Thanks.
Do you think the fact that 32bit version is working fine (more or less)
and the previous ssh 64 bit version (I suspect this was the version
before Sep 2019, but I can't say for sure as Cygwin does not leave any
traces of the previous version I used before the upgrade) was working
without any issues still suggests BLODA?
I think logically this is caused by new ssh version (which probably
interfere with some of the other libs) rather than my specific setup. I
mean - setup may cause the issue, but the previous version was working
fine with this setup, so this looks like a regression (i.e. new version
is more demanding or more restrictive in terms of surrounding environment).
Is there a way I can rollback to ssh version before 8.0p1-2 (the oldest
I see now in cygwin64) to prove the point (or at least continue using
the working for me version)?
/From/: Eliot Moss <moss at cs dot umass dot edu>
My cygwins (32 and 64 bit) report exactly the same for uname -a and ssh -V,
yet all works fine for me.
This suggests BLODA or some different networking setup of some kind. Not sure
this positive report narrows down much, but it's a data point for you ...
Eliot Moss
On 14/12/2019 16:12, vadim wrote:
I have just installed the latest cygwin32 and cygwin64 from scratch
into new folders.
Tried ssh client in both.
The result is:
- cygwin32 CYGWIN_NT-6.1-WOW 3.0.7(0.338/5/3) 2019-04-30 18:04 i686
ssh works, but it hangs after I disconnect myself. I have to kill ssh
process to continue the cygwin session.
- cygwin64 CYGWIN_NT-6.1-WOW 3.0.7(0.338/5/3) 2019-04-30 18:04 x86_64
ssh dies immediately after the connection is established using
ssh-keys (i.e. after a successful login)
Both has version:
OpenSSH_8.1p1, OpenSSL 1.1.1d 10 Sep 2019
Vadim
On 14/12/2019 14:08, vadim wrote:
Hi,
I have recently upgraded Cygwin packages. After the upgrade ssh
client stopped working.
It connects and logins using ssh keys as normal, but then the
connection is immediately dropped (ssh client process dies and
segfaults under strace).
This is definitely not the server side issue as I have an old
cygwin32 version (on the same PC) where ssh client logins to the same
server with the same ssh-keys just fine.
I am also able to connect using putty with same ssh-keys.
I was trying to rollback my installation of Cygwin, but unfortunately
setup-x86_64.exe does not offer this possibility.
Please help me rolling back to some version of Cygwin where ssh
client is working.
I tried all 3 versions of ssh and ssl that are available. Tried
re-installing OpenSSH and OpenSSL packages, but nothing helps.
This 64-bit latest version is not working:
$ ssh -V
OpenSSH_8.1p1, OpenSSL 1.1.1d 10 Sep 2019
This is working 32bit version:
$ ssh -V
OpenSSH_6.1p1, OpenSSL 1.0.1e 11 Feb 2013
ssh session logs attached:
ssh-session-1.log - connection to host in known_hosts - without
questions, login is ok, then immediate disconnect.
ssh-session-1.vvv.log - same but ssh -vvv option used
ssh-session-1-strace.log - same under strace
ssh-V.strace.log - running ssh -V and strace ssh -V (which also crashes)
see also cygcheck.out
thanks in advance for any help,
Vadim Goryunov
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