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2839210 - Signal 11 in EquivClass::eqcFindPdTreeLogProps() - SAP ASE

Symptom

  • A user running a query with SELECT DISTINCT, WHERE and ORDER BY is unexpectedly disconnected.
  • The ASE errorlog contains an "infected with signal 11" error in the module EquivClass::eqcFindPdTreeLogProps() with a stack trace:

Current process (0x3c5901d9) infected with signal 11 (SIGSEGV)
Address 0x0x0000000001a97c6a (EquivClass::eqcFindPdTreeLogProps(TreeLogProps*, TreeLogProps*, bool)+0x58a), siginfo (code, address) = (1, 0x0x0000000000000058)

  • The following functions are in the stack trace:

EquivClass::eqcGetPdTreeLogProps
EqcN::eqcGenNlJoinPop
PopReptnIndScan<ParallelCost, ParallelProps>::_popAvailPartCompute
OptBlock::OptDeepPdTransform
OptBlock::OptPostProcess
SearchEngine::SeFindOptimal
OptGlobal::_GblSearchEngine
OptGlobal::GblOptimize
Optimize

  Note: A complete stack trace is available under Attachments.


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Environment

SAP Adaptive Server Enterprise (ASE) 16.0

Product

SAP Adaptive Server Enterprise 16.0

Keywords

CR#820058, CR820058, 820058, merge_join, alternative_greedy_search, 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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