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Re: (ITS#7954) [LMDB] fix uninitialize struct member.
by jcd＠tribudubois.net 02 Oct '14

02 Oct '14

Le 10/02/2014 10:41 PM, Howard Chu a =E9crit : > jcd(a)tribudubois.net wrote: >> Full_Name: Jean-Christophe Dubois >> Version: 2.4.40 >> OS: Linux >> URL: ftp://ftp.openldap.org/incoming/ >> Submission from: (NULL) (78.235.240.156) >> >> >> In the mdb_env_cwalk() function the mc_flags member of the "mc"=20 >> MDB_cursor >> instance is not initialized. >> >> But in the mdb_page_search_root() called a bit later (line 8407) this=20 >> flag will >> be updated from this uninitialized value. >> >> The mc_flags member needs to be initialized to a known value. > > The mc_flags member is never referenced again, so this is irrelevant. It is referenced here: https://gitorious.org/mdb/mdb/source/61dd017808f66ada27e89c58bc9567d5b2ad= e884:libraries/liblmdb/mdb.c#L5057 This function(mdb_page_search_root()) is called from mdb_env_cwalk()=20 with a reference to mc. and mc_flages is not initialized. JC >> >> Patch available at URL below: >> >> https://github.com/jcdubois/lmdb/commit/57d0d380a18957245c8a011e735649= 09966eb399=20 >> >> >> JC >> >> > >

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(ITS#7955) [LMDB] remove logically dead code
by jcd＠tribudubois.net 02 Oct '14

02 Oct '14

Full_Name: Jean-Christophe Dubois Version: 2.4.40 OS: Linux URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (78.235.240.156) In mdb_cursor_prev() there is some dead code as the (op == MDB_PREV_DUP) cannot be reached in the else block of the following if condition: if (op == MDB_PREV || op == MDB_PREV_DUP) { ... } else { ... if (op == MDB_PREV_DUP) ... } The dead code can be removed. Patch available at the following URL: https://github.com/jcdubois/lmdb/commit/87c58701f7b7226d6d7bcf6be18db085cce… JC

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Re: (ITS#7954) [LMDB] fix uninitialize struct member.
by hyc＠symas.com 02 Oct '14

02 Oct '14

jcd(a)tribudubois.net wrote: > Full_Name: Jean-Christophe Dubois > Version: 2.4.40 > OS: Linux > URL: ftp://ftp.openldap.org/incoming/ > Submission from: (NULL) (78.235.240.156) > > > In the mdb_env_cwalk() function the mc_flags member of the "mc" MDB_cursor > instance is not initialized. > > But in the mdb_page_search_root() called a bit later (line 8407) this flag will > be updated from this uninitialized value. > > The mc_flags member needs to be initialized to a known value. The mc_flags member is never referenced again, so this is irrelevant. > > Patch available at URL below: > > https://github.com/jcdubois/lmdb/commit/57d0d380a18957245c8a011e73564909966… > > JC > > -- -- Howard Chu CTO, 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#7953) [LMDB] Add *.lo to .gitignore
by hyc＠symas.com 02 Oct '14

02 Oct '14

jcd(a)tribudubois.net wrote: > Full_Name: Jean-Christophe Dubois > Version: 2.4.40 > OS: Linux > URL: ftp://ftp.openldap.org/incoming/ > Submission from: (NULL) (78.235.240.156) > > > lmdb build is generating several binary .lo files. Not in 2.4.40. > They should be added to the .gitignore file. Fixed in mdb.master > > Patch available at URL below: > > https://github.com/jcdubois/lmdb/commit/fd1903136e7549dd349bafc4de633c616ef… > > JC > > -- -- Howard Chu CTO, 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#7952) [LMDB] Add mdb_load and mdb_dump to .gitignore
by hyc＠symas.com 02 Oct '14

02 Oct '14

jcd(a)tribudubois.net wrote: > Full_Name: Jean-Christophe Dubois > Version: 2.4.40 > OS: Linux > URL: ftp://ftp.openldap.org/incoming/ > Submission from: (NULL) (78.235.240.156) > > > mdb_load and mdb_dump are 2 binaries that are generated as part of the lmdb > build. > > They should be added to the .gitignore file. Fixed in mdb.master > > Patch available at URL below: > > https://github.com/jcdubois/lmdb/commit/f8367c5ff8dd98c14fece6068ec516ee8db… > > JC > > > > > -- -- Howard Chu CTO, 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#7954) [LMDB] fix uninitialize struct member.
by jcd＠tribudubois.net 02 Oct '14

02 Oct '14

Full_Name: Jean-Christophe Dubois Version: 2.4.40 OS: Linux URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (78.235.240.156) In the mdb_env_cwalk() function the mc_flags member of the "mc" MDB_cursor instance is not initialized. But in the mdb_page_search_root() called a bit later (line 8407) this flag will be updated from this uninitialized value. The mc_flags member needs to be initialized to a known value. Patch available at URL below: https://github.com/jcdubois/lmdb/commit/57d0d380a18957245c8a011e73564909966… JC

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(ITS#7953) [LMDB] Add *.lo to .gitignore
by jcd＠tribudubois.net 02 Oct '14

02 Oct '14

Full_Name: Jean-Christophe Dubois Version: 2.4.40 OS: Linux URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (78.235.240.156) lmdb build is generating several binary .lo files. They should be added to the .gitignore file. Patch available at URL below: https://github.com/jcdubois/lmdb/commit/fd1903136e7549dd349bafc4de633c616ef… JC

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(ITS#7952) [LMDB] Add mdb_load and mdb_dump to .gitignore
by jcd＠tribudubois.net 02 Oct '14

02 Oct '14

Full_Name: Jean-Christophe Dubois Version: 2.4.40 OS: Linux URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (78.235.240.156) mdb_load and mdb_dump are 2 binaries that are generated as part of the lmdb build. They should be added to the .gitignore file. Patch available at URL below: https://github.com/jcdubois/lmdb/commit/f8367c5ff8dd98c14fece6068ec516ee8db… JC

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Re: (ITS#7951) slapd deadlocks during mod operation
by hyc＠symas.com 25 Sep '14

25 Sep '14

christianclinton(a)gmail.com wrote: > Full_Name: Christian Clinton > Version: 2.4.36 > OS: CentOS 6.4 > URL: ftp://ftp.openldap.org/incoming/christian-clinton-140925.zip > Submission from: (NULL) (216.148.0.72) > > > Description: Slapd hangs during LDAP modification operation. Subsequent read or > write operations hang from all clients until slapd restart. 2.4.36 is over a year old. Bugs reported against old releases will not be investigated. > slapd logs show: > slapd[11213]: => bdb_idl_insert_key: c_put id failed: BDB0068 DB_LOCK_DEADLOCK: > Locker killed to resolve a deadlock (-30993) > slapd[11213]: conn=12787 op=25: attribute "entryCSN" index add failure > slapd[11213]: => bdb_idl_insert_key: c_put id failed: BDB0068 DB_LOCK_DEADLOCK: > Locker killed to resolve a deadlock (-30993) > slapd[11213]: conn=13382 op=3: attribute "entryCSN" index add failure This is a normal occurrence in BerkeleyDB and does not indicate an actual error. The bdb/hdb backend code automatically retries when a BDB deadlock is reported. > This issue has occurred sporadically for several months across different > OpenLDAP versions. I managed to capture of a backtrace for two occurrences of > the crash (excerpt below, full backtrace loloaded to FTP). In both instances, a > couple of threads were acquiring locks which is where I suspect the issue lies. > > BT: ftp://ftp.openldap.org/incoming/christian-clinton-140925.zip When talking about BDB deadlock issues you should always obtain the output from db_stat -CA on the db directory, in addition to the full stack trace. You should consider testing with different BDB versions as well, as issues are known to slip into various updates. > Environment: > OS: CentOS 6.4 > OpenLDAP 2.4.36 > 1 Master w/ many syncrepl slaves > > Thread 129 (Thread 0x7f10ddffb700 (LWP 16586)): > #0 0x00000037e560b43c in pthread_cond_wait@@GLIBC_2.3.2 () from > /lib64/libpthread.so.0 > #1 0x00007f11a076e623 in __db_hybrid_mutex_suspend () from > /usr/local/openldap/lib/libdb-5.3.so > #2 0x00007f11a076d6eb in __db_tas_mutex_lock () from > /usr/local/openldap/lib/libdb-5.3.so > #3 0x00007f11a08205e6 in __lock_get_internal () from > /usr/local/openldap/lib/libdb-5.3.so > #4 0x00007f11a08208ab in __lock_get () from > /usr/local/openldap/lib/libdb-5.3.so > #5 0x00007f11a0848468 in __db_lget () from > /usr/local/openldap/lib/libdb-5.3.so > #6 0x00007f11a078dff6 in __bam_search () from > /usr/local/openldap/lib/libdb-5.3.so > #7 0x00007f11a0778ed6 in __bamc_search () from > /usr/local/openldap/lib/libdb-5.3.so > #8 0x00007f11a077c637 in __bamc_get () from > /usr/local/openldap/lib/libdb-5.3.so > #9 0x00007f11a083507d in __dbc_iget () from > /usr/local/openldap/lib/libdb-5.3.so > #10 0x00007f11a0845d00 in __dbc_get_pp () from > /usr/local/openldap/lib/libdb-5.3.so > #11 0x00000000005489ed in hdb_idl_delete_key (be=0x7f10ddff9480, > db=0x7f111a3f9610, tid=0x7f10603015b0, key=0x7f10ddff8ec0, id=250418) at > idl.c:947 > #12 0x000000000054b455 in hdb_key_change (be=0x7f10ddff9480, db=0x7f111a3f9610, > txn=0x7f10603015b0, k=0x7f1060001ab0, id=250418, op=2) at key.c:97 > #13 0x000000000054a4ee in indexer (op=0x7f10603c9f90, txn=0x7f10603015b0, > ad=0x1b6d5e0, atname=0x1b6d4b8, vals=0x7f1060001a88, id=250418, opid=2, mask=4) > at index.c:214 > #14 0x000000000054a978 in index_at_values (op=0x7f10603c9f90, > txn=0x7f10603015b0, ad=0x1b6d5e0, type=0x1b6d450, tags=0x1b6d600, > vals=0x7f1060001a88, id=250418, opid=2) > at index.c:337 > #15 0x000000000054aaf6 in hdb_index_values (op=0x7f10603c9f90, > txn=0x7f10603015b0, desc=0x1b6d5e0, vals=0x7f1060001a88, id=250418, opid=2) at > index.c:386 > #16 0x00000000004dbb44 in hdb_modify_internal (op=0x7f10603c9f90, > tid=0x7f10603015b0, modlist=0x7f10603f9930, e=0x7f10ddff91d0, > text=0x7f10ddffa990, > textbuf=0x7f10ddff9260 "\300\032\070\220\020\177", textlen=256) at > modify.c:358 > #17 0x00000000004dcc09 in hdb_modify (op=0x7f10603c9f90, rs=0x7f10ddffa970) at > modify.c:642 > #18 0x00000000004bbc11 in overlay_op_walk (op=0x7f10603c9f90, rs=0x7f10ddffa970, > which=op_modify, oi=0x1c9a500, on=0x0) at backover.c:671 > #19 0x00000000004bbe28 in over_op_func (op=0x7f10603c9f90, rs=0x7f10ddffa970, > which=op_modify) at backover.c:723 > #20 0x00000000004bbf64 in over_op_modify (op=0x7f10603c9f90, rs=0x7f10ddffa970) > at backover.c:762 > #21 0x000000000044d5c6 in fe_op_modify (op=0x7f10603c9f90, rs=0x7f10ddffa970) at > modify.c:303 > #22 0x000000000044ce98 in do_modify (op=0x7f10603c9f90, rs=0x7f10ddffa970) at > modify.c:177 > #23 0x000000000042d068 in connection_operation (ctx=0x7f10ddffaaa0, > arg_v=0x7f10603c9f90) at connection.c:1155 > #24 0x000000000042d609 in connection_read_thread (ctx=0x7f10ddffaaa0, argv=0xb7) > at connection.c:1291 > #25 0x0000000000596261 in ldap_int_thread_pool_wrapper (xpool=0x1b77350) at > tpool.c:688 > #26 0x00000037e5607851 in start_thread () from /lib64/libpthread.so.0 > #27 0x00000037e52e890d in clone () from /lib64/libc.so.6 > > Thread 71 (Thread 0x7f0fedffb700 (LWP 16648)): > #0 0x00000037e560b43c in pthread_cond_wait@@GLIBC_2.3.2 () from > /lib64/libpthread.so.0 > #1 0x00007f11a076e623 in __db_hybrid_mutex_suspend () from > /usr/local/openldap/lib/libdb-5.3.so > #2 0x00007f11a076d6eb in __db_tas_mutex_lock () from > /usr/local/openldap/lib/libdb-5.3.so > #3 0x00007f11a08205e6 in __lock_get_internal () from > /usr/local/openldap/lib/libdb-5.3.so > #4 0x00007f11a08208ab in __lock_get () from > /usr/local/openldap/lib/libdb-5.3.so > #5 0x00007f11a0848468 in __db_lget () from > /usr/local/openldap/lib/libdb-5.3.so > #6 0x00007f11a078dff6 in __bam_search () from > /usr/local/openldap/lib/libdb-5.3.so > #7 0x00007f11a0778ed6 in __bamc_search () from > /usr/local/openldap/lib/libdb-5.3.so > #8 0x00007f11a077cb1f in __bamc_get () from > /usr/local/openldap/lib/libdb-5.3.so > #9 0x00007f11a083507d in __dbc_iget () from > /usr/local/openldap/lib/libdb-5.3.so > #10 0x00007f11a0845d00 in __dbc_get_pp () from > /usr/local/openldap/lib/libdb-5.3.so > #11 0x000000000053f414 in hdb_dn2id_delete (op=0x7f10883ba740, > txn=0x7f10a82e7430, eip=0x7f10505a82b0, e=0x7f117b58b968) at dn2id.c:646 > #12 0x000000000053d8f0 in hdb_delete (op=0x7f10883ba740, rs=0x7f0fedffa970) at > dele.c.c:406 > #13 0x00000000004bbc11 in overlay_op_walk (op=0x7f10883ba740, rs=0x7f0fedffa970, > which=op_delete, oi=0x1c9a500, on=0x0) at backover.c:671 > #14 0x00000000004bbe28 in over_op_func (op=0x7f10883ba740, rs=0x7f0fedffa970, > which=op_delete) at backover.c:723 > #15 0x00000000004bbfe2 in over_op_delete (op=0x7f10883ba740, rs=0x7f0fedffa970) > at backover.c:780 > #16 0x000000000044ff7c in fe_op_delete (op=0x7f10883ba740, rs=0x7f0fedffa970) at > delete.c:174 > #17 0x000000000044fbef in do_delete (op=0x7f10883ba740, rs=0x7f0fedffa970) at > delete.c:95 > #18 0x000000000042d068 in connection_operation (ctx=0x7f0fedffaaa0, > arg_v=0x7f10883ba740) at connection.c:1155 > #19 0x000000000042d609 in connection_read_thread (ctx=0x7f0fedffaaa0, argv=0x3f) > at connection.cA1A1291 > #20 0x0000000000596261 in ldap_int_thread_pool_wrapper (xpool=0x1b77350) at > tpool.c:688 > #21 0x00000037e5607851 in start_thread () from /lib64/libpthread.so.0 > #22 0x00000037e52e890d in clone () from /lib64/libc.so.6 > > -- -- Howard Chu CTO, 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#7951) slapd deadlocks during mod operation
by quanah＠zimbra.com 25 Sep '14

25 Sep '14

--On Friday, September 26, 2014 1:39 AM +0000 christianclinton(a)gmail.com wrote: > Full_Name: Christian Clinton > Version: 2.4.36 > OS: CentOS 6.4 > URL: ftp://ftp.openldap.org/incoming/christian-clinton-140925.zip > Submission from: (NULL) (216.148.0.72) > > > Description: Slapd hangs during LDAP modification operation. Subsequent > read or write operations hang from all clients until slapd restart. Upgrade to OpenLDAP 2.4.40, use back-mdb with a 64-bit OS, and dump the deprecated and useless back-hdb/bdb. --Quanah -- Quanah Gibson-Mount Server Architect Zimbra, Inc. -------------------- Zimbra :: the leader in open source messaging and collaboration

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