[Bug 3848] New: regress/connect-bigconf.sh fails in the github action check for 4 of macos-14 and macos-15

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3848

            Bug ID: 3848
           Summary: regress/connect-bigconf.sh fails in the github action
                    check for 4 of macos-14 and macos-15
           Product: Portable OpenSSH
           Version: -current
          Hardware: ARM64
                OS: Mac OS X
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Regression tests
          Assignee: unassigned-bugs at mindrot.org
          Reporter: jgilab at gmail.com

Since on or about July 4 with the introduction of
regress/connect-bigconf.sh these tests fail in the github actions
check.

Example:
https://github.com/openssh/openssh-portable/actions/runs/16087394976/job/45400204229

A link to the specific error message is:
https://github.com/openssh/openssh-portable/actions/runs/16087394976/job/45400204229#step:13:266

An extract from the sshd log:

```
debug3: mm_request_receive: entering [preauth]
debug3: mm_request_receive: entering
debug3: monitor_read: checking request 8
debug3: mm_answer_pwnamallow: entering
debug2: parse_server_config_depth: config reprocess config len 670977
debug3: checking match for 'group NONEXIST' user runner host 127.0.0.1
addr 127.0.0.1 laddr 127.0.0.1 lport 4242 on line 20
getgrouplist: groups list too small
debug1: do_cleanup
debug1: Killing privsep child 62310
FAIL: ssh direct connect with large sshd_config failed
```

The specific build artifact with all logs is here:
https://github.com/openssh/openssh-portable/actions/runs/16087394976/artifacts/3469614646

I don't have an Mac OS X machine available, so I can't debug further.

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