(ITS#4920) bad connection sequencing

[h.b.furuseth@usit.uio.no]

Full_Name: Hallvard B Furuseth
Version: HEAD
OS: Linux
URL: http://folk.uio.no/hbf/OpenLDAP/bug032.tgz
Submission from: (NULL) (129.240.202.105)
Submitted by: hallvard


Statslog() from even  successful tests can show strange sequencing.

grep '^conn=' testrun/slapd.*.log from a test032-chain run shows
- Operations logged on connections before ACCEPT
  (slapd.1.log conn=2,3 + slapd.2.log conn=7,9)
- Operations on a connection with no ACCEPT (slapd.1.log conn=10),
  but a 'conn=-1 fd=21 ACCEPT' _after_ that fd's 'close',
  and valgrind shows memory errors between the close and the ACCEPT.
The enclosed URL gives the testrun directory and test output.

Similar things show up in other tests.  A test019 run with a
conn=-1 ACCEPT did not get valgrind memory compaints though.
grep 'conn=-1' testrun/slapd.*.log also found a number of
   send_ldap_result: conn=-1 op=0 p=<0 or 3>
even in logs without any conn=-1, but maybe that's a "fake
connection"?  Don't know why results are sent though.