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Re: (ITS#7377) Poor libmdb error handling
by hyc＠symas.com 26 Jun '13

26 Jun '13

h.b.furuseth(a)usit.uio.no wrote: > Changes from a failed liblmdb operation can be visible. Sometimes > the resulting DB will also be inconsistent. The operation should > invalidate the affected transaction/cursors or revert the change. The transaction should be invalidated. Nothing more can be done once any error occurs in a transaction. > At least I hope it's feasible to invalidate so the user cannot see > surprising results, instead of just documenting "don't do that". > > Related issues: > > put(MDB_MULTIPLE) can write some of the provided items and then > fail, but be able to keep the txn usable. It should invalidate the > txn anyway, or document that the caller must check for e.g. return > value MDB_PARTIAL_SUCCESS. Maybe invalidate unless the the caller > requests support for partial success. put() would update the input > params to indicate which items remain unwritten. No, "partial success" is not allowed. A transaction is atomic, all or nothing. > A failed txn could still grow the txn size, unless MDB "un-touches" > pages which memcmp says have not changed, rewinds me_pglast and > me_pghead, etc. Which seems a lot of work, likely not worth the > trouble. pghead/pglast should not persist into the environment until a successful commit. Until then any error should just discard them. > > I think cursors need a C_INVALID flag, so future ops cannot give a > surprising success result instead of failing: get(MDB_NEXT/MDB_PREV) > take ~C_INITIALIZED to mean (re)start from the beginning/end. Good idea. > Don't know how often reverting is a relevant option. Rearranging > code can help, but maybe not much. E.g. the mdb_del() in mdb_drop() > can do some harmless touches and then fail cleanly - but mdb_drop() > must invalidate the txn anyway since mdb_drop0() has deleted pages. > Unless it does extra work - remember mt_free_pgs[0] before and after > mdb_drop0(), then delete from mt_free_pgs[] the pages added by > drop0. Or drop0 could be done last since it can fail cleanly just > by resetting mt_free_pgs[0]. But I don't know if del(MDB_MULTIPLE) > can also do that if the DB used a subpage. drop0 can't examine the > subpage after it got deleted. > Reverting is irrelevant. Once a txn is aborted no changes are visible. -- -- 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#7377) Poor libmdb error handling
by h.b.furuseth＠usit.uio.no 26 Jun '13

26 Jun '13

Changes from a failed liblmdb operation can be visible. Sometimes the resulting DB will also be inconsistent. The operation should invalidate the affected transaction/cursors or revert the change. At least I hope it's feasible to invalidate so the user cannot see surprising results, instead of just documenting "don't do that". Related issues: put(MDB_MULTIPLE) can write some of the provided items and then fail, but be able to keep the txn usable. It should invalidate the txn anyway, or document that the caller must check for e.g. return value MDB_PARTIAL_SUCCESS. Maybe invalidate unless the the caller requests support for partial success. put() would update the input params to indicate which items remain unwritten. A failed txn could still grow the txn size, unless MDB "un-touches" pages which memcmp says have not changed, rewinds me_pglast and me_pghead, etc. Which seems a lot of work, likely not worth the trouble. I think cursors need a C_INVALID flag, so future ops cannot give a surprising success result instead of failing: get(MDB_NEXT/MDB_PREV) take ~C_INITIALIZED to mean (re)start from the beginning/end. Don't know how often reverting is a relevant option. Rearranging code can help, but maybe not much. E.g. the mdb_del() in mdb_drop() can do some harmless touches and then fail cleanly - but mdb_drop() must invalidate the txn anyway since mdb_drop0() has deleted pages. Unless it does extra work - remember mt_free_pgs[0] before and after mdb_drop0(), then delete from mt_free_pgs[] the pages added by drop0. Or drop0 could be done last since it can fail cleanly just by resetting mt_free_pgs[0]. But I don't know if del(MDB_MULTIPLE) can also do that if the DB used a subpage. drop0 can't examine the subpage after it got deleted. -- Hallvard

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Re: (ITS#7633) Slapd hangs on hdb write lock
by hyc＠symas.com 26 Jun '13

26 Jun '13

1 0

Re: (ITS#7633) Slapd hangs on hdb write lock
by hyc＠symas.com 26 Jun '13

26 Jun '13

dusan.fric(a)t-systems.sk wrote: > Full_Name: Dusan Fric > Version: 2.4.32 > OS: RHEL 5.7 x64 > URL: ftp://ftp.openldap.org/incoming/ > Submission from: (NULL) (88.212.40.139) > > > We are experiencing frequent hangs in slapd. Once hung we usualy cannot continue > to > connect until we kill -9 the slapd process and restart it. The directory is used > for 2 applications as user eDir and we are using it in production over 1 month - > we have noted the busier the directory becomes the more often it hangs (now > twice per week). > > We have installed identical configurations on 3 environments, each has only one > single server (no replication). There are 30k entries in the directory > (production). > > We are running: > > RHEL 5.7 x64 (VMWare with NFS mountpoints) > OpenLDAP 2.4.32 > Berkeley DB 4.8.30 (4.7.25) > > We were starting with DB 4.8.30, after downgrade to version 4.7.25 (according to > ITS#7378 - https://www.openldap.org/its/index.cgi/Incoming?id=7378;selectid=7378) > we are facing the same issue. > > The problem occurs when two requests simultaneously try to update attributes of > a record and in most cases of the same DN value. > We can easily reproduce it with a java test program running 2 threads each > connecting to the ldap server and updating the record for a particular DN > value. > It need not be the same DN value but DN values which reside on the same BDB > page. Thanks for the traces, but the information you've provided shows that this is a BDB problem, not an OpenLDAP bug. You'll have to contact Oracle for help. The BDB deadlock detector is supposed to handle these situations. For example in your 4.8.30 lock status there are only 2 conflicting transactions 80000028 and 80000029 and they are only contending on a single page. This is one of the most elementary deadlock situations. You might try different settings for the deadlock detector, but ultimately this appears to be a BDB bug and the choice of detector shouldn't matter. > Configuration > > olc cn=config (part): > dn: cn=config > objectClass: olcGlobal > cn: config > olcConcurrency: 0 > olcConnMaxPending: 100 > olcConnMaxPendingAuth: 1000 > olcSockbufMaxIncoming: 262143 > olcSockbufMaxIncomingAuth: 16777215 > olcThreads: 32 > > olc DB hdb config (part): > dn: olcDatabase={1}hdb,cn=config > objectClass: olcHdbConfig > objectClass: olcDatabaseConfig > olcDatabase: {1}hdb > olcDbCacheSize: 80000 > olcDbCheckpoint: 128 5 > olcDbConfig: {0}set_cachesize 0 268435456 1 > olcDbConfig: {1}set_lg_max 10485760 > olcDbConfig: {2}set_lg_bsize 2097152 > olcDbConfig: {3}set_lg_dir /pkg/openldap/dblog > olcDbConfig: {4}set_lg_regionmax 262144 > olcDbConfig: {5}set_lk_detect DB_LOCK_EXPIRE > olcDbConfig: {6}set_flags DB_TXN_NOSYNC > olcDbDirtyRead: FALSE > olcDbDNcacheSize: 0 > olcDbIDLcacheSize: 240000 > olcDbIndex: default eq,sub > olcDbIndex: objectClass eq > olcDbIndex: cn eq,sub > olcDbIndex: uid eq,sub > olcDbIndex: mail pres,eq > olcDbIndex: sn eq,sub > olcDbIndex: member eq > olcDbLinearIndex: FALSE > olcDbMode: 0600 > olcDbNoSync: TRUE > olcDbSearchStack: 20 > olcDbShmKey: 0 > olcLastMod: TRUE > olcMaxDerefDepth: 15 > olcMonitoring: TRUE > olcReadOnly: FALSE > > We have managed to collect db_stat lock information, which indicates the same > issue with DB write locks on both DB versions. > > db_stat -C ol (4.8.30) > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > Lock REGINFO information: > Lock Region type > 5 Region ID > /apps/DECCLASA-1/data/openldap/__db.005 Region name > 0x2ab41cdc3000 Region address > 0x2ab41cdc3138 Region primary address > 0 Region maximum allocation > 0 Region allocated > Region allocations: 3006 allocations, 0 failures, 0 frees, 1 longest > REGION_JOIN_OK Region flags > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > Locks grouped by lockers: > Locker Mode Count Status ----------------- Object --------------- > 1 dd= 0 locks held 1 write locks 0 pid/thread 30034/47555767609232 > 1 READ 1 HELD id2entry.bdb handle 0 > 2 dd= 0 locks held 0 write locks 0 pid/thread 30034/47555767609232 > 3 dd= 0 locks held 1 write locks 0 pid/thread 30034/47555767609232 > 3 READ 1 HELD dn2id.bdb handle 0 > 4 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 > 5 dd= 0 locks held 0 write locks 0 pid/thread 30034/47555767609232 > 6 dd= 0 locks held 0 write locks 0 pid/thread 30034/1139579200 > 7 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 > 8 dd= 0 locks held 0 write locks 0 pid/thread 30034/1131186496 > 9 dd= 0 locks held 1 write locks 0 pid/thread 30034/1122793792 > 9 READ 1 HELD objectClass.bdb handle 0 > a dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 > b dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 > c dd= 0 locks held 1 write locks 0 pid/thread 30034/1122793792 > c READ 1 HELD uid.bdb handle 0 > d dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 > e dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 > f dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 > 10 dd= 0 locks held 1 write locks 0 pid/thread 30034/1147971904 > 10 READ 1 HELD member.bdb handle 0 > 11 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 > 12 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 > 13 dd= 0 locks held 1 write locks 0 pid/thread 30034/1147971904 > 13 READ 1 HELD mail.bdb handle 0 > 14 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 > 15 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 > 16 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 > 17 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 > 18 dd= 0 locks held 1 write locks 0 pid/thread 30034/1147971904 > 18 READ 1 HELD sn.bdb handle 0 > 19 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 > 1a dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 > 1b dd= 0 locks held 1 write locks 0 pid/thread 30034/1147971904 > 1b READ 1 HELD cn.bdb handle 0 > 1c dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 > 1d dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 > 1e dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 > 1f dd= 0 locks held 0 write locks 0 pid/thread 30034/1131186496 > 80000003 dd= 0 locks held 0 write locks 0 pid/thread 30034/47555767609232 > 80000004 dd= 0 locks held 0 write locks 0 pid/thread 30034/1139579200 > 80000005 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 > 80000006 dd= 0 locks held 0 write locks 0 pid/thread 30034/1131186496 > 80000007 dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 > 80000026 dd= 0 locks held 1 write locks 0 pid/thread 30034/1122793792 > 80000026 READ 1 HELD 0x5e948 len: 9 data: 0x560x0500000000000000 > 80000027 dd= 0 locks held 1 write locks 0 pid/thread 30034/1131186496 > 80000027 READ 1 HELD 0x36490 len: 9 data: 0x370000000000000000 > 80000028 dd= 0 locks held 1 write locks 0 pid/thread 30034/1131186496 > 80000028 WRITE 1 WAIT mail.bdb page 3 > 80000028 READ 1 HELD mail.bdb page 3 > 80000029 dd= 0 locks held 1 write locks 0 pid/thread 30034/1122793792 > 80000029 WRITE 1 WAIT mail.bdb page 3 > 80000029 READ 1 HELD mail.bdb page 3 > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > Locks grouped by object: > Locker Mode Count Status ----------------- Object --------------- > 80000027 READ 1 HELD 0x36490 len: 9 data: 0x370000000000000000 > > 1b READ 1 HELD cn.bdb handle 0 > > 10 READ 1 HELD member.bdb handle 0 > > 9 READ 1 HELD objectClass.bdb handle 0 > > c READ 1 HELD uid.bdb handle 0 > > 80000026 READ 1 HELD 0x5e948 len: 9 data: 0x560x0500000000000000 > > 1 READ 1 HELD id2entry.bdb handle 0 > > 18 READ 1 HELD sn.bdb handle 0 > > 3 READ 1 HELD dn2id.bdb handle 0 > > 80000029 READ 1 HELD mail.bdb page 3 > 80000028 READ 1 HELD mail.bdb page 3 > 80000029 WRITE 1 WAIT mail.bdb page 3 > 80000028 WRITE 1 WAIT mail.bdb page 3 > > 13 READ 1 HELD mail.bdb handle 0 > > db_stat -C ol (4.7.25) > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > Lock REGINFO information: > Lock Region type > 5 Region ID > /apps/DECCLASA-1/data/openldap/__db.005 Region name > 0x2b4a8a577000 Original region address > 0x2b4a8a577000 Region address > 0x2b4a8a577138 Region primary address > 0 Region maximum allocation > 0 Region allocated > Region allocations: 3006 allocations, 0 failures, 0 frees, 1 longest > REGION_JOIN_OK Region flags > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > Locks grouped by lockers: > Locker Mode Count Status ----------------- Object --------------- > 1 dd= 0 locks held 1 write locks 0 pid/thread 32447/47463753631632 > 1 READ 1 HELD id2entry.bdb handle 0 > 2 dd= 0 locks held 0 write locks 0 pid/thread 32447/47463753631632 > 3 dd= 0 locks held 1 write locks 0 pid/thread 32447/47463753631632 > 3 READ 1 HELD dn2id.bdb handle 0 > 4 dd= 0 locks held 0 write locks 0 pid/thread 32447/1114126656 > 5 dd= 0 locks held 0 write locks 0 pid/thread 32447/47463753631632 > 6 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 > 7 dd= 0 locks held 1 write locks 0 pid/thread 32447/1097341248 > 7 READ 1 HELD objectClass.bdb handle 0 > 8 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 > 9 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 > a dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 > b dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 > c dd= 0 locks held 1 write locks 0 pid/thread 32447/1097341248 > c READ 1 HELD cn.bdb handle 0 > d dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 > e dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 > f dd= 0 locks held 1 write locks 0 pid/thread 32447/1097341248 > f READ 1 HELD uid.bdb handle 0 > 10 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 > 11 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 > 12 dd= 0 locks held 1 write locks 0 pid/thread 32447/1097341248 > 12 READ 1 HELD member.bdb handle 0 > 13 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 > 14 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 > 15 dd= 0 locks held 1 write locks 0 pid/thread 32447/1105733952 > 15 READ 1 HELD mail.bdb handle 0 > 16 dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 > 17 dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 > 18 dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 > 19 dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 > 1a dd= 0 locks held 1 write locks 0 pid/thread 32447/1105733952 > 1a READ 1 HELD sn.bdb handle 0 > 1b dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 > 1c dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 > 1d dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 > 1e dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 > 1f dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 > 80000003 dd= 0 locks held 0 write locks 0 pid/thread 32447/47463753631632 > 80000004 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 > 80000008 dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 > 80000038 dd= 0 locks held 0 write locks 0 pid/thread 32447/1114126656 > 800000a9 dd= 0 locks held 1 write locks 0 pid/thread 32447/1097341248 > 800000a9 READ 1 HELD 0x2d228 len: 9 data: 0x370000000000000000 > 800000aa dd= 0 locks held 2 write locks 0 pid/thread 32447/1097341248 > 800000aa WRITE 1 WAIT mail.bdb page 3 > 800000aa READ 1 HELD mail.bdb page 1 > 800000aa READ 1 HELD mail.bdb page 3 > 800000ab dd= 0 locks held 1 write locks 0 pid/thread 32447/1105733952 > 800000ab READ 1 HELD 0x43d58 len: 9 data: 0x540x0500000000000000 > 800000ac dd= 0 locks held 2 write locks 0 pid/thread 32447/1105733952 > 800000ac WRITE 1 WAIT mail.bdb page 3 > 800000ac READ 1 HELD mail.bdb page 1 > 800000ac READ 1 HELD mail.bdb page 3 > 800000b1 dd= 0 locks held 0 write locks 0 pid/thread 32447/1122519360 > 800000b2 dd= 0 locks held 0 write locks 0 pid/thread 32447/1130912064 > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > Locks grouped by object: > Locker Mode Count Status ----------------- Object --------------- > 800000a9 READ 1 HELD 0x2d228 len: 9 data: 0x370000000000000000 > > 1 READ 1 HELD id2entry.bdb handle 0 > > 3 READ 1 HELD dn2id.bdb handle 0 > > 7 READ 1 HELD objectClass.bdb handle 0 > > f READ 1 HELD uid.bdb handle 0 > > 1a READ 1 HELD sn.bdb handle 0 > > 800000aa READ 1 HELD mail.bdb page 3 > 800000ac READ 1 HELD mail.bdb page 3 > 800000aa WRITE 1 WAIT mail.bdb page 3 > 800000ac WRITE 1 WAIT mail.bdb page 3 > > c READ 1 HELD cn.bdb handle 0 > > 15 READ 1 HELD mail.bdb handle 0 > > 800000aa READ 1 HELD mail.bdb page 1 > 800000ac READ 1 HELD mail.bdb page 1 > > 12 READ 1 HELD member.bdb handle 0 > > 800000ab READ 1 HELD 0x43d58 len: 9 data: 0x540x0500000000000000 > > > We have also collected the backtrace of threads for both DB versions which I > have uploaded to: > https://dl.dropboxusercontent.com/u/92115703/dusan_gdb_threads_4.8.30_20130… > > https://dl.dropboxusercontent.com/u/92115703/dusan_gdb_threads_4.7.25_20130… > > -- -- 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#7633) Slapd hangs on hdb write lock
by dusan.fric＠t-systems.sk 26 Jun '13

26 Jun '13

Full_Name: Dusan Fric Version: 2.4.32 OS: RHEL 5.7 x64 URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (88.212.40.139) We are experiencing frequent hangs in slapd. Once hung we usualy cannot continue to connect until we kill -9 the slapd process and restart it. The directory is used for 2 applications as user eDir and we are using it in production over 1 month - we have noted the busier the directory becomes the more often it hangs (now twice per week). We have installed identical configurations on 3 environments, each has only one single server (no replication). There are 30k entries in the directory (production). We are running: RHEL 5.7 x64 (VMWare with NFS mountpoints) OpenLDAP 2.4.32 Berkeley DB 4.8.30 (4.7.25) We were starting with DB 4.8.30, after downgrade to version 4.7.25 (according to ITS#7378 - https://www.openldap.org/its/index.cgi/Incoming?id=7378;selectid=7378) we are facing the same issue. The problem occurs when two requests simultaneously try to update attributes of a record and in most cases of the same DN value. We can easily reproduce it with a java test program running 2 threads each connecting to the ldap server and updating the record for a particular DN value. It need not be the same DN value but DN values which reside on the same BDB page. Configuration olc cn=config (part): dn: cn=config objectClass: olcGlobal cn: config olcConcurrency: 0 olcConnMaxPending: 100 olcConnMaxPendingAuth: 1000 olcSockbufMaxIncoming: 262143 olcSockbufMaxIncomingAuth: 16777215 olcThreads: 32 olc DB hdb config (part): dn: olcDatabase={1}hdb,cn=config objectClass: olcHdbConfig objectClass: olcDatabaseConfig olcDatabase: {1}hdb olcDbCacheSize: 80000 olcDbCheckpoint: 128 5 olcDbConfig: {0}set_cachesize 0 268435456 1 olcDbConfig: {1}set_lg_max 10485760 olcDbConfig: {2}set_lg_bsize 2097152 olcDbConfig: {3}set_lg_dir /pkg/openldap/dblog olcDbConfig: {4}set_lg_regionmax 262144 olcDbConfig: {5}set_lk_detect DB_LOCK_EXPIRE olcDbConfig: {6}set_flags DB_TXN_NOSYNC olcDbDirtyRead: FALSE olcDbDNcacheSize: 0 olcDbIDLcacheSize: 240000 olcDbIndex: default eq,sub olcDbIndex: objectClass eq olcDbIndex: cn eq,sub olcDbIndex: uid eq,sub olcDbIndex: mail pres,eq olcDbIndex: sn eq,sub olcDbIndex: member eq olcDbLinearIndex: FALSE olcDbMode: 0600 olcDbNoSync: TRUE olcDbSearchStack: 20 olcDbShmKey: 0 olcLastMod: TRUE olcMaxDerefDepth: 15 olcMonitoring: TRUE olcReadOnly: FALSE We have managed to collect db_stat lock information, which indicates the same issue with DB write locks on both DB versions. db_stat -C ol (4.8.30) =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Lock REGINFO information: Lock Region type 5 Region ID /apps/DECCLASA-1/data/openldap/__db.005 Region name 0x2ab41cdc3000 Region address 0x2ab41cdc3138 Region primary address 0 Region maximum allocation 0 Region allocated Region allocations: 3006 allocations, 0 failures, 0 frees, 1 longest REGION_JOIN_OK Region flags =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Locks grouped by lockers: Locker Mode Count Status ----------------- Object --------------- 1 dd= 0 locks held 1 write locks 0 pid/thread 30034/47555767609232 1 READ 1 HELD id2entry.bdb handle 0 2 dd= 0 locks held 0 write locks 0 pid/thread 30034/47555767609232 3 dd= 0 locks held 1 write locks 0 pid/thread 30034/47555767609232 3 READ 1 HELD dn2id.bdb handle 0 4 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 5 dd= 0 locks held 0 write locks 0 pid/thread 30034/47555767609232 6 dd= 0 locks held 0 write locks 0 pid/thread 30034/1139579200 7 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 8 dd= 0 locks held 0 write locks 0 pid/thread 30034/1131186496 9 dd= 0 locks held 1 write locks 0 pid/thread 30034/1122793792 9 READ 1 HELD objectClass.bdb handle 0 a dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 b dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 c dd= 0 locks held 1 write locks 0 pid/thread 30034/1122793792 c READ 1 HELD uid.bdb handle 0 d dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 e dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 f dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 10 dd= 0 locks held 1 write locks 0 pid/thread 30034/1147971904 10 READ 1 HELD member.bdb handle 0 11 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 12 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 13 dd= 0 locks held 1 write locks 0 pid/thread 30034/1147971904 13 READ 1 HELD mail.bdb handle 0 14 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 15 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 16 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 17 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 18 dd= 0 locks held 1 write locks 0 pid/thread 30034/1147971904 18 READ 1 HELD sn.bdb handle 0 19 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 1a dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 1b dd= 0 locks held 1 write locks 0 pid/thread 30034/1147971904 1b READ 1 HELD cn.bdb handle 0 1c dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 1d dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 1e dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 1f dd= 0 locks held 0 write locks 0 pid/thread 30034/1131186496 80000003 dd= 0 locks held 0 write locks 0 pid/thread 30034/47555767609232 80000004 dd= 0 locks held 0 write locks 0 pid/thread 30034/1139579200 80000005 dd= 0 locks held 0 write locks 0 pid/thread 30034/1147971904 80000006 dd= 0 locks held 0 write locks 0 pid/thread 30034/1131186496 80000007 dd= 0 locks held 0 write locks 0 pid/thread 30034/1122793792 80000026 dd= 0 locks held 1 write locks 0 pid/thread 30034/1122793792 80000026 READ 1 HELD 0x5e948 len: 9 data: 0x560x0500000000000000 80000027 dd= 0 locks held 1 write locks 0 pid/thread 30034/1131186496 80000027 READ 1 HELD 0x36490 len: 9 data: 0x370000000000000000 80000028 dd= 0 locks held 1 write locks 0 pid/thread 30034/1131186496 80000028 WRITE 1 WAIT mail.bdb page 3 80000028 READ 1 HELD mail.bdb page 3 80000029 dd= 0 locks held 1 write locks 0 pid/thread 30034/1122793792 80000029 WRITE 1 WAIT mail.bdb page 3 80000029 READ 1 HELD mail.bdb page 3 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Locks grouped by object: Locker Mode Count Status ----------------- Object --------------- 80000027 READ 1 HELD 0x36490 len: 9 data: 0x370000000000000000 1b READ 1 HELD cn.bdb handle 0 10 READ 1 HELD member.bdb handle 0 9 READ 1 HELD objectClass.bdb handle 0 c READ 1 HELD uid.bdb handle 0 80000026 READ 1 HELD 0x5e948 len: 9 data: 0x560x0500000000000000 1 READ 1 HELD id2entry.bdb handle 0 18 READ 1 HELD sn.bdb handle 0 3 READ 1 HELD dn2id.bdb handle 0 80000029 READ 1 HELD mail.bdb page 3 80000028 READ 1 HELD mail.bdb page 3 80000029 WRITE 1 WAIT mail.bdb page 3 80000028 WRITE 1 WAIT mail.bdb page 3 13 READ 1 HELD mail.bdb handle 0 db_stat -C ol (4.7.25) =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Lock REGINFO information: Lock Region type 5 Region ID /apps/DECCLASA-1/data/openldap/__db.005 Region name 0x2b4a8a577000 Original region address 0x2b4a8a577000 Region address 0x2b4a8a577138 Region primary address 0 Region maximum allocation 0 Region allocated Region allocations: 3006 allocations, 0 failures, 0 frees, 1 longest REGION_JOIN_OK Region flags =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Locks grouped by lockers: Locker Mode Count Status ----------------- Object --------------- 1 dd= 0 locks held 1 write locks 0 pid/thread 32447/47463753631632 1 READ 1 HELD id2entry.bdb handle 0 2 dd= 0 locks held 0 write locks 0 pid/thread 32447/47463753631632 3 dd= 0 locks held 1 write locks 0 pid/thread 32447/47463753631632 3 READ 1 HELD dn2id.bdb handle 0 4 dd= 0 locks held 0 write locks 0 pid/thread 32447/1114126656 5 dd= 0 locks held 0 write locks 0 pid/thread 32447/47463753631632 6 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 7 dd= 0 locks held 1 write locks 0 pid/thread 32447/1097341248 7 READ 1 HELD objectClass.bdb handle 0 8 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 9 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 a dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 b dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 c dd= 0 locks held 1 write locks 0 pid/thread 32447/1097341248 c READ 1 HELD cn.bdb handle 0 d dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 e dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 f dd= 0 locks held 1 write locks 0 pid/thread 32447/1097341248 f READ 1 HELD uid.bdb handle 0 10 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 11 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 12 dd= 0 locks held 1 write locks 0 pid/thread 32447/1097341248 12 READ 1 HELD member.bdb handle 0 13 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 14 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 15 dd= 0 locks held 1 write locks 0 pid/thread 32447/1105733952 15 READ 1 HELD mail.bdb handle 0 16 dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 17 dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 18 dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 19 dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 1a dd= 0 locks held 1 write locks 0 pid/thread 32447/1105733952 1a READ 1 HELD sn.bdb handle 0 1b dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 1c dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 1d dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 1e dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 1f dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 80000003 dd= 0 locks held 0 write locks 0 pid/thread 32447/47463753631632 80000004 dd= 0 locks held 0 write locks 0 pid/thread 32447/1097341248 80000008 dd= 0 locks held 0 write locks 0 pid/thread 32447/1105733952 80000038 dd= 0 locks held 0 write locks 0 pid/thread 32447/1114126656 800000a9 dd= 0 locks held 1 write locks 0 pid/thread 32447/1097341248 800000a9 READ 1 HELD 0x2d228 len: 9 data: 0x370000000000000000 800000aa dd= 0 locks held 2 write locks 0 pid/thread 32447/1097341248 800000aa WRITE 1 WAIT mail.bdb page 3 800000aa READ 1 HELD mail.bdb page 1 800000aa READ 1 HELD mail.bdb page 3 800000ab dd= 0 locks held 1 write locks 0 pid/thread 32447/1105733952 800000ab READ 1 HELD 0x43d58 len: 9 data: 0x540x0500000000000000 800000ac dd= 0 locks held 2 write locks 0 pid/thread 32447/1105733952 800000ac WRITE 1 WAIT mail.bdb page 3 800000ac READ 1 HELD mail.bdb page 1 800000ac READ 1 HELD mail.bdb page 3 800000b1 dd= 0 locks held 0 write locks 0 pid/thread 32447/1122519360 800000b2 dd= 0 locks held 0 write locks 0 pid/thread 32447/1130912064 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Locks grouped by object: Locker Mode Count Status ----------------- Object --------------- 800000a9 READ 1 HELD 0x2d228 len: 9 data: 0x370000000000000000 1 READ 1 HELD id2entry.bdb handle 0 3 READ 1 HELD dn2id.bdb handle 0 7 READ 1 HELD objectClass.bdb handle 0 f READ 1 HELD uid.bdb handle 0 1a READ 1 HELD sn.bdb handle 0 800000aa READ 1 HELD mail.bdb page 3 800000ac READ 1 HELD mail.bdb page 3 800000aa WRITE 1 WAIT mail.bdb page 3 800000ac WRITE 1 WAIT mail.bdb page 3 c READ 1 HELD cn.bdb handle 0 15 READ 1 HELD mail.bdb handle 0 800000aa READ 1 HELD mail.bdb page 1 800000ac READ 1 HELD mail.bdb page 1 12 READ 1 HELD member.bdb handle 0 800000ab READ 1 HELD 0x43d58 len: 9 data: 0x540x0500000000000000 We have also collected the backtrace of threads for both DB versions which I have uploaded to: https://dl.dropboxusercontent.com/u/92115703/dusan_gdb_threads_4.8.30_20130… https://dl.dropboxusercontent.com/u/92115703/dusan_gdb_threads_4.7.25_20130…

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(ITS#7632) ldap_start_tls_s core dumps for 64 bit
by a16474＠gmail.com 25 Jun '13

25 Jun '13

Full_Name: Amit Sinha Version: openldap-2.4.35 OS: Linux 2.6.18-308.11.1.el5 URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (72.163.217.105) When i compile and run the below code on linux 64 bit, it core dumps in ldap_start_tls_s(). #include <ldap.h> #include <iostream> using namespace std; int main() { char* hostname = "myhost.mydomain.com" ; LDAP* l=ldap_init(hostname,389); int version = LDAP_VERSION3 ; if( LDAP_SUCCESS != ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, "7")) { cout << "error LDAP_OPT_DEBUG_LEVEL" << endl ; } if( LDAP_SUCCESS != ldap_set_option(l, LDAP_OPT_PROTOCOL_VERSION, &version )) { cout << "error LDAP_OPT_PROTOCOL_VERSION\n" ; } if( LDAP_SUCCESS != ldap_set_option(l, LDAP_OPT_REFERRALS, LDAP_OPT_OFF)) { cout << "error LDAP_OPT_REFERRALS\n" ; } if( LDAP_SUCCESS != ldap_set_option( NULL,LDAP_OPT_X_TLS_CTX,NULL )) { cout << "error LDAP_OPT_X_TLS_CTX\n" ; } /if( LDAP_SUCCESS != ldap_set_option( NULL,LDAP_OPT_X_TLS_CACERTDIR,"/myDirOfCert")) { cout << "error LDAP_OPT_X_TLS_CACERTDIR\n" ; } int rc ; if( LDAP_SUCCESS != ( rc = ldap_start_tls_s(l, NULL, NULL)) ) { cout << "error ldap_start_tls_s:" << ldap_err2string(rc) << endl ; } } BACKTRACE: (gdb) bt #0 0x00002b7d266bbbff in sk_value () from /root/openssl/openssl-1.0.1e/libcrypto.so.1.0.0 #1 0x00002b7d264a62fe in ssl3_output_cert_chain () from /root/openssl/openssl-1.0.1e/libssl.so.1.0.0 #2 0x00002b7d2649fffd in ssl3_send_client_certificate () from /root/openssl/openssl-1.0.1e/libssl.so.1.0.0 #3 0x00002b7d264a0531 in ssl3_connect () from /root/openssl/openssl-1.0.1e/libssl.so.1.0.0 #4 0x00002b7d264a9487 in ssl23_connect () from /root/openssl/openssl-1.0.1e/libssl.so.1.0.0 #5 0x00002b7d263676ec in tlso_session_connect (ld=<value optimized out>, sess=0x0) at tls_o.c:363 #6 0x00002b7d2636698d in ldap_int_tls_connect (ld=0x3d44e80, conn=0x3d675f0, srv=<value optimized out>) at tls2.c:362 #7 ldap_int_tls_start (ld=0x3d44e80, conn=0x3d675f0, srv=<value optimized out>) at tls2.c:860 #8 0x00002b7d26366d35 in ldap_start_tls_s (ld=0x3d44e80, serverctrls=0x0, clientctrls=<value optimized out>) at tls2.c:1040 #9 0x0000000000400dd2 in main () The open ssl version i am using is openssl-1.0.1e

1 0

Re: (ITS#7631) Overlay to rewrite value of attribute using regex
by bart＠icm.edu.pl 24 Jun '13

24 Jun '13

--=_c864110a076fc513331e0370bcb9adbe Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=UTF-8; format=flowed I put patch here because the ftp server is full. 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1 0

(ITS#7631) Overlay to rewrite value of attribute using regex
by bart＠icm.edu.pl 24 Jun '13

24 Jun '13

Full_Name: Dominik Bartkiewicz Version: OS: Linux URL: Submission from: (NULL) (89.73.105.138) A simple overlay allows override attribute values. In our case, it we replicate users date from three different servers and we wanted to override attributes such as homeDirectory, shell. a sample config: overlay rewatt ra_attribute homeDirectory ra_regex "home/(users|staff|guest)" ra_sub "icm/hydra/home/local" DB

1 0

Re: (ITS#7627) [Patch] Fix segfault in slaptest
by hyc＠symas.com 23 Jun '13

23 Jun '13

jsynacek(a)redhat.com wrote: > Full_Name: Jan Synacek > Version: master > OS: Linux - Fedora 18 > URL: http://jsynacek.fedorapeople.org/openldap/slaptest/0001-Fix-segfault-in-sla… > Submission from: (NULL) (209.132.186.34) > > > Consider the following configuration: > http://jsynacek.fedorapeople.org/openldap/slaptest/slapd-segfault.conf > > When an overlay is specified after the 'database monitor', slaptest segfaults. > I'm not sure whether such configuration makes much sense, however I think that > slaptest shouldn't segfault. > > To reproduce, use the above config and run: > slapd -Tt -f slapd-segfault.conf -F /path/to/a/dir Unable to reproduce any of this. No crash, and no uninit'd memory references in valgrind. I think something is corrupted in your source or build tree. > > Backtrace: > #0 0x0000003385009b70 in pthread_mutex_lock () from /usr/lib64/libpthread.so.0 > #1 0x00007ffff7da524d in ldap_pvt_thread_mutex_lock (mutex=0x25) at > thr_posix.c:296 > #2 0x00000000005574b9 in monitor_cache_get (mi=0x1d, ndn=0x7fffffffde30, > ep=0x7fffffffde28) at cache.c:161 > #3 0x000000000051a10d in monitor_back_unregister_entry_attrs (ndn_in=0x908230, > target_a=0x0, target_cb=0xa70030, > nbase=0x0, scope=0, filter=0x0) at init.c:1520 > #4 0x000000000051a5b0 in monitor_back_unregister_entry_callback (ndn=0x908230, > cb=0xa70030, nbase=0x0, scope=0, > filter=0x0) at init.c:1632 > #5 0x00000000004f6f19 in bdb_monitor_db_close (be=0x907d70) at monitor.c:500 > #6 0x00000000004ef0b4 in bdb_db_close (be=0x907d70, cr=0x0) at init.c:595 > #7 0x0000000000454ad5 in backend_shutdown (be=0x907d70) at backend.c:383 > #8 0x00000000004814a9 in slap_shutdown (be=0x0) at init.c:232 > #9 0x00000000004de90d in slap_tool_destroy () at slapcommon.c:936 > #10 0x00000000004e0435 in slaptest (argc=6, argv=0x7fffffffe228) at > slaptest.c:116 > #11 0x000000000041a9f5 in main (argc=6, argv=0x7fffffffe228) at main.c:665 > > Notice the corrupt 'mi' pointer in frame #2. > > The segfault does not always appear, so here is the corresponding valgrind > output: > ==6751== Memcheck, a memory error detector > ==6751== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al. > ==6751== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info > ==6751== Command: /home/jsynacek/work/2-upstream/openldap-git/servers/slapd/.libs/lt-slapd > -Tt -f slapd-segfault.conf -F ./testconf > ==6751== > 51c1a34e bdb_db_open: database "dc=example,dc=com": unclean shutdown detected; > attempting recovery. > 51c1a34e bdb_db_open: warning - no DB_CONFIG file found in directory > /var/lib/ldap: (2). > Expect poor performance for suffix "dc=example,dc=com". > 51c1a34e bdb_db_open: database "dc=example,dc=com": recovery skipped in > read-only mode. Run manual recovery if errors are encountered. > config file testing succeeded > ==6751== Conditional jump or move depends on uninitialised value(s) > ==6751== at 0x519E9D: monitor_back_unregister_entry_attrs (init.c:1473) > ==6751== by 0x51A5AF: monitor_back_unregister_entry_callback (init.c:1632) > ==6751== by 0x4F6F18: bdb_monitor_db_close (monitor.c:500) > ==6751== by 0x4EF0B3: bdb_db_close (init.c:595) > ==6751== by 0x454AD4: backend_shutdown (backend.c:383) > ==6751== by 0x4814A8: slap_shutdown (init.c:232) > ==6751== by 0x4DE90C: slap_tool_destroy (slapcommon.c:936) > ==6751== by 0x4E0434: slaptest (slaptest.c:116) > ==6751== by 0x41A9F4: main (main.c:665) > ==6751== > ==6751== Conditional jump or move depends on uninitialised value(s) > ==6751== at 0x5573EA: monitor_cache_get (cache.c:150) > ==6751== by 0x51A10C: monitor_back_unregister_entry_attrs (init.c:1520) > ==6751== by 0x51A5AF: monitor_back_unregister_entry_callback (init.c:1632) > ==6751== by 0x4F6F18: bdb_monitor_db_close (monitor.c:500) > ==6751== by 0x4EF0B3: bdb_db_close (init.c:595) > ==6751== by 0x454AD4: backend_shutdown (backend.c:383) > ==6751== by 0x4814A8: slap_shutdown (init.c:232) > ==6751== by 0x4DE90C: slap_tool_destroy (slapcommon.c:936) > ==6751== by 0x4E0434: slaptest (slaptest.c:116) > ==6751== by 0x41A9F4: main (main.c:665) > ==6751== > ==6751== Use of uninitialised value of size 8 > ==6751== at 0x3385009B70: pthread_mutex_lock (in > /usr/lib64/libpthread-2.16.so) > ==6751== by 0x4C2524C: ldap_pvt_thread_mutex_lock (thr_posix.c:296) > ==6751== by 0x5574B8: monitor_cache_get (cache.c:161) > ==6751== by 0x51A10C: monitor_back_unregister_entry_attrs (init.c:1520) > ==6751== by 0x51A5AF: monitor_back_unregister_entry_callback (init.c:1632) > ==6751== by 0x4F6F18: bdb_monitor_db_close (monitor.c:500) > ==6751== by 0x4EF0B3: bdb_db_close (init.c:595) > ==6751== by 0x454AD4: backend_shutdown (backend.c:383) > ==6751== by 0x4814A8: slap_shutdown (init.c:232) > ==6751== by 0x4DE90C: slap_tool_destroy (slapcommon.c:936) > ==6751== by 0x4E0434: slaptest (slaptest.c:116) > ==6751== by 0x41A9F4: main (main.c:665) > ==6751== > ==6751== Invalid read of size 4 > ==6751== at 0x3385009B70: pthread_mutex_lock (in > /usr/lib64/libpthread-2.16.so) > ==6751== by 0x4C2524C: ldap_pvt_thread_mutex_lock (thr_posix.c:296) > ==6751== by 0x5574B8: monitor_cache_get (cache.c:161) > ==6751== by 0x51A10C: monitor_back_unregister_entry_attrs (init.c:1520) > ==6751== by 0x51A5AF: monitor_back_unregister_entry_callback (init.c:1632) > ==6751== by 0x4F6F18: bdb_monitor_db_close (monitor.c:500) > ==6751== by 0x4EF0B3: bdb_db_close (init.c:595) > ==6751== by 0x454AD4: backend_shutdown (backend.c:383) > ==6751== by 0x4814A8: slap_shutdown (init.c:232) > ==6751== by 0x4DE90C: slap_tool_destroy (slapcommon.c:936) > ==6751== by 0x4E0434: slaptest (slaptest.c:116) > ==6751== by 0x41A9F4: main (main.c:665) > ==6751== Address 0x37 is not stack'd, malloc'd or (recently) free'd > ==6751== > ==6751== > ==6751== Process terminating with default action of signal 11 (SIGSEGV) > ==6751== Access not within mapped region at address 0x37 > ==6751== at 0x3385009B70: pthread_mutex_lock (in > /usr/lib64/libpthread-2.16.so) > ==6751== by 0x4C2524C: ldap_pvt_thread_mutex_lock (thr_posix.c:296) > ==6751== by 0x5574B8: monitor_cache_get (cache.c:161) > ==6751== by 0x51A10C: monitor_back_unregister_entry_attrs (init.c:1520) > ==6751== by 0x51A5AF: monitor_back_unregister_entry_callback (init.c:1632) > ==6751== by 0x4F6F18: bdb_monitor_db_close (monitor.c:500) > ==6751== by 0x4EF0B3: bdb_db_close (init.c:595) > ==6751== by 0x454AD4: backend_shutdown (backend.c:383) > ==6751== by 0x4814A8: slap_shutdown (init.c:232) > ==6751== by 0x4DE90C: slap_tool_destroy (slapcommon.c:936) > ==6751== by 0x4E0434: slaptest (slaptest.c:116) > ==6751== by 0x41A9F4: main (main.c:665) > ==6751== If you believe this happened as a result of a stack > ==6751== overflow in your program's main thread (unlikely but > ==6751== possible), you can try to increase the size of the > ==6751== main thread stack using the --main-stacksize= flag. > ==6751== The main thread stack size used in this run was 8388608. > ==6751== > ==6751== HEAP SUMMARY: > ==6751== in use at exit: 1,784,260 bytes in 10,532 blocks > ==6751== total heap usage: 20,806 allocs, 10,274 frees, 4,333,045 bytes > allocated > ==6751== > ==6751== LEAK SUMMARY: > ==6751== definitely lost: 16 bytes in 1 blocks > ==6751== indirectly lost: 0 bytes in 0 blocks > ==6751== possibly lost: 0 bytes in 0 blocks > ==6751== still reachable: 1,784,244 bytes in 10,531 blocks > ==6751== suppressed: 0 bytes in 0 blocks > ==6751== Rerun with --leak-check=full to see details of leaked memory > ==6751== > ==6751== For counts of detected and suppressed errors, rerun with: -v > ==6751== Use --track-origins=yes to see where uninitialised values come from > ==6751== ERROR SUMMARY: 11 errors from 9 contexts (suppressed: 2 from 2) > > I'm not sure if my patch is correct. I feel it's more like a workaround, so feel > free to modify it if that's the case. > > -- -- 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#7628) back-mdb bug with test064-constraint
by hyc＠symas.com 23 Jun '13

23 Jun '13

h.b.furuseth(a)usit.uio.no wrote: > Full_Name: Hallvard B Furuseth > Version: master, 7c6b599de6d7c0e10aa8bf6920ca07d94605e8c2 > OS: Linux amd64 > URL: > Submission from: (NULL) (129.240.203.186) > Submitted by: hallvard > > > id2entry.c:mdb_opinfo_get() renews a txn which is in use. It gets > EINVAL, which it does not catch. Caught by this patch and test064: Fixed now in master. I've left this assert in place as well, it obviously Should Never Happen. > > index 84de09d..a247974 100644 > --- a/servers/slapd/back-mdb/id2entry.c > +++ b/servers/slapd/back-mdb/id2entry.c > @@ -507,3 +507,4 @@ mdb_opinfo_get( Operation *op, struct mdb_info *mdb, int > rdonly, mdb_op_info **m > if ( renew ) { > - mdb_txn_renew( moi->moi_txn ); > + rc = mdb_txn_renew( moi->moi_txn ); > + assert(rc == MDB_SUCCESS); > } > > Core file in ada:/home/hallvard/openldap.g/tests/core. > > > > #2 0x00007ff6a1609301 in *__GI___assert_fail (assertion=0x601014 "rc == 0", > file=<value optimized out>, line=509, > function=0x601141 "mdb_opinfo_get") at assert.c:81 > #3 0x0000000000515db1 in mdb_opinfo_get (op=0x7ff69e411130, mdb=0x7ff6a2a02010, > rdonly=1, moip=0x7ff69e280d08) > at id2entry.c:509 > #4 0x00000000004f2bed in mdb_search (op=0x7ff69e411130, rs=0x7ff69e4112a0) at > search.c:343 > #5 0x00000000004c4f08 in overlay_op_walk (op=0x7ff69e411130, rs=0x7ff69e4112a0, > which=op_search, oi=0x15b30e0, on=0x0) > at backover.c:691 > #6 0x00000000004c511f in over_op_func (op=0x7ff69e411130, rs=0x7ff69e4112a0, > which=op_search) at backover.c:743 > #7 0x00000000004c5207 in over_op_search (op=0x7ff69e411130, rs=0x7ff69e4112a0) > at backover.c:770 > #8 0x000000000052a197 in constraint_violation (c=0x15dc620, bv=0x1af6f90, > op=0x17c8cf0) at constraint.c:666 > #9 0x000000000052a82a in constraint_add (op=0x17c8cf0, rs=0x7ff69e411a60) at > constraint.c:812 > #10 0x00000000004c4e69 in overlay_op_walk (op=0x17c8cf0, rs=0x7ff69e411a60, > which=op_add, oi=0x15b30e0, on=0x15b32c0) > at backover.c:681 > #11 0x00000000004c511f in over_op_func (op=0x17c8cf0, rs=0x7ff69e411a60, > which=op_add) at backover.c:743 > #12 0x00000000004c52af in over_op_add (op=0x17c8cf0, rs=0x7ff69e411a60) at > backover.c:794 > #13 0x000000000043aa44 in fe_op_add (op=0x17c8cf0, rs=0x7ff69e411a60) at > add.c:334 > #14 0x000000000043a341 in do_add (op=0x17c8cf0, rs=0x7ff69e411a60) at add.c:194 > #15 0x0000000000430da3 in connection_operation (ctx=0x7ff69e411b90, > arg_v=0x17c8cf0) at connection.c:1155 > #16 0x0000000000431344 in connection_read_thread (ctx=0x7ff69e411b90, argv=0xb) > at connection.c:1291 > #17 0x00000000005953c5 in ldap_int_thread_pool_wrapper (xpool=0x1543920) at > tpool.c:688 > > > (gdb) frame 3 > #3 0x0000000000515db1 in mdb_opinfo_get (op=0x7ff69e411130, mdb=0x7ff6a2a02010, > rdonly=1, moip=0x7ff69e280d08) > at id2entry.c:509 > 509 assert(rc == MDB_SUCCESS); > (gdb) info locals > rc = 22 > renew = 1 > data = 0x1af36b0 > ctx = 0x7ff69e411b90 > moi = 0x7ff69e280d10 > oex = 0x0 > __PRETTY_FUNCTION__ = "mdb_opinfo_get" > (gdb) p *moi > $1 = {moi_oe = {oe_next = {sle_next = 0x7ff69e411850}, oe_key = 0x7ff6a2a02010}, > moi_txn = 0x1af36b0, moi_ref = 0, > moi_flag = 1 '\001'} > (gdb) p *moi->moi_txn > $2 = {mt_parent = 0x0, mt_child = 0x0, mt_next_pgno = 31, mt_txnid = 51, mt_env > = 0x17c0920, mt_free_pgs = 0x0, > mt_u = {dirty_list = 0x7ff6a2bd5080, reader = 0x7ff6a2bd5080}, mt_dbxs = > 0x17baa80, mt_dbs = 0x1af3718, > mt_cursors = 0x0, mt_dbflags = 0x1af4f78 "\b\b\n\b\b\b\n\n\n\n\n", mt_numdbs = > 11, mt_flags = 1, mt_dirty_room = 0, > mt_toggle = 1} > > The EINVAL was returned because mt_dbxs != NULL. > > -- -- 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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