### Dropbear MMAP problem?
Steve Spano
steve at fl-eng.com
Wed Jul 8 02:12:53 WST 2009
Hello,
I am attempting to get dropbear working on a Xilinx Microblaze system.
I have compiled it and it is excuting, but there seems to be some
buffer/alloc problem of some kind that I am not sure yet how to resolve.
This is an MMU-LESS system and compiled against uCLibc
I can connect, exchange keys, and authenticate my username password
propertly
However, when the terminal session begins, I get an error about un mapping
non-mmaped memory and then a subsequent buffer_incr problem and then an
exit.
The trace log is below - can anyone offer suggestions?
Thanks
quit
221 Goodbye
# ./dropbeart - -F
TRACE (79): enter loadhostkeys
TRACE (79): enter buf_get_priv_key
TRACE (79): enter rsa_key_free
TRACE (79): leave rsa_key_free: key == NULL
TRACE (79): enter buf_get_rsa_priv_key
TRACE (79): enter buf_get_rsa_pub_key
TRACE (79): leave buf_get_rsa_pub_key: success
TRACE (79): leave buf_get_rsa_priv_key
TRACE (79): leave buf_get_priv_key
TRACE (79): enter buf_get_priv_key
TRACE (79): enter dsa_key_free
TRACE (79): enter dsa_key_free: key == NULL
TRACE (79): enter buf_get_dss_pub_key
TRACE (79): leave buf_get_dss_pub_key: success
TRACE (79): leave buf_get_priv_key
TRACE (79): leave loadhostkeys
TRACE (79): listensockets: 1 to try
TRACE (79): listening on ':22'
TRACE (79): enter dropbear_listen
TRACE (79): dropbear_listen: all interfaces
TRACE (79): bind(22) failed
TRACE (79): leave dropbear_listen: success, 1 socks bound
[79] Jul 07 15:55:58 Not backgrounding
[79] Jul 07 15:56:13 Child connection from 192.168.1.21:2594
TRACE (79): enter session_init
TRACE (79): setnonblocking: 3
TRACE (79): leave setnonblocking
TRACE (79): setnonblocking: 5
TRACE (79): leave setnonblocking
TRACE (79): kexinitialise()
TRACE (79): leave session_init
TRACE (79): enter ident_readln
TRACE (79): leave ident_readln: return 36
TRACE (79): remoteident: SSH-2.0-1.84 sshlib: Tunnelier 4.29
TRACE (79): enter encrypt_packet()
TRACE (79): encrypt_packet type is 20
TRACE (79): enter writemac
TRACE (79): leave writemac
TRACE (79): enter enqueue
TRACE (79): leave enqueue
TRACE (79): leave encrypt_packet()
TRACE (79): DATAALLOWED=0
TRACE (79): -> KEXINIT
TRACE (79): enter write_packet
TRACE (79): empty queue dequeing
TRACE (79): leave write_packet
TRACE (79): enter read_packet
TRACE (79): leave read_packet
TRACE (79): maybe_empty_reply_queue - no data allowed
TRACE (79): enter read_packet
TRACE (79): enter decrypt_packet
TRACE (79): leave decrypt_packet
TRACE (79): leave read_packet
TRACE (79): enter process_packet
TRACE (79): process_packet: packet type = 20
TRACE (79): <- KEXINIT
TRACE (79): enter recv_msg_kexinit
TRACE (79): buf_match_algo:
diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellma
n-group1-sha1
TRACE (79): kex algo diffie-hellman-group1-sha1
TRACE (79): buf_match_algo: ssh-rsa,ssh-dss
TRACE (79): hostkey algo ssh-rsa
TRACE (79): buf_match_algo:
aes256-ctr,twofish256-ctr,twofish-ctr,aes128-ctr,twofish128-ctr,blowfish-ctr
,3des-ctr,cast128-ctr,aes256-cbc,twofish256-cbc,twofish-cbc,aes128-cbc,twofi
sh128-cbc,blowfish-cbc,3des-cbc,arcfour,cast128-cbc
TRACE (79): enc c2s is aes256-ctr
TRACE (79): buf_match_algo:
aes256-ctr,twofish256-ctr,twofish-ctr,aes128-ctr,twofish128-ctr,blowfish-ctr
,3des-ctr,cast128-ctr,aes256-cbc,twofish256-cbc,twofish-cbc,aes128-cbc,twofi
sh128-cbc,blowfish-cbc,3des-cbc,arcfour,cast128-cbc
TRACE (79): enc s2c is aes256-ctr
TRACE (79): buf_match_algo: hmac-sha1,hmac-md5,hmac-sha1-96,hmac-md5-96
TRACE (79): hash c2s is hmac-sha1
TRACE (79): buf_match_algo: hmac-sha1,hmac-md5,hmac-sha1-96,hmac-md5-96
TRACE (79): hash s2c is hmac-sha1
TRACE (79): buf_match_algo: none
TRACE (79): hash c2s is none
TRACE (79): buf_match_algo: none
TRACE (79): hash s2c is none
TRACE (79): leave recv_msg_kexinit
TRACE (79): leave process_packet
TRACE (79): maybe_empty_reply_queue - no data allowed
TRACE (79): enter read_packet
TRACE (79): enter decrypt_packet
TRACE (79): leave decrypt_packet
TRACE (79): leave read_packet
TRACE (79): enter process_packet
TRACE (79): process_packet: packet type = 30
TRACE (79): enter recv_msg_kexdh_init
TRACE (79): enter send_msg_kexdh_reply
TRACE (79): enter send_msg_kexdh_reply
TRACE (79): enter buf_put_pub_key
TRACE (79): enter buf_put_rsa_pub_key
TRACE (79): enter buf_putmpint
TRACE (79): leave buf_putmpint
TRACE (79): enter buf_putmpint
TRACE (79): leave buf_putmpint
TRACE (79): leave buf_put_rsa_pub_key
TRACE (79): leave buf_put_pub_key
TRACE (79): enter buf_putmpint
TRACE (79): leave buf_putmpint
TRACE (79): enter buf_putmpint
TRACE (79): leave buf_putmpint
TRACE (79): enter buf_putmpint
TRACE (79): leave buf_putmpint
TRACE (79): enter buf_put_pub_key
TRACE (79): enter buf_put_rsa_pub_key
TRACE (79): enter buf_putmpint
TRACE (79): leave buf_putmpint
TRACE (79): enter buf_putmpint
TRACE (79): leave buf_putmpint
TRACE (79): leave buf_put_rsa_pub_key
TRACE (79): leave buf_put_pub_key
TRACE (79): enter buf_putmpint
TRACE (79): leave buf_putmpint
TRACE (79): enter buf_put_rsa_sign
TRACE (79): leave buf_put_rsa_sign
TRACE (79): enter encrypt_packet()
TRACE (79): encrypt_packet type is 31
TRACE (79): enter writemac
TRACE (79): leave writemac
TRACE (79): enter enqueue
TRACE (79): leave enqueue
TRACE (79): leave encrypt_packet()
TRACE (79): leave send_msg_kexdh_reply
TRACE (79): enter send_msg_newkeys
TRACE (79): enter encrypt_packet()
TRACE (79): encrypt_packet type is 21
TRACE (79): enter writemac
TRACE (79): leave writemac
TRACE (79): enter enqueue
TRACE (79): leave enqueue
TRACE (79): leave encrypt_packet()
TRACE (79): SENTNEWKEYS=1
TRACE (79): -> MSG_NEWKEYS
TRACE (79): leave send_msg_newkeys
TRACE (79): leave recv_msg_kexdh_init
TRACE (79): leave process_packet
TRACE (79): maybe_empty_reply_queue - no data allowed
TRACE (79): enter write_packet
TRACE (79): leave write_packet
TRACE (79): enter read_packet
TRACE (79): enter decrypt_packet
TRACE (79): leave decrypt_packet
TRACE (79): leave read_packet
TRACE (79): enter process_packet
TRACE (79): process_packet: packet type = 2
TRACE (79): leave process_packet
TRACE (79): maybe_empty_reply_queue - no data allowed
TRACE (79): enter write_packet
TRACE (79): empty queue dequeing
TRACE (79): leave write_packet
TRACE (79): enter read_packet
TRACE (79): enter decrypt_packet
TRACE (79): leave decrypt_packet
TRACE (79): leave read_packet
TRACE (79): enter process_packet
TRACE (79): process_packet: packet type = 21
TRACE (79): <- MSG_NEWKEYS
TRACE (79): enter recv_msg_newkeys
TRACE (79): while SENTNEWKEYS=1
TRACE (79): enter gen_new_keys
TRACE (79): enter buf_putmpint
TRACE (79): leave buf_putmpint
TRACE (79): leave gen_new_keys
TRACE (79): kexinitialise()
TRACE (79): -> DATAALLOWED=1
TRACE (79): leave recv_msg_newkeys
TRACE (79): leave process_packet
TRACE (79): enter read_packet
TRACE (79): enter decrypt_packet
TRACE (79): leave decrypt_packet
TRACE (79): leave read_packet
TRACE (79): enter process_packet
TRACE (79): process_packet: packet type = 5
TRACE (79): enter recv_msg_service_request
TRACE (79): accepting service ssh-userauth
TRACE (79): enter encrypt_packet()
TRACE (79): encrypt_packet type is 6
TRACE (79): enter writemac
TRACE (79): leave writemac
TRACE (79): enter enqueue
TRACE (79): leave enqueue
TRACE (79): leave encrypt_packet()
TRACE (79): leave recv_msg_service_request: done ssh-userauth
TRACE (79): leave process_packet
TRACE (79): enter write_packet
TRACE (79): empty queue dequeing
TRACE (79): leave write_packet
TRACE (79): enter read_packet
TRACE (79): enter decrypt_packet
TRACE (79): leave decrypt_packet
TRACE (79): leave read_packet
TRACE (79): enter process_packet
TRACE (79): process_packet: packet type = 50
TRACE (79): enter recv_msg_userauth_request
TRACE (79): recv_msg_userauth_request: 'none' request
TRACE (79): enter send_msg_userauth_failure
TRACE (79): auth fail: methods 6, 'publickey,password'
TRACE (79): enter encrypt_packet()
TRACE (79): encrypt_packet type is 51
TRACE (79): enter writemac
TRACE (79): leave writemac
TRACE (79): enter enqueue
TRACE (79): leave enqueue
TRACE (79): leave encrypt_packet()
TRACE (79): leave send_msg_userauth_failure
TRACE (79): leave process_packet
TRACE (79): enter write_packet
TRACE (79): empty queue dequeing
TRACE (79): leave write_packet
TRACE (79): enter read_packet
TRACE (79): enter decrypt_packet
TRACE (79): leave decrypt_packet
TRACE (79): leave read_packet
TRACE (79): enter process_packet
TRACE (79): process_packet: packet type = 2
TRACE (79): leave process_packet
TRACE (79): enter read_packet
TRACE (79): enter decrypt_packet
TRACE (79): leave decrypt_packet
TRACE (79): leave read_packet
TRACE (79): enter process_packet
TRACE (79): process_packet: packet type = 50
TRACE (79): enter recv_msg_userauth_request
TRACE (79): enter checkusername
TRACE (79): shell is /bin/sh
TRACE (79): test shell is '/bin/sh'
TRACE (79): matching shell
TRACE (79): uid = 0
TRACE (79): leave checkusername
[79] Jul 07 15:58:54 password auth succeeded for 'Administrator' from
192.168.1.21:2594
TRACE (79): enter send_msg_userauth_success
TRACE (79): enter encrypt_packet()
TRACE (79): encrypt_packet type is 52
TRACE (79): enter writemac
TRACE (79): leave writemac
TRACE (79): enter enqueue
TRACE (79): leave enqueue
TRACE (79): leave encrypt_packet()
TRACE (79): leave send_msg_userauth_success
TRACE (79): leave process_packet
TRACE (79): enter write_packet
TRACE (79): empty queue dequeing
TRACE (79): leave write_packet
TRACE (79): enter read_packet
TRACE (79): enter decrypt_packet
TRACE (79): leave decrypt_packet
TRACE (79): leave read_packet
TRACE (79): enter process_packet
TRACE (79): process_packet: packet type = 2
TRACE (79): leave process_packet
TRACE (79): enter read_packet
TRACE (79): enter decrypt_packet
TRACE (79): leave decrypt_packet
TRACE (79): leave read_packet
TRACE (79): enter process_packet
TRACE (79): process_packet: packet type = 90
TRACE (79): enter recv_msg_channel_open
TRACE (79): matched type 'session'
TRACE (79): enter newchannel
TRACE (79): leave newchannel
TRACE (79): enter send_msg_channel_open_confirmation
TRACE (79): enter encrypt_packet()
TRACE (79): encrypt_packet type is 91
TRACE (79): enter writemac
TRACE (79): leave writemac
TRACE (79): enter enqueue
TRACE (79): leave enqueue
TRACE (79): leave encrypt_packet()
TRACE (79): leave send_msg_channel_open_confirmation
TRACE (79): leave recv_msg_channel_open
TRACE (79): leave process_packet
TRACE (79): check_close: writefd -2, readfd -2, errfd -1, sent_close 0,
recv_close 0
TRACE (79): writebuf size 0 extrabuf size 0
TRACE (79): sesscheckclose, pid is -1
TRACE (79): sesscheckclose, pid is -1
TRACE (79): enter write_packet
TRACE (79): empty queue dequeing
TRACE (79): leave write_packet
TRACE (79): check_close: writefd -2, readfd -2, errfd -1, sent_close 0,
recv_close 0
TRACE (79): writebuf size 0 extrabuf size 0
TRACE (79): sesscheckclose, pid is -1
TRACE (79): sesscheckclose, pid is -1
TRACE (79): enter read_packet
TRACE (79): enter decrypt_packet
TRACE (79): leave decrypt_packet
TRACE (79): leave read_packet
TRACE (79): enter process_packet
TRACE (79): process_packet: packet type = 98
TRACE (79): enter recv_msg_channel_request
TRACE (79): enter chansessionrequest
TRACE (79): type is pty-req
TRACE (79): enter sessionpty
TRACE (79): enter get_termmodes
TRACE (79): term mode str 0 p->l 46 p->p 46
TRACE (79): leave get_termmodes: empty terminal modes string
TRACE (79): leave sessionpty
TRACE (79): enter send_msg_channel_success
TRACE (79): enter encrypt_packet()
TRACE (79): encrypt_packet type is 99
TRACE (79): enter writemac
TRACE (79): leave writemac
TRACE (79): enter enqueue
TRACmunmap of non-mmaped memory by process 79 (dropbear): 00000018
munmap of non-mmaped memory by process 79 (dropbear): 00000010
E (79): leave enqueue
TRACE (79): leamunmap of non-mmaped memory by process 79 (dropbear):
b8082ce0
ve encrypt_packet()
TRACE (79): leave send_msg_channel_success
TRACE (79): leave chansessionrequest
TRACE (79): leave recv_msg_channel_request
TRACE (79): leave process_packet
TRACE (79): check_close: writefd -2, readfd -2, errfd -1, sent_close 0,
recv_close 0
TRACE (79): writebuf size 0 extrabuf size 0
TRACE (79): sesscheckclose, pid is -1
TRACE (79): sesscheckclose, pid is -1
TRACE (79): enter write_packet
TRACE (79): empty queue dequeing
TRACE (79): leave write_packet
TRACE (79): enter read_packet
TRACE (79): enter decrypt_packet
TRACE (79): leave decrypt_packet
TRACE (79): leave read_packet
TRACE (79): enter process_packet
TRACE (79): process_packet: packet type = 98
TRACE (79): enter recv_msg_channel_request
TRACE (79): enter chansessionrequest
TRACE (79): type is x11-req
TRACE (79): setnonblocking: 8
TRACE (79): leave setnonblocking
TRACE (79): new listener num 0
TRACE (79): enter send_msg_channel_success
TRACE (79): enter encrypt_packet()
TRACE (79): encrypt_packet type is 99
TRACE (79): enter writemac
TRACE (79): leave writemac
TRACE (79): enter enqueue
TRACE (79): leave enqueue
TRACE (79): leave encrypt_packet()
TRACE (79): leave send_msg_channel_success
TRACE (79): leave chansessionrequest
TRACE (79): leave recv_msg_channel_request
TRACE (79): leave process_packet
TRACE (79): check_close: writefd -2, readfd -2, errfd -1, sent_close 0,
recv_close 0
TRACE (79): writebuf size 0 extrabuf size 0
TRACE (79): sesscheckclose, pid is -1
TRACE (79): sesscheckclose, pid is -1
TRACE (79): enter write_packet
TRACE (79): empty queue dequeing
TRACE (79): leave write_packet
TRACE (79): enter read_packet
TRACE (79): enter decrypt_packet
TRACE (79): leave decrypt_packet
TRACE (79): leave read_packet
TRACE (79): enter process_packet
TRACE (79): process_packet: packet type = 98
TRACE (79): enter recv_msg_channel_request
TRACE (79): enter chansessionrequest
TRACE (79): type is shell
TRACE (79): enter sessioncommand
TRACE (79): enter ptycommand
TRACE (80): back to normal sigchld
TRACE (79): enter sigchld handler
TRACE (79): sigchld handler: pid 80
TRACE (79): using lastexit
TRACE (79): leave sigchld handler
TRACE (79): continue ptycommand: parent
TRACE (79): setnonblocking: 6
TRACE (79): leave setnonblocking
TRACE (79): leave ptycommand
TRACE (79): enter send_msg_channel_success
TRACE (79): enter encrypt_packet()
TRACE (79): encrypt_packet type is 99
[79] Jul 07 15:58:55 exit after auth (Administrator): bad buf_incrlen
TRACE (79): enter session_cleanup
TRACE (79): enter chancleanup
TRACE (79): channel 0 closing
TRACE (79): enter remove_channel
TRACE (79): channel index is 24
TRACE (79): CLOSE writefd 16
TRACE (79): CLOSE readfd 24
TRACE (79): CLOSE errfd 24
TRACE (79): leave remove_channel
TRACE (79): leave chancleanup
TRACE (79): leave session_cleanup
#
Steve Spano, President
Finger Lakes Engineering
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