Re: Cygwin 3.4.9 - how to install ssh-keygen

[Brian Inglis <Brian.Inglis@Shaw.ca>]

On 2023-11-29 14:13, Jose Isaias Cabrera via Cygwin wrote:
> On Monday, November 27, 2023 02:46 AM, Matthias--- expressed:
>>
>> Am Sonntag, dem 26.11.2023 um 12:21 -0700 schrieb Brian Inglis via Cygwin:
>>> On 2023-11-26 10:12, Matthias--- via Cygwin wrote:
>>>> Am Samstag, dem 25.11.2023 um 19:45 +0100 schrieb ASSI via Cygwin:
>>>>> Matthias--- via Cygwin writes:
>>>>>> Yes - That's the reason in my VM too:
>>>>>>      strace ssh-keygen -A
> 
>> A/V is Antivirus? My VM is running Avira. Deactivating it
>> haven't impact on ssh-keygen. I still have
>> an Segmentation fault.
> 
> Pardon the high jacking of this threat, but I may have the same problem (or, at least, it's related). I can start another thread if it is desired...
> 
> I am having the same problem with ssh. So, a little history... This is a fresh Windows 11 Cygwin installation. Everything works great, except using ssh. For example, when I type,
> 
> jcabrera@jicman ~
> $ ssh jic@web
> 
> jcabrera@jicman ~
> $
> 
> I get the prompt right away. I found out that Windows 11 comes with OpenSSH installed. I uninstalled it, rebooted, and reinstalled cygwin's openssh, and the problem is still there. I don't have any antivirus, except Microsoft's Defender, but I added two folder exclussions (c:\cygwin64 and the download folder for xmission download site). The strace of ssh is pretty long:
> 
> == beg strace ssh ==
> $ strace ssh
> --- Process 23800 created
> --- Process 23800 loaded C:\Windows\System32\ntdll.dll at 00007ffe22410000
> --- Process 23800 loaded C:\Windows\System32\kernel32.dll at 00007ffe20e20000
> --- Process 23800 loaded C:\Windows\System32\KernelBase.dll at 00007ffe1f780000
> --- Process 23800 loaded C:\cygwin64\bin\cygcrypto-1.1.dll at 00000003f6ce0000
> --- Process 23800 loaded C:\cygwin64\bin\cygwin1.dll at 00007ffd8efa0000
> --- Process 23800 loaded C:\cygwin64\bin\cyggssapi_krb5-2.dll at 00000003f40d0000
> --- Process 23800 loaded C:\cygwin64\bin\cygz.dll at 00000003ee230000
> --- Process 23800 loaded C:\cygwin64\bin\cyggcc_s-seh-1.dll at 00000003f4c30000
> --- Process 23800 loaded C:\cygwin64\bin\cygk5crypto-3.dll at 00000003f0f00000
> --- Process 23800 loaded C:\cygwin64\bin\cygkrb5-3.dll at 00000003f0e30000
> --- Process 23800 loaded C:\cygwin64\bin\cygkrb5support-0.dll at 00000003f0e10000
> --- Process 23800 loaded C:\cygwin64\bin\cygcom_err-2.dll at 00000003f7240000
> --- Process 23800 loaded C:\cygwin64\bin\cygintl-8.dll at 00000003f12e0000
> --- Process 23800 loaded C:\cygwin64\bin\cygiconv-2.dll at 00000003f3170000
>      1       1 [main] ssh (23800) **********************************************
>     94      95 [main] ssh (23800) Program name: C:\cygwin64\bin\ssh.exe (windows pid 23800)
>     59     154 [main] ssh (23800) OS version:   Windows NT-10.0
>     78     232 [main] ssh (23800) **********************************************
> --- Process 23800 loaded C:\Windows\System32\advapi32.dll at 00007ffe202b0000
> --- Process 23800 loaded C:\Windows\System32\msvcrt.dll at 00007ffe20d40000
> --- Process 23800 loaded C:\Windows\System32\sechost.dll at 00007ffe203a0000
> --- Process 23800 loaded C:\Windows\System32\rpcrt4.dll at 00007ffe22030000
> --- Process 23800 loaded C:\Windows\System32\cryptbase.dll at 00007ffe1efd0000
> --- Process 23800 loaded C:\Windows\System32\bcryptprimitives.dll at 00007ffe1fc50000
>   9439    9671 [main] ssh (23800) sigprocmask: 0 = sigprocmask (0, 0x0, 0x7FFD8F2793B0)
>    439   10110 [main] ssh (23800) open_shared: name shared.5, shared 0x1A0000000 (wanted 0x1A0000000), h 0x118, m 0, created 0
>    152   10262 [main] ssh (23800) user_heap_info::init: heap base 0xA00000000, heap top 0xA00000000, heap size 0x20000000 (536870912)
>     76   10338 [main] ssh (23800) open_shared: name S-1-5-21-1074337292-3126344265-1178006881-1002.1, shared 0x1A1000000 (wanted 0x1A1000000), h 0x114, m 1, created 0
>     87   10425 [main] ssh (23800) user_info::create: opening user shared for 'S-1-5-21-1074337292-3126344265-1178006881-1002' at 0x1A1000000
>     73   10498 [main] ssh (23800) user_info::create: user shared version AB1FCCE8
>     74   10572 [main] ssh (23800) fhandler_pipe::create: name \\.\pipe\cygwin-e022582115c10879-23800-sigwait, size 11440, mode PIPE_TYPE_MESSAGE
>     86   10658 [main] ssh (23800) fhandler_pipe::create: pipe read handle 0x12C
>     52   10710 [main] ssh (23800) fhandler_pipe::create: CreateFile: name \\.\pipe\cygwin-e022582115c10879-23800-sigwait
>     71   10781 [main] ssh (23800) fhandler_pipe::create: pipe write handle 0x130
>     55   10836 [main] ssh (23800) dll_crt0_0: finished dll_crt0_0 initialization
> --- Process 23800 loaded C:\Program Files (x86)\Citrix\ICA Client\epclient64.dll at 00007ffe00070000
> --- Process 23800 loaded C:\Windows\System32\user32.dll at 00007ffe21e20000
> --- Process 23800 loaded C:\Windows\System32\win32u.dll at 00007ffe20130000
> --- Process 23800 loaded C:\Windows\System32\gdi32.dll at 00007ffe20df0000
> --- Process 23800 loaded C:\Windows\System32\gdi32full.dll at 00007ffe1fea0000
> --- Process 23800 loaded C:\Windows\System32\msvcp_win.dll at 00007ffe1fcd0000
> --- Process 23800 loaded C:\Windows\System32\ucrtbase.dll at 00007ffe1fb30000
> --- Process 23800 loaded C:\Windows\System32\combase.dll at 00007ffe21a90000
> --- Process 23800 loaded C:\Windows\System32\version.dll at 00007ffe0b1f0000
> --- Process 23800 loaded C:\Windows\System32\bcrypt.dll at 00007ffe1f130000
> --- Process 23800 loaded C:\Windows\System32\imm32.dll at 00007ffe204e0000
> --- Process 23800 loaded C:\Windows\System32\ntmarta.dll at 00007ffe1e850000
> --- Process 23800 thread 15480 created
> --- Process 23800 thread 15424 created
> --- Process 23800, exception c0000005 at 00007ffd8f028094
> --- Process 23800 thread 21708 created
> --- Process 23800, exception c0000005 at 00007ffd8efc0a5c
> [clip like entries]
> --- Process 23800, exception c0000005 at 00007ffd8efc0a5c
> --- Process 23800, exception c0000005 at 00007ffd8efc0a5c
> --- Process 23800 thread 15480 exited with status 0x0
> --- Process 23800, exception c0000005 at 00007ffd8efc0a5c
> --- Process 23800, exception c0000005 at 00007ffd8efc0a5c
> [clip]
> --- Process 23800, exception c0000005 at 00007ffd8efc0a5c
> --- Process 23800, exception c0000005 at 00007ffd8efc0a5c
> --- Process 23800 loaded C:\Windows\System32\kernel.appcore.dll at 00007ffe1e7d0000
> --- Process 23800, exception c0000005 at 00007ffd8efc0a5c
> --- Process 23800, exception c0000005 at 00007ffd8efc0a5c
> [clip]
> --- Process 23800, exception c0000005 at 00007ffd8efc0a5c
> --- Process 23800 thread 21708 exited with status 0x0
> --- Process 23800, exception c0000005 at 00007ffd8efc0a5c
> [clip an inmense amount of lines like the one just above this line]
> --- Process 23800, exception c0000005 at 00007ffd8efc0a5c
> --- Process 23800 thread 22168 exited with status 0xc0000005
> --- Process 23800 exited with status 0xc0000005
> Segmentation fault
> 
> jcabrera@jicman ~
> $
> == end strace ssh ==
> 
> This is the version installed:
> $ uname -a
> CYGWIN_NT-10.0-22631 jicman 3.4.10-1.x86_64 2023-11-29 12:12 UTC x86_64 Cygwin
> 
> Here is MS stuff:
> == beg MS Stuff ==
> $ systeminfo
> 
> Host Name:                 JICMAN
> OS Name:                   Microsoft Windows 11 Pro
> OS Version:                10.0.22631 N/A Build 22631
> OS Manufacturer:           Microsoft Corporation
> OS Configuration:          Standalone Workstation
> ==end MS Stuff==

Make sure none of the ssh bits are running and add a system startup scheduled 
task to shut them down and perhaps also start Cygwin services e.g.

$ sc queryex state= all | grep -i ssh 
SERVICE_NAME: ssh-agent
DISPLAY_NAME: OpenSSH Authentication Agent
SERVICE_NAME: sshd
DISPLAY_NAME: OpenSSH SSH Server
SERVICE_NAME: SshdBroker
DISPLAY_NAME: SshdBroker
$ for s in ssh{d,dbroker,-agent}; do sc queryex $s; done

SERVICE_NAME: sshd
         TYPE               : 10  WIN32_OWN_PROCESS
         STATE              : 1  STOPPED
         WIN32_EXIT_CODE    : 1077  (0x435)
         SERVICE_EXIT_CODE  : 0  (0x0)
         CHECKPOINT         : 0x0
         WAIT_HINT          : 0x0
         PID                : 0
         FLAGS              :

SERVICE_NAME: sshdbroker
         TYPE               : 20  WIN32_SHARE_PROCESS
         STATE              : 1  STOPPED
         WIN32_EXIT_CODE    : 1077  (0x435)
         SERVICE_EXIT_CODE  : 0  (0x0)
         CHECKPOINT         : 0x0
         WAIT_HINT          : 0x0
         PID                : 0
         FLAGS              :

SERVICE_NAME: ssh-agent
         TYPE               : 10  WIN32_OWN_PROCESS
         STATE              : 1  STOPPED
         WIN32_EXIT_CODE    : 1077  (0x435)
         SERVICE_EXIT_CODE  : 0  (0x0)
         CHECKPOINT         : 0x0
         WAIT_HINT          : 0x0
         PID                : 0
         FLAGS              :
$ for s in ssh{d,dbroker,-agent}; do
	sc stop		$s
	sleep 1
	net stop	$s
	sleep 1
	sc config	$srv start= disabled
	sc qc		$s
	sc queryex	$s
done

-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer     but when there is no more to cut
                                 -- Antoine de Saint-Exupéry