Date: Tue, 08 Aug 2006 20:10:38 -0400 From: Eric Millbrandt <emillbrandt@coldhaus.com> To: freebsd-ports@freebsd.org Subject: Openssh-portable fails to create a tty session. Message-ID: <44D927FE.1060905@coldhaus.com>
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I am out of ideas about what the problem is. I am using the default sshd_config installed by the port. I can authenticate, copy files, and start processes, but sshd fails to create a tty session. This happens from remote machines and creating a session from the host machine. I find the following under messages. Aug 8 19:32:16 mongoloid sshd[44626]: fatal: mm_send_fd: sendmsg(4): Bad file descriptor Aug 8 19:32:16 mongoloid sshd[44626]: error: close(s->ptymaster/0): Bad file descriptor Aug 8 19:32:16 mongoloid sshd[44629]: fatal: mm_receive_fd: recvmsg: expected received 1 got 0 And here is a debug script from sshd. Script started on Tue Aug 8 19:33:45 2006 19:33 emillbrandt@mongoloid:/usr/local/etc/periodic/daily# uname -a FreeBSD mongoloid.xxxxxxxxx.com 4.11-STABLE FreeBSD 4.11-STABLE #9: Thu Mar 23 21:27:05 EST 2006 emillbrandt@mongoloid.xxxxxx.com:/builds/obj/usr/src/sys/MONGOLOID alpha 19:34 emillbrandt@mongoloid:/usr/local/etc/periodic/daily# gcc --version 2.95.4 19:34 emillbrandt@mongoloid:/usr/local/etc/periodic/daily# /usr/sbin/sshd -dddD debug2: load_server_config: filename /etc/ssh/sshd_config debug2: load_server_config: done config len = 247 debug2: parse_server_config: config /etc/ssh/sshd_config len 247 debug1: sshd version OpenSSH_4.3p2 debug3: Not a RSA1 key file /etc/ssh/ssh_host_rsa_key. debug1: read PEM private key done: type RSA debug1: private host key: #0 type 1 RSA debug3: Not a RSA1 key file /etc/ssh/ssh_host_dsa_key. debug1: read PEM private key done: type DSA debug1: private host key: #1 type 2 DSA debug1: rexec_argv[0]='/usr/sbin/sshd' debug1: rexec_argv[1]='-dddD' debug2: fd 3 setting O_NONBLOCK debug1: Bind to port 22 on ::. Server listening on :: port 22. debug2: fd 4 setting O_NONBLOCK debug1: Bind to port 22 on 0.0.0.0. Server listening on 0.0.0.0 port 22. debug1: fd 5 clearing O_NONBLOCK debug1: Server will not fork when running in debugging mode. debug3: send_rexec_state: entering fd = 8 config len 247 debug3: ssh_msg_send: type 0 debug3: send_rexec_state: done debug1: rexec start in 5 out 5 newsock 5 pipe -1 sock 8 debug1: inetd sockets after dupping: 3, 3 debug1: res_init() Connection from 71.243.122.19 port 4825 debug1: Client protocol version 2.0; client software version OpenSSH_4.3 debug1: match: OpenSSH_4.3 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_4.3 debug2: fd 3 setting O_NONBLOCK debug2: Network child is on pid 44667 debug3: preauth child monitor started debug3: mm_request_receive entering debug3: privsep user:group 22:22 debug1: permanently_set_uid: 22/22 debug1: list_hostkey_types: ssh-rsa,ssh-dss debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha1,diffie-hellman-group14-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,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,zlib@openssh.com debug2: kex_parse_kexinit: none,zlib@openssh.com 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-group14-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,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib debug2: kex_parse_kexinit: none,zlib@openssh.com,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: client->server aes128-cbc hmac-md5 none debug2: mac_init: found hmac-md5 debug1: kex: server->client aes128-cbc hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received debug3: mm_request_send entering: type 0 debug3: monitor_read: checking request 0 debug3: mm_answer_moduli: got parameters: 1024 1024 8192 debug3: mm_choose_dh: waiting for MONITOR_ANS_MODULI debug3: mm_request_receive_expect entering: type 1 debug3: mm_request_receive entering debug3: mm_request_send entering: type 1 debug3: mm_choose_dh: remaining 0 debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent debug2: monitor_read: 0 used once, disabling now debug3: mm_request_receive entering debug2: dh_gen_key: priv key bits set: 131/256 debug2: bits set: 519/1024 debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT debug2: bits set: 521/1024 debug3: mm_key_sign entering debug3: mm_request_send entering: type 4 debug3: monitor_read: checking request 4 debug3: mm_answer_sign debug3: mm_key_sign: waiting for MONITOR_ANS_SIGN debug3: mm_request_receive_expect entering: type 5 debug3: mm_request_receive entering debug3: mm_answer_sign: signature 0x120094600(271) debug3: mm_request_send entering: type 5 debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent debug2: kex_derive_keys debug2: set_newkeys: mode 1 debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug2: monitor_read: 4 used once, disabling now debug3: mm_request_receive entering debug2: set_newkeys: mode 0 debug1: SSH2_MSG_NEWKEYS received debug1: KEX done debug3: Trying to reverse map address 71.243.122.19. debug1: userauth-request for user emillbrandt service ssh-connection method none debug1: attempt 0 failures 0 debug3: mm_getpwnamallow entering debug3: mm_request_send entering: type 6 debug3: monitor_read: checking request 6 debug3: mm_getpwnamallow: waiting for MONITOR_ANS_PWNAM debug3: mm_answer_pwnamallow debug3: mm_request_receive_expect entering: type 7 debug3: mm_answer_pwnamallow: sending MONITOR_ANS_PWNAM: 1 debug3: mm_request_receive entering debug3: mm_request_send entering: type 7 debug2: input_userauth_request: setting up authctxt for emillbrandt debug2: monitor_read: 6 used once, disabling now debug3: mm_start_pam entering debug3: mm_request_receive entering debug3: mm_request_send entering: type 45 debug3: monitor_read: checking request 45 debug3: mm_inform_authserv entering debug1: PAM: initializing for "emillbrandt" debug3: mm_request_send entering: type 3 debug2: input_userauth_request: try method none debug3: Trying to reverse map address 71.243.122.19. Failed none for emillbrandt from 71.243.122.19 port 4825 ssh2 debug1: PAM: setting PAM_RHOST to "mongoloid" debug2: monitor_read: 45 used once, disabling now debug1: userauth-request for user emillbrandt service ssh-connection method keyboard-interactive debug3: mm_request_receive entering debug1: attempt 1 failures 1 debug3: monitor_read: checking request 3 debug2: input_userauth_request: try method keyboard-interactive debug3: mm_answer_authserv: service=ssh-connection, style= debug1: keyboard-interactive devs debug2: monitor_read: 3 used once, disabling now debug1: auth2_challenge: user=emillbrandt devs= debug3: mm_request_receive entering debug1: kbdint_alloc: devices 'pam' debug2: auth2_challenge_start: devices pam debug2: kbdint_next_device: devices <empty> debug1: auth2_challenge_start: trying authentication method 'pam' debug3: mm_sshpam_init_ctx debug3: mm_request_send entering: type 48 debug3: monitor_read: checking request 48 debug3: mm_sshpam_init_ctx: waiting for MONITOR_ANS_PAM_INIT_CTX debug3: mm_answer_pam_init_ctx debug3: mm_request_receive_expect entering: type 49 debug3: PAM: sshpam_init_ctx entering debug3: mm_request_receive entering debug3: mm_request_send entering: type 49 debug3: PAM: sshpam_thread_conv entering, 1 messages debug3: ssh_msg_send: type 1 debug3: mm_sshpam_query debug3: ssh_msg_recv entering debug3: mm_request_receive entering debug3: mm_request_send entering: type 50 debug3: monitor_read: checking request 50 debug3: mm_sshpam_query: waiting for MONITOR_ANS_PAM_QUERY debug3: mm_answer_pam_query debug3: mm_request_receive_expect entering: type 51 debug3: PAM: sshpam_query entering debug3: mm_request_receive entering debug3: ssh_msg_recv entering debug3: mm_request_send entering: type 51 debug3: mm_sshpam_query: pam_query returned 0 debug3: mm_request_receive entering Postponed keyboard-interactive for emillbrandt from 71.243.122.19 port 4825 ssh2 debug3: mm_sshpam_respond debug3: mm_request_send entering: type 52 debug3: monitor_read: checking request 52 debug3: mm_answer_pam_respond debug2: PAM: sshpam_respond entering, 1 responses debug3: ssh_msg_send: type 6 debug3: mm_sshpam_respond: waiting for MONITOR_ANS_PAM_RESPOND debug3: mm_request_receive_expect entering: type 53 debug3: mm_request_receive entering debug1: do_pam_account: called debug3: PAM: do_pam_account pam_acct_mgmt = 0 (Success) debug3: ssh_msg_send: type 0 debug3: mm_request_send entering: type 53 debug3: mm_sshpam_respond: pam_respond returned 1 debug3: mm_request_receive entering debug3: mm_sshpam_query debug3: mm_request_send entering: type 50 debug3: monitor_read: checking request 50 debug3: mm_answer_pam_query debug3: PAM: sshpam_query entering debug3: ssh_msg_recv entering debug3: PAM: import_environments entering debug3: sshpam_password_change_required 0 debug3: PAM: num env strings 0 debug1: PAM: num PAM env strings 0 debug3: mm_request_send entering: type 51 debug3: mm_request_receive entering debug3: mm_sshpam_query: waiting for MONITOR_ANS_PAM_QUERY debug3: mm_request_receive_expect entering: type 51 debug3: mm_request_receive entering debug3: mm_sshpam_query: pam_query returned 0 Postponed keyboard-interactive/pam for emillbrandt from 71.243.122.19 port 4825 ssh2 debug3: mm_sshpam_respond debug3: mm_request_send entering: type 52 debug3: monitor_read: checking request 52 debug3: mm_answer_pam_respond debug2: PAM: sshpam_respond entering, 0 responses debug3: mm_request_send entering: type 53 debug3: mm_request_receive entering debug3: mm_sshpam_respond: waiting for MONITOR_ANS_PAM_RESPOND debug3: mm_request_receive_expect entering: type 53 debug3: mm_request_receive entering debug3: mm_sshpam_respond: pam_respond returned 0 debug3: mm_sshpam_free_ctx debug3: mm_request_send entering: type 54 debug3: monitor_read: checking request 54 debug3: mm_answer_pam_free_ctx debug3: PAM: sshpam_free_ctx entering debug3: PAM: sshpam_thread_cleanup entering debug3: mm_request_send entering: type 55 debug2: monitor_read: 54 used once, disabling now debug3: mm_request_receive_expect entering: type 46 debug3: mm_request_receive entering debug3: mm_sshpam_free_ctx: waiting for MONITOR_ANS_PAM_FREE_CTX debug3: mm_request_receive_expect entering: type 55 debug3: mm_request_receive entering debug3: mm_do_pam_account entering debug3: mm_request_send entering: type 46 debug1: do_pam_account: called debug3: mm_request_send entering: type 47 Accepted keyboard-interactive/pam for emillbrandt from 71.243.122.19 port 4825 ssh2 debug1: monitor_child_preauth: emillbrandt has been authenticated by privileged process debug3: mm_get_keystate: Waiting for new keys debug3: mm_request_receive_expect entering: type 24 debug3: mm_request_receive entering debug3: mm_request_receive_expect entering: type 47 debug3: mm_request_receive entering debug3: mm_do_pam_account returning 1 Accepted keyboard-interactive/pam for emillbrandt from 71.243.122.19 port 4825 ssh2 debug3: mm_send_keystate: Sending new keys: 0x12008e680 0x12008e600 debug3: mm_newkeys_to_blob: converting 0x12008e680 debug3: mm_newkeys_to_blob: converting 0x12008e600 debug3: mm_send_keystate: New keys have been sent debug3: mm_send_keystate: Sending compression state debug3: mm_request_send entering: type 24 debug3: mm_newkeys_from_blob: 0x12008e480(122) debug2: mac_init: found hmac-md5 debug3: mm_get_keystate: Waiting for second key debug3: mm_newkeys_from_blob: 0x12008e480(122) debug2: mac_init: found hmac-md5 debug3: mm_get_keystate: Getting compression state debug3: mm_get_keystate: Getting Network I/O buffers debug3: mm_share_sync: Share sync debug3: mm_share_sync: Share sync end debug3: mm_send_keystate: Finished sending state debug2: User child is on pid 44675 debug3: mm_request_receive entering debug3: PAM: opening session debug1: PAM: reinitializing credentials debug1: permanently_set_uid: 1000/0 debug2: set_newkeys: mode 0 debug2: set_newkeys: mode 1 debug1: Entering interactive session for SSH2. debug2: fd 5 setting O_NONBLOCK debug2: fd 6 setting O_NONBLOCK debug1: server_init_dispatch_20 debug1: server_input_channel_open: ctype session rchan 0 win 65536 max 16384 debug1: input_session_request debug1: channel 0: new [server-session] debug1: session_new: init debug1: session_new: session 0 debug1: session_open: channel 0 debug1: session_open: session 0: link with channel 0 debug1: server_input_channel_open: confirm session debug1: server_input_channel_req: channel 0 request pty-req reply 0 debug1: session_by_channel: session 0 channel 0 debug1: session_input_channel_req: session 0 req pty-req debug1: Allocating pty. debug3: mm_request_send entering: type 25 debug3: monitor_read: checking request 25 debug3: mm_answer_pty entering debug1: session_new: init debug1: session_new: session 0 debug3: mm_request_send entering: type 26 mm_send_fd: sendmsg(4): Bad file descriptor debug1: do_cleanup debug1: PAM: cleanup debug3: PAM: sshpam_thread_cleanup entering debug1: session_pty_cleanup: session 0 release /dev/ttyp3 close(s->ptymaster/0): Bad file descriptor 19:35 emillbrandt@mongoloid:/usr/local/etc/periodic/daily# debug3: mm_pty_allocate: waiting for MONITOR_ANS_PTY debug3: mm_request_receive_expect entering: type 26 debug3: mm_request_receive entering mm_receive_fd: recvmsg: expected received 1 got 0 debug1: do_cleanup debug1: PAM: cleanup debug3: PAM: sshpam_thread_cleanup entering 19:35 emillbrandt@mongoloid:/usr/local/etc/periodic/daily# exit exit Script done on Tue Aug 8 19:35:22 2006
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