|
Problem IT08289
|
Status: Closed |
PRIVATE MEMORY LEAK DUE TO NATIVE ENCRYPTION. |
| product: |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 |
| Problem description: |
The memory consumption on db2sysc process keeps growing only
when native encryption is enabled.
For example, the private segments (Esid 10,11,12.. in svmon)
keep growing in AIX systems, and [anon] blocks in pmap keep
increasing in Linux systems.
However, the DB2 memory statistics shows no leak sign in the
PRIVATE set, db2pd -dbptnmem and db2pd -memblock shows stable
memory stats on private memory usage.
The malloc debug in AIX shows one of major leak is observed in
the following code path.
0x090000000004a428 malloc_common_debugging
0x090000001a0d6d0c default_malloc_ex
0x090000001a0d7e9c C101_CRYPTO_malloc@AF28_12
0x090000001a07bf94 efCRYPTO_malloc
0x090000001a083b7c efCRYPTO_calloc
0x0900000019f99098 ICCC_EVP_CIPHER_CTX_new@AF299_235
0x0900000019f96e08 ICCC_EVP_CIPHER_CTX_new
0x0900000019f8d2b4 ICC_EVP_CIPHER_CTX_new
0x0900000002b62300 cryptSetupEncryptCipherCtx
0x090000000204fcc8
sqlexRedeemCipherTicket__FP17sqlexCipherTicketPUcUlP5sqlca
0x0900000002339720
sqlpEncrypt__FCPCvCUlPvT2P17sqlexCipherTicketPUcPib
0x0900000003b64bb8
sqlpgEncryptUserDataInNLogPages__FCPvPvCUsP17sqlexCipherTicketC
0x0900000005ab5b80
sqlpgWriteNLogPagesInternal__FR12SQLO_FHANDLECPvPvClCUlCPUlCUsP
0x0900000005a6c388
sqlpgWriteNLogPagesInternal__FR12SQLO_FHANDLECPvPvClCUlCPUlCUsP
0x0900000005a6c184
sqlpgWriteNLogPages__FR12SQLO_FHANDLECPvPvCUlClT4CPUlCUsP17sqle
0x0900000005a6bb24
sqlpgWriteToDisk__FP9SQLP_DBCBP9SQLP_LFPBUlbT4T3
0x0900000005a6b6d8 sqlpgPingPong__FP9SQLP_DBCBP9SQLP_LFPBUlbT3
0x0900000005a6b148 sqlpgwlp__FP9SQLP_DBCBUlT2PC9SQLP_LSN8T2
0x0900000005a63534 sqlpLoggwMain__11sqpLoggwEduFv |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Users who use native encryption functionality. *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Please upgrade to DB2 V10.5 fixPack 6 or later. *
**************************************************************** |
| Local Fix: |
Please turn off native encryption. |
| Solution |
This problem was first fixed in DB2 V10.5 FixPack 6. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 14.04.2015
08.10.2015
08.10.2015 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 10.5.0.6
|
 |
