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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