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2663557 - Signal 11 at EquivClass::EquivClass with UDF - SAP ASE

Symptom

  • Executing User Defined Function (UDF) terminates
  • With settings that allow parallel processing: 'number of worker processes' and 'max parallel degree' are greater than 1.
  • The stack traces reported depend on platform and configuration settings:
     
    • On Unix, ASE errorlog shows signal 11 in the module EquivClass::EquivClass():

Current process (0x270014) infected with signal 11 (SIGSEGV)
Address 0x0x0000000001ac2d31 (EquivClass::EquivClass(BmLight<VbmGtIdHidden>*, OptBlock*)+0x14591)

    with a stack trace including functions:

EquivClass::EquivClass
EquivClass::eqcCheapestNonBmoSortPop
EquivClass::eqcEagerEnforce
GttTable::GttUsefulIndex

    • On Windows, ASE errorlog shows system exception (0xc0000005) with stack including some or all of:

Pop<ParallelCost,ParallelPropsPopEmit
PopEmit<ParallelCost,ParallelProps>
OptGlobal::_GblAddTopLevel
OptGlobal::GblOptimize

PopBase::getOptBlock
OptGlobal::GblSetOneDegreePtn
OptGlobal::_GblGeneratePllPops
OptGlobal::_GblSearchEngine
OptGlobal::GblOptimize


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Environment

SAP Adaptive Server Enterprise (ASE) 16.0 SP03

Product

SAP Adaptive Server Enterprise 16.0

Keywords

EquivClass, GttTable , 815662 , sigsegv, CR815662, CR#815662, SEGV, segmentation, storage, access, violation, fault, segfault, kisignal, stacktrace, registers , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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