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2771103 - Signal 11 in kbfalloc() and "kbfalloc() retrieved null MEMFRAG from free list..." - SAP ASE 16.0

Symptom

  • The following message is reported in the ASE errorlog:

kbfalloc() retrieved null MEMFRAG from free list at 0x7ffe2f5354050. Heap memory corruption may have occurred. Check diagnostic printout.

  • It is followed by an "infected with signal 11" error in the module sqlexc_intercept_exception() together with a stack trace:

Current process (0x1e700f4) infected with signal 11 (SIGSEGV)
Address 0x0000000080562960 (_$o1cexxB0.kbfalloc+0x150), siginfo (code, address) = (1, 0x0000000000000010)

  • The stack trace includes functions:

ubfallocf
createpool_n_alloc
memallocheap
mon__get_devseg_map
mda_populate_monDeviceSegmentUsage

  Note: A complete stack trace is available under Attachments.


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Environment

SAP Adaptive Server Enterprise (ASE) 16.0 SP03

Product

SAP Adaptive Server Enterprise 16.0

Keywords

CR818347, CR#818347, 818347, 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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