Symptom
- ASE has trace flag (TF) 132 enabled to remove duplicates from the IN list for a query.
- The following errors and stack reported in ASE errorlog:
memfreeheap: possible memory corruption: addrp: 0x0x2dfff653c100 addrp size: -1999436288 bytes guard pointer: 0x0x2dff7f26c6d6
memfreeheap
dup_elem_memfree
yyparse
sqlpars
- The above could repeat thousands of times with different addresses.
- This is followed by a timeslice error in the module addr_to_name() with the stack trace showing the same functions:
timeslice -1001, current process infected at 0x1327466 (addr_to_name+0x36)
(null)
pcdescformat
pcdescprint
pcstkwalk
ucstkgentrace
ucbacktrace
memfreeheap
dup_elem_memfree
yyparse
psqlpars
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Environment
- Adaptive Server Enterprise 16.0 SP03 PL07
- Adaptive Server Enterprise 16.0 SP04
Product
SAP Adaptive Server Enterprise 16.0
Keywords
CR826332, CR#826332, 826332, CR760658, CR#760658, 760658, clause, IN-clause, list, IN-list , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem
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