openldap-bugs October 2007

openldap-bugs@openldap.org

38 participants
215 discussions

Re: (ITS#4860) Sets' enhancement
by ando＠sys-net.it 24 Oct '07

24 Oct '07

jclarke(a)linagora.com wrote: > Got this one: it was a double-free in sets.c occuring after a > slap_set_join() with lset or rset empty - the non empty set was > returned, and then freed, causing a double-free error or segfault. > > The patch attached corrects this problem on RE23 and HEAD for me and > doesn't have any side effects on our test set. However, it may not be > the "right" way - please correct if necessary! It seems to work correctly, but there seems to be an easier fix: just NULL out the pointer to lset/rset, respectively. I'm patching the code this way, please test if you get a chance. Thanks, p. Ing. Pierangelo Masarati OpenLDAP Core Team SysNet s.r.l. via Dossi, 8 - 27100 Pavia - ITALIA http://www.sys-net.it --------------------------------------- Office: +39 02 23998309 Mobile: +39 333 4963172 Email: pierangelo.masarati(a)sys-net.it ---------------------------------------

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Re: (ITS#5198) wrong SQL-Statements in Back-SQL
by ando＠sys-net.it 24 Oct '07

24 Oct '07

peter.gietz(a)daasi.de wrote: > This bug report was given to me at the OpenLDAP booth on the Systems in Munich. > > SQL search-statements are wrong because of a strange OR condition: > "(2=2 OR (ldap_entries.id=ldap_entry_objclasses.entry_id AND > ldap_entry_objclasses.oc_name='" > > So instead of a subset, all data are included in the response. It is not a bug, but rather an easy means to indicate that the whole data should be returned to the frontend in order to filter it the LDAP way, since sub-classing might be involved. If that user doesn't want searches for (objectClass=person) to return objects with objectClass=inetOrgPerson, then he shouldn't be using LDAP. > Thats what the > guy, who was too lazy to make the bug report himself told me. He also told me > that he patched his code (by deleting the condition (2=2) and is happy for > now. Well, you see: open source software makes people happy. As a side note, usually, well-designed RDBMSes understand that 2=2 is always true and do not proceed any further in evaluating other clauses in the OR. For those RDBMSes this causes a performance degradation (and, I insist, it would be the RDBMS' fault) the only **improvement** to OpenLDAP's back-sql (no bug) could consist in detecting that condition ourselves and omit that part of the WHERE clause entirely. But this would probably require to rewrite the filter translation layer, and it's not something I plan to do any soon (unless rewarded enough to distract me from other issues, I mean). p. Ing. Pierangelo Masarati OpenLDAP Core Team SysNet s.r.l. via Dossi, 8 - 27100 Pavia - ITALIA http://www.sys-net.it --------------------------------------- Office: +39 02 23998309 Mobile: +39 333 4963172 Email: pierangelo.masarati(a)sys-net.it ---------------------------------------

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Re: (ITS#5197) result.c uses ldap_pvt_thread_pool_query indiscriminately
by hyc＠symas.com 23 Oct '07

23 Oct '07

richton(a)nbcs.rutgers.edu wrote: > Full_Name: Aaron Richton > Version: RE24 > OS: irrelevant > URL: ftp://ftp.openldap.org/incoming/ > Submission from: (NULL) (128.6.31.135) > > > ldap_pvt_thread_pool_query is referenced even if --without-threads. I believe > this is as simple as... Thanks for the report. > > --- result.c~ 2007-10-23 09:53:36.646614000 -0400 > +++ result.c 2007-10-23 09:53:23.640874000 -0400 > @@ -743,12 +743,14 @@ > return LDAP_SIZELIMIT_EXCEEDED; > } > > +#ifndef NO_THREADS > /* Every 64 entries, check for thread pool pause */ > if (( rs->sr_nentries & 0x3f == 0x3f ) && > ldap_pvt_thread_pool_query( &connection_pool, > LDAP_PVT_THREAD_POOL_PARAM_PAUSING, &i ) == 0 && i ) { > return LDAP_BUSY; > } > +#endif > > rs->sr_type = REP_SEARCH; > > > > . > -- -- 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/

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(ITS#5198) wrong SQL-Statements in Back-SQL
by peter.gietz＠daasi.de 23 Oct '07

23 Oct '07

Full_Name: Peter Gietz Version: 2.3.38 OS: Linux URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (84.154.95.209) This bug report was given to me at the OpenLDAP booth on the Systems in Munich. SQL search-statements are wrong because of a strange OR condition: "(2=2 OR (ldap_entries.id=ldap_entry_objclasses.entry_id AND ldap_entry_objclasses.oc_name='" So instead of a subset, all data are included in the response. Thats what the guy, who was too lazy to make the bug report himself told me. He also told me that he patched his code (by deleting the condition (2=2) and is happy for now. If you think this is a bug, please repair. I found this in the source code (.../slapd/back-sql/search.c (lines 780-805): (not sure if this is the only occurance) /* * "structural" objectClass inheritance: * - a search for "person" will also return * "inetOrgPerson" * - a search for "top" will return everything */ if ( is_object_subclass( oc, bsi->bsi_oc->bom_oc ) ) { static struct berval ldap_entry_objclasses = BER_BVC( "ldap_entry_objclasses" ); backsql_merge_from_tbls( bsi, &ldap_entry_objclasses ); backsql_strfcat_x( &bsi->bsi_flt_where, bsi->bsi_op->o_tmpmemctx, "lbl", (ber_len_t)STRLENOF( "(2=2 OR (ldap_entries.id=ldap_entry_objclasses.entry_id AND ldap_entry_objclasses.oc_name='" /* ')) */ ), "(2=2 OR (ldap_entries.id=ldap_entry_objclasses.entry_id AND ldap_entry_objclasses.oc_name='" /* ')) */, &bsi->bsi_oc->bom_oc->soc_cname, (ber_len_t)STRLENOF( /* ((' */ "'))" ), /* ((' */ "'))" ); bsi->bsi_status = LDAP_SUCCESS; rc = 1; goto done; } break; }

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(ITS#5197) result.c uses ldap_pvt_thread_pool_query indiscriminately
by richton＠nbcs.rutgers.edu 23 Oct '07

23 Oct '07

Full_Name: Aaron Richton Version: RE24 OS: irrelevant URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (128.6.31.135) ldap_pvt_thread_pool_query is referenced even if --without-threads. I believe this is as simple as... --- result.c~ 2007-10-23 09:53:36.646614000 -0400 +++ result.c 2007-10-23 09:53:23.640874000 -0400 @@ -743,12 +743,14 @@ return LDAP_SIZELIMIT_EXCEEDED; } +#ifndef NO_THREADS /* Every 64 entries, check for thread pool pause */ if (( rs->sr_nentries & 0x3f == 0x3f ) && ldap_pvt_thread_pool_query( &connection_pool, LDAP_PVT_THREAD_POOL_PARAM_PAUSING, &i ) == 0 && i ) { return LDAP_BUSY; } +#endif rs->sr_type = REP_SEARCH;

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Re: (ITS#5163) slapd segfaults when running as proxy-caching server
by toby＠inf.ed.ac.uk 23 Oct '07

23 Oct '07

I said: > I'll patch and report back. Apologies for the delaying in confirming... Yep, this fixed the problem I was seeing. Many thanks Toby

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Re: (ITS#5187) test020-proxycache failing in RE_2_4
by rhafer＠suse.de 23 Oct '07

23 Oct '07

On Dienstag, 23. Oktober 2007, Howard Chu wrote: > rhafer(a)suse.de wrote: > > On Dienstag, 23. Oktober 2007, ando(a)sys-net.it wrote: > >> For the records: I seem to be ble to consistently reproduce the issue > >> when running slapd under valgrind; > > > > Thanks, that seems to do the trick for me as well. > > Funny, even running either slapd.1 or slapd.2 under valgrind, it still > succeeds for me. > > >> I haven't seen it yet when running the test > >> regularly (single CPU i386, recently). > > Looking at Gavin's testrun files, diffing slapd.2.log against a successful > run, the main difference I see is that on the failed run some queries get > added into the cache later than in the successful run. As such, the > difference comes down to whether the pcache thread gets to run before the > next query arrives or not. So, still non-deterministic and not really a big > deal. Ok, so it's most probably really the same issue as in ITS#5114 Followup 20. The non-deterministic behaviour got introduced by moving the actual caching of the entries to the cleanup handler. As a result of this, the ldapsearch commands in the test suite finishes (and the next operations start) before the data has been completely cached. Which I think is not a bug. Any ideas how we could fix the test without introducing any sleep calls to it? -- Ralf

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Re: (ITS#5187) test020-proxycache failing in RE_2_4
by hyc＠symas.com 23 Oct '07

23 Oct '07

rhafer(a)suse.de wrote: > On Dienstag, 23. Oktober 2007, ando(a)sys-net.it wrote: >> For the records: I seem to be ble to consistently reproduce the issue when >> running slapd under valgrind; > Thanks, that seems to do the trick for me as well. Funny, even running either slapd.1 or slapd.2 under valgrind, it still succeeds for me. >> I haven't seen it yet when running the test >> regularly (single CPU i386, recently). Looking at Gavin's testrun files, diffing slapd.2.log against a successful run, the main difference I see is that on the failed run some queries get added into the cache later than in the successful run. As such, the difference comes down to whether the pcache thread gets to run before the next query arrives or not. So, still non-deterministic and not really a big deal. -- -- 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/

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Re: (ITS#5187) test020-proxycache failing in RE_2_4
by rhafer＠suse.de 23 Oct '07

23 Oct '07

As discussed on committers, I have disabled the failing part of the test for now in RE24. (Should be re-enabled when the root-cause of this problem is fixed) -- Ralf

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Re: (ITS#5187) test020-proxycache failing in RE_2_4
by rhafer＠suse.de 23 Oct '07

23 Oct '07

On Dienstag, 23. Oktober 2007, ando(a)sys-net.it wrote: > For the records: I seem to be ble to consistently reproduce the issue when > running slapd under valgrind; Thanks, that seems to do the trick for me as well. > I haven't seen it yet when running the test > regularly (single CPU i386, recently). -- Ralf

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openldap-bugs October 2007