git clone fails with error chmod on config.lock failed: Invalid argument

Tomas Jura
Tue Apr 19 13:30:00 GMT 2016


My passwd and groups files got automatically renamed. I can't identify 
the exact date. Last update of cygwin I did yesterday, but the rename 
could happen a long time ago.

 > ls  passwd* groups*
passwd.backup groups.backup

 > groups
groups: cannot find name for group ID 10749228312
10749228312 ZTB+Group(513) Administrators Users ..... ZTB+Group(1298252)...

ZTB is my AD domain. Seems that any of the groups that I have assigned 
on the domain level was not resolved.

In the old groups.backup there is a record:

BTW: My machine is Windows Server 2008, yesterday I also run the Windows 
update procedure before I notified the chmod error.
A months ago, I had to migrate to the new AD account. The cygwin was 
installed using my old account, which is deleted now. Is it possible 
that the query to AD runs under my old account?


On 04/19/2016 10:11 AM, Corinna Vinschen wrote:
> On Apr 19 09:22, Tomas Jura wrote:
>> Hi
>> I got error  chmod on config.lock failed: Invalid argument and I was able to
>> catch the strace. It is attached.
> What I see from the strace, chmod fails to request group information:
> 299755  597014 [main] chmod 5840 internal_getlogin: group not found in group DB
> So it looks like either your /etc/passwd or your /etc/group file is
> broken.   The new account handling is a bit more sensitive to broken
> passwd and group files.  For more information on the changes in account
> handling see
> For a start, just move both files out of the way, stop your Cygwin
> processes and try again.
> Corinna

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