1.5.25: Intermittent hangs or network issues

Jim Marshall jim.marshall@wbemsolutions.com
Fri May 8 17:25:00 GMT 2009 

Larry Hall (Cygwin) wrote:
> Jim Marshall wrote:
>> Jim Marshall wrote:
>>> Dave Korn wrote:
>>>> Jim Marshall wrote:
>>>>
>>>>> I do not have any firewall software running, 
>>>>
>>>>> Potential app conflicts:
>>>>>
>>>>> ZoneAlarm Personal Firewall
>>>>> Detected: HKLM Registry Key, Named file.
>>>>
>>>>
>>>>   Do you possibly suffer from the Cisco VPN client software that 
>>>> comes with a
>>>> built-in version of the core ZA firewall component?
>>>>
>>>>     cheers,
>>>>       DaveK
>>>>
>>> Hi Dave et al,
>>>  I removed the cisco VPN, but I am still seeing the hangs. Also I 
>>> guess I spoke too soon about other apps not hanging as I have noticed 
>>> xemacs and xterm hanging when starting (the GUI doesn't open but 
>>> ctrl-c works to quit them from the terminal I started them from) - it 
>>> is also happens far less often then ssh and cvs.
>>>
>>> I've attached a new cygcheck, I know it still says that the zone 
>>> alarm entry is still present but I don't know of any app that is 
>>> using it and I don't see any processes running, so I am a bit of a 
>>> loss as to why that is there.
>>>
>>> Thanks again
> 
> Maybe a short output file from strace would help point a finger.  And
> maybe not. ;-)
> 

Finally got around to doing the strace...

$ strace ssh mythtv@mythtv
**********************************************
Program name: C:\cygwin\bin\ssh.exe (pid 6028, ppid 1)
App version:  1005.25, api: 0.156
DLL version:  1005.25, api: 0.156
DLL build:    2008-06-12 19:34
OS version:   Windows NT-5.1
Heap size:    402653184
Date/Time:    2009-05-08 13:17:17
**********************************************
<stuff removed>
  2179  275368 [main] ssh 6028 wsock_init: res 0
    42  275410 [main] ssh 6028 wsock_init: wVersion 514
    32  275442 [main] ssh 6028 wsock_init: wHighVersion 514
    31  275473 [main] ssh 6028 wsock_init: szDescription WinSock 2.0
    30  275503 [main] ssh 6028 wsock_init: szSystemStatus Running
    30  275533 [main] ssh 6028 wsock_init: iMaxSockets 0
    30  275563 [main] ssh 6028 wsock_init: iMaxUdpDg 0
    30  275593 [main] ssh 6028 wsock_init: lpVendorInfo 0
  6733  282326 [main] ssh 6028 __set_errno: void 
__set_winsock_errno(const char*, int):234 val 1
   382  282708 [main] ssh 6028 __set_winsock_errno: __dup_ent:334 - 
winsock error 11004 -> errno 1
    36  282744 [main] ssh 6028 cygwin_getservbyname: 0x0 = getservbyname 
(ssh, tcp)
    49  282793 [main] ssh 6028 sig_send: sendsig 0x6E8, pid 6028, signal 
-34, its_me 1
    32  282825 [main] ssh 6028 sig_send: wakeup 0x6B0
    31  282856 [main] ssh 6028 sig_send: Waiting for pack.wakeup 0x6B0
   799  283655 [sig] ssh 6028 wait_sig: signalling pack.wakeup 0x6B0
   723  284378 [main] ssh 6028 sig_send: returning 0x0 from sending 
signal -34
   560  284938 [main] ssh 6028 __dup_ent: duping hostent "mythtv", 
0x18BA6CA0
    90  285028 [main] ssh 6028 __dup_ent: duped hostent "mythtv", 0x6ACCC8
    38  285066 [main] ssh 6028 cygwin_gethostbyname: h_name mythtv
  1032  286098 [main] ssh 6028 cygwin_socket: socket (2, 1, 0)
  5937  292035 [main] ssh 6028 fdsock: reset socket inheritance
   126  292161 [main] ssh 6028 build_fh_pc: fh 0x61169E50
   104  292265 [main] ssh 6028 fhandler_base::set_flags: flags 0x10002, 
supplied_bin 0x0
   124  292389 [main] ssh 6028 fhandler_base::set_flags: O_TEXT/O_BINARY 
set in flags 0x10000
   385  292774 [main] ssh 6028 fhandler_base::set_flags: filemode set to 
binary
   290  293064 [main] ssh 6028 fdsock: fd 3, name '', soc 0x6B4
   514  293578 [main] ssh 6028 cygwin_socket: 3 = socket (2, 1, 0)
  1223  294801 [main] ssh 6028 sig_send: sendsig 0x6E8, pid 6028, signal 
-34, its_me 1
    60  294861 [main] ssh 6028 sig_send: wakeup 0x69C
    34  294895 [main] ssh 6028 sig_send: Waiting for pack.wakeup 0x69C
   305  295200 [sig] ssh 6028 wait_sig: signalling pack.wakeup 0x69C
    51  295251 [main] ssh 6028 sig_send: returning 0x0 from sending 
signal -34
    72  295323 [main] ssh 6028 fhandler_socket::ioctl: socket is now 
nonblocking
    39  295362 [main] ssh 6028 fhandler_socket::ioctl: 0 = ioctl_socket 
(8004667E, 23B80C)
   979  296341 [main] ssh 6028 __set_errno: void 
__set_winsock_errno(const char*, int):234 val 119
    50  296391 [main] ssh 6028 __set_winsock_errno: connect:788 - 
winsock error 10036 -> errno 119
    44  296435 [main] ssh 6028 cygwin_select: 4, 0x0, 0x23B7C0, 
0x23B7A0, 0x0
    88  296523 [main] ssh 6028 dtable::select_write:  fd 3
    43  296566 [main] ssh 6028 dtable::select_except:  fd 3
    51  296617 [main] ssh 6028 cygwin_select: to NULL, ms FFFFFFFF
    43  296660 [main] ssh 6028 cygwin_select: sel.always_ready 0
    74  296734 [main] ssh 6028 start_thread_socket: Handle 0x6B4
    38  296772 [main] ssh 6028 start_thread_socket: Added to writefds
    40  296812 [main] ssh 6028 start_thread_socket: Added to exceptfds
  2983  299795 [main] ssh 6028 start_thread_socket: opened new socket 0x688
    52  299847 [main] ssh 6028 start_thread_socket: exitsock 0x688
    41  299888 [main] ssh 6028 start_thread_socket: stuff_start 0x23B724
   308  300196 [select_socket] ssh 6028 cygthread::stub: thread 
'select_socket', id 0x17B4, stack_ptr 0x190ACDC0
    49  300245 [select_socket] ssh 6028 thread_socket: stuff_start 0x6AFE64
    47  300292 [main] ssh 6028 select_stuff::wait: m 2, ms 4294967295
    65  300357 [select_socket] ssh 6028 thread_socket: Win32 select 
returned 1
    39  300396 [select_socket] ssh 6028 thread_socket: s 0x6ACE20, 
testing fd 3 ()
    43  300439 [select_socket] ssh 6028 thread_socket: write_ready
    41  300480 [main] ssh 6028 select_stuff::wait: woke up.  wait_ret 1. 
  verifying
    43  300523 [main] ssh 6028 select_stuff::wait: gotone 1
    42  300565 [main] ssh 6028 select_stuff::wait: returning 0
    38  300603 [main] ssh 6028 select_stuff::cleanup: calling cleanup 
routines
    39  300642 [main] ssh 6028 socket_cleanup: si 0x6ACE50 si->thread 
0x61106F30
    85  300727 [main] ssh 6028 socket_cleanup: sent a byte to exitsock 
0x688, res -1
    83  300810 [main] ssh 6028 socket_cleanup: reading a byte from 
exitsock 0x688

300002303 300303113 [unknown (0x1424)] ssh 6028 _cygtls::remove: wait 0x0
   112 300303225 [unknown (0x1424)] ssh 6028 _cygtls::remove: removed 
0x18EACE64 element 1


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