DB2 - Problembeschreibung
Problem IC65906 | Status: Geschlossen |
DB2 INSTANCE CRASHED DUE TO DOUBLE FREEING A MEMORY BLOCK IN THE SHARED APPLICATION CONTROL HEAP | |
Produkt: | |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 | |
Problembeschreibung: | |
Due to overflow of an internal field with 16bit size, DB2 might be attempting to double free a memory block during cleanup of dynamic SQL workspace in the shared application control heap. This would cause the instance crash and following memory corruption messages would be reported in the db2diag.log. There might be more than one agent reporting the memory corruption on the same memory block around the same time. 2009-12-07-22.52.51.907977+540 I18915964A1892 LEVEL: Severe PID : 1355976 TID : 5147 PROC : db2sysc 0 INSTANCE: db2inst1 NODE : 000 DB : DB1 APPHDL : 0-25675 APPID: 127.0.0.1.45365.1512140106 AUTHID : db2inst1 EDUID : 5147 EDUNAME: db2agent (DB1) 0 FUNCTION: DB2 UDB, SQO Memory Management, sqloDiagnoseFreeBlockFailure, probe:10 MESSAGE : Possible memory corruption detected. DATA #1 : ZRC, PD_TYPE_ZRC, 4 bytes 0x820F0002 DATA #2 : Corrupt block address, PD_TYPE_CORRUPT_BLK_PTR, 8 bytes 0x0700000026644040 DATA #3 : Block header, PD_TYPE_BLK_HEADER, 24 bytes 0x0700000026644028 : FAB0 7000 0002 6640 4152 9011 027D 482C ..p...f@AR...}H, 0x0700000026644038 : FAB0 7000 0002 6640 ..p...f@ DATA #4 : Data header, PD_TYPE_BLK_DATA_HEAD, 48 bytes 0x0700000026644040 : 0000 0000 0000 0000 0224 0000 0000 0000 .........$...... 0x0700000026644050 : 0700 0000 1001 1CA0 0700 0000 223B B940 ............";.@ 0x0700000026644060 : 0000 0000 0000 0000 0000 3A18 00AC 0000 ..........:..... CALLSTCK: [0] 0x0900000004263D18 pdLog + 0x88 [1] 0x0900000004753A00 @78@sqloDiagnoseFreeBlockFailure__FP8SMemFBlk + 0xE8 [2] 0x090000000475384C sqloDiagnoseFreeBlockFailure__FP8SMemFBlk@glue687 + 0x74 [3] 0x09000000040295D4 sqlofmblkEx + 0x458 [4] 0x090000000471D28C sqlra_sqlW_mem_free_sibling_list__FP8sqlrr_cbP23sqlra_workspace_ siblingPUl + 0x870 [5] 0x09000000047261B0 sqlra_sqlW_mem_freespace__FP8sqlrr_cbUlPUli + 0x420 [6] 0x0900000004725CC4 sqlra_sqlW_mem_freespace__FP8sqlrr_cbUlPUli@glueFF3 + 0x74 [7] 0x0900000005E31704 sqlra_sqlW_check_for_cleanup__FP8sqlrr_cbUlP7OSSTick + 0x60 [8] 0x0900000004724614 sqlra_sqlW_get_dynamic_section__FP8sqlrr_cbP16sqlra_cached_var + 0x1188 [9] 0x09000000067C9E6C sqlra_load_var__FP8sqlrr_cbP16sqlra_cached_var + 0x468 | |
Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * Users executing a dynamic SQL causing cleanup of dynamic * * SQLworkspace in the shared application control heap * * andoverflow of an internal field with 16bit size. * **************************************************************** * PROBLEM DESCRIPTION: * * Due to overflow of an internal field with 16bit size, * * DB2mightbe attempting to double free a memory block during * * cleanupofdynamic SQL workspace in the shared application * * controlheap.This would cause the instance crash and * * following memorycorruption messages would be reported in the * * db2diag.log.Theremight be more than one agent reporting the * * memory corruptiononthe same memory block around the same * * time.2009-12-07-22.52.51.907977+540 I18915964A1892 * * LEVEL:SeverePID : 1355976 TID : 5147 * * PROC :db2sysc0INSTANCE: db2inst1 NODE : 000 * * DB : DB1APPHDL : 0-25675 * * APPID:127.0.0.1.45365.1512140106AUTHID : db2inst1EDUID : * * 5147 EDUNAME: db2agent (DB1) 0FUNCTION: DB2 * * UDB, SQO Memory Management,sqloDiagnoseFreeBlockFailure, * * probe:10MESSAGE : Possible memory corruption detected.DATA * * #1 : ZRC, PD_TYPE_ZRC, 4 bytes0x820F0002DATA #2 : Corrupt * * block address, PD_TYPE_CORRUPT_BLK_PTR, * * 8bytes0x0700000026644040DATA #3 : Block header, * * PD_TYPE_BLK_HEADER, 24 bytes0x0700000026644028 : FAB0 7000 * * 0002 6640 4152 9011 027D * * 482C..p...f@AR...}H,0x0700000026644038 : FAB0 7000 0002 * * 6640..p...f@DATA #4 : Data header, PD_TYPE_BLK_DATA_HEAD, 48 * * bytes0x0700000026644040 : 0000 0000 0000 0000 0224 0000 0000 * * 0000.........$......0x0700000026644050 : 0700 0000 1001 1CA0 * * 0700 0000 223B B940............";.@0x0700000026644060 : 0000 * * 0000 0000 0000 0000 3A18 00AC * * 0000..........:.....CALLSTCK:[0] 0x0900000004263D18 pdLog + * * 0x88[1] * * 0x0900000004753A00@78@sqloDiagnoseFreeBlockFailure__FP8SMemFBl * + 0xE8[2] * * 0x090000000475384CsqloDiagnoseFreeBlockFailure__FP8SMemFBlk@gl * + 0x74[3] 0x09000000040295D4 sqlofmblkEx + 0x458[4] * * 0x090000000471D28Csqlra_sqlW_mem_free_sibling_list__FP8sqlrr_c * 0x870[5] * * 0x09000000047261B0sqlra_sqlW_mem_freespace__FP8sqlrr_cbUlPUli * + 0x420[6] * * 0x0900000004725CC4sqlra_sqlW_mem_freespace__FP8sqlrr_cbUlPUli@ * + 0x74[7] * * 0x0900000005E31704sqlra_sqlW_check_for_cleanup__FP8sqlrr_cbUlP * + 0x60[8] * * 0x0900000004724614sqlra_sqlW_get_dynamic_section__FP8sqlrr_cbP * 0x09000000067C9E6Csqlra_load_var__FP8sqlrr_cbP16sqlra_cached_v * + 0x468 * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 UDB for Linux, Unix, Windows Version 9.7 * * FixPack 2 * **************************************************************** | |
Local-Fix: | |
verfügbare FixPacks: | |
DB2 Version 9.7 Fix Pack 2 for Linux, UNIX, and Windows | |
Lösung | |
Problem was first fixed in Version 9.7 Fix Pack 2 | |
Workaround | |
keiner bekannt / siehe Local-Fix | |
Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 27.01.2010 31.05.2010 31.05.2010 |
Problem behoben ab folgender Versionen (IBM BugInfos) | |
9.7., 9.7.FP2 | |
Problem behoben lt. FixList in der Version | |
9.7.0.2 |