restore_uid
debug1: temporarily_use_uid: 500/500 (e=0)
debug1: restore_uid
debug1: Connection established.
debug1: read PEM private key done: type DSA
debug1: read PEM private key done: type RSA
debug1: identity file /home/abush/.ssh/identity type -1
debug1: identity file /home/abush/.ssh/id_rsa type -1
debug3: No RSA1 key file /home/abush/.ssh/id_dsa.
debug2: key_type_from_name: unknown key type '-----BEGIN'
debug3: key_read: no key found
debug2: key_type_from_name: unknown key type 'Proc-Type:'
debug3: key_read: no key found
debug2: key_type_from_name: unknown key type 'DEK-Info:'
debug3: key_read: no key found
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug3: key_read: no space
debug2: key_type_from_name: unknown key type '-----END'
debug3: key_read: no key found
debug1: identity file /home/abush/.ssh/id_dsa type 2
debug1: Remote protocol version 1.99, remote software version
OpenSSH_2.9p1
debug1: match: OpenSSH_2.9p1 pat ^OpenSSH
Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_2.9p1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit:
diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael128-cbc,rijndael192-cbc,rijndael256-cbc,rijndael-cbc at lysator.liu.se
debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael128-cbc,rijndael192-cbc,rijndael256-cbc,rijndael-cbc at lysator.liu.se
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none
debug2: kex_parse_kexinit: none
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows 0 
debug2: kex_parse_kexinit: reserved 0 
debug2: kex_parse_kexinit:
diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-dss
debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael128-cbc,rijndael192-cbc,rijndael256-cbc,rijndael-cbc at lysator.liu.se
debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael128-cbc,rijndael192-cbc,rijndael256-cbc,rijndael-cbc at lysator.liu.se
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows 0 
debug2: kex_parse_kexinit: reserved 0 
debug2: mac_init: found hmac-md5
debug1: kex: server->client aes128-cbc hmac-md5 none
debug2: mac_init: found hmac-md5
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: dh_gen_key: priv key bits set: 124/256
debug1: bits set: 1042/2049
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug3: check_host_in_hostfile: filename /home/abush/.ssh/known_hosts2
debug3: check_host_in_hostfile: match line 8
debug3: check_host_in_hostfile: filename /home/abush/.ssh/known_hosts2
debug3: check_host_in_hostfile: match line 8
debug1: Host 'k200' is known and matches the DSA host key.
debug1: Found key in /home/abush/.ssh/known_hosts2:8
debug1: bits set: 1034/2049
debug1: len 55 datafellows 0
debug1: ssh_dss_verify: signature correct
debug1: kex_derive_keys
debug1: newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: waiting for SSH2_MSG_NEWKEYS
debug1: newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: done: ssh_kex2.
debug1: send SSH2_MSG_SERVICE_REQUEST
debug1: service_accept: ssh-userauth
debug1: got SSH2_MSG_SERVICE_ACCEPT
debug1: authentications that can continue:
publickey,password,keyboard-interactive
debug3: start over, passed a different list
publickey,password,keyboard-interactive
debug3: preferred publickey,password,keyboard-interactive
debug3: authmethod_lookup publickey
debug3: remaining preferred: password,keyboard-interactive
debug3: authmethod_is_enabled publickey
debug1: next auth method to try is publickey
debug1: userauth_pubkey_agent: testing agent key /home/abush/.ssh/id_dsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: input_userauth_pk_ok: pkalg ssh-dss blen 433 lastkey 0x808f678
hint -1
debug2: input_userauth_pk_ok: fp
2f:3d:aa:c6:e8:6e:68:f5:d4:7e:8a:7f:3c:af:3e:4d
debug3: sign_and_send_pubkey
debug3: clear_auth_state: key_free 0x808f678
debug1: ssh-userauth2 successful: method publickey
debug3: clear hostkey 0
debug3: clear hostkey 1
debug3: clear hostkey 2
debug1: fd 5 setting O_NONBLOCK
debug1: fd 6 IS O_NONBLOCK
debug1: channel 0: new [client-session]
debug1: channel_new: 0
debug1: send channel open 0
debug1: Entering interactive session.
debug2: callback start
debug1: client_init id 0 arg 0
debug2: tty_make_modes: ospeed 38400
debug2: tty_make_modes: ispeed 38400
debug2: tty_make_modes: 1 3
debug2: tty_make_modes: 2 28
debug2: tty_make_modes: 3 127
debug2: tty_make_modes: 4 21
debug2: tty_make_modes: 5 4
debug2: tty_make_modes: 6 255
debug2: tty_make_modes: 7 255
debug2: tty_make_modes: 8 17
debug2: tty_make_modes: 9 19
debug2: tty_make_modes: 10 26
debug2: tty_make_modes: 12 18
debug2: tty_make_modes: 13 23
debug2: tty_make_modes: 14 22
debug2: tty_make_modes: 18 15
debug2: tty_make_modes: 30 0
debug2: tty_make_modes: 31 0
debug2: tty_make_modes: 32 0
debug2: tty_make_modes: 33 0
debug2: tty_make_modes: 34 0
debug2: tty_make_modes: 35 0
debug2: tty_make_modes: 36 1
debug2: tty_make_modes: 37 0
debug2: tty_make_modes: 38 1
debug2: tty_make_modes: 39 1
debug2: tty_make_modes: 40 0
debug2: tty_make_modes: 41 1
debug2: tty_make_modes: 50 1
debug2: tty_make_modes: 51 1
debug2: tty_make_modes: 52 0
debug2: tty_make_modes: 53 1
debug2: tty_make_modes: 54 1
debug2: tty_make_modes: 55 1
debug2: tty_make_modes: 56 0
debug2: tty_make_modes: 57 0
debug2: tty_make_modes: 58 0
debug2: tty_make_modes: 59 1
debug2: tty_make_modes: 60 1
debug2: tty_make_modes: 61 1
debug2: tty_make_modes: 62 0
debug2: tty_make_modes: 70 1
debug2: tty_make_modes: 71 0
debug2: tty_make_modes: 72 1
debug2: tty_make_modes: 73 0
debug2: tty_make_modes: 74 0
debug2: tty_make_modes: 75 0
debug2: tty_make_modes: 90 1
debug2: tty_make_modes: 91 1
debug2: tty_make_modes: 92 0
debug2: tty_make_modes: 93 0
debug1: channel request 0: shell
debug2: callback done
debug1: channel 0: open confirm rwindow 0 rmax 16384
debug2: channel 0: rcvd adjust 32768
Last login: Thu Jun  7 10:22:33 2001 from sysadm.microcen
TERM = (xterm) 
HHHHHHHHH       
H        H        H        H        H        H        H       
H        H[?1l>k200$ exit
logout
debug1: channel 0: rcvd eof
debug1: channel 0: output open -> drain
debug1: channel 0: obuf empty
debug1: channel 0: output drain -> closed
debug1: channel 0: close_write
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: channel 0: rcvd close
debug1: channel 0: input open -> closed
debug1: channel 0: close_read
debug2: channel 0: no data after CLOSE
debug1: channel 0: send close
debug1: channel 0: is dead
debug1: channel_free: channel 0: status: The following connections are
open:
  #0 client-session (t4 r0 i8/0 o128/0 fd -1/-1)

debug1: channel_free: channel 0: dettaching channel user
Connection to k200 closed.
debug1: Transferred: stdin 0, stdout 0, stderr 28 bytes in 7.1 seconds
debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 4.0
debug1: Exit status 0