Re: (ITS#5261) Samba4 can 'hang' OpenLDAP slapd

[hyc@symas.com]

Andrew Bartlett wrote:
> On Tue, 2007-12-11 at 14:22 -0800, Howard Chu wrote:
>> Andrew Bartlett wrote:
>>> I wonder if there is a known issue with db 4.6 and OpenLDAP, as Fedora's
>>> OpenLDAP seems to include it's own libslapd_db-4.4.so (it has a
>>> slapd_db_stat to match, for 4.4).
>> I think they packaged that to avoid using BDB 4.3 which was known to be
>> broken. I've been using OpenLDAP with BDB 4.6.1 thru 4.6.3, and 4.6.18 thru
>> 4.6.21 without any trouble.
> 
> Where there any further clues on my deadlock in the db_stat output?

I've just built Samba4 from svn and tried to run this test, but it fails much 
earlier on my AMD64 system. It looks like your ldbsearch client is generating 
an invalid request, perhaps it's not 64-bit aware.

In st/dc/private/ldap/logs I see:

 >>> 
slap_listener(ldapi://%2Fhome%2Fsoftware%2FSAMBA_4_0%2Fsource%2Fst%2Fdc%2Fprivate%2Fldap%2Fldapi)
daemon: activity on 1 descriptor
daemon: activity on:
daemon: epoll: listen=7 active_threads=0 tvp=NULL
daemon: listen=7, new connection on 20
daemon: activity on 1 descriptor
daemon: activity on: 20r
daemon: read active on 20
daemon: added 20r (active) listener=(nil)
daemon: epoll: listen=7 active_threads=0 tvp=NULL
connection_get(20)
connection_get(20): got connid=0
connection_read(20): checking for input on id=0
ber_get_next
ldap_read: want=8, got=8
   0000:  80 04 00 0a 01 00 0a 01                            ........
ber_get_next on fd 20 failed errno=34 (Numerical result out of range)
connection_read(20): input error=-2 id=0, closing.

All LDAP requests should begin with 0x30, the BER Sequence tag.

-- 
   -- Howard Chu
   Chief Architect, Symas Corp.  http://www.symas.com
   Director, Highland Sun        http://highlandsun.com/hyc/
   Chief Architect, OpenLDAP     http://www.openldap.org/project/