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1972358 - Signal 11 in xml_malloc_heap or bi__xml_query - SAP ASE

Symptom

  • Randomly getting various errors with XML processing.
  • A "Infected with signal 11" error:
     
        Current process (0x48150030) infected with signal 11 (SIGSEGV)
        Address 0x0x00000000014c27d4 (kbfalloc+0x4f4), siginfo (code, address) = (2, 0x0x0000000000e85811)

    with a stacktrace that includes finctions:
     
         kbfalloc
         ubfallocf
         xml_malloc_heap
         XmlMallocHeap
     
  • A timeslice error:
     
         timeslice error: spid 554 exhausted its 'time slice' of 100 milliseconds and additional 'cpu grace time' of 500 ticks (50000 milliseconds).
         It has been marked for termination.

     
    with a stacktrace that insludes functions:
     
         ubfallocf
         bi_xml_xquery_open
         LeXmlTableOp::_LeOpOpen
     
  • Possibly a kernel panic with the message:
     
         ulpspinlock: spinlock order violation
     
    with a stacktrace including the following functions:
     
         ulpspinlock
         kballocn
         ub__alloc
         bi__xml_query
     
  • A spinlock is not released when the impacted spid is terminated by ASE which brings the ASE server down.

Read more...

Environment

  • SAP Adaptive Server Enterprise (ASE) 15.7 prior to SP130
  • SAP Adaptive Server Enterprise (ASE) 16.0 GA prior to PL04

Product

SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0

Keywords

Sybase, CR#755644, CR755644, 755644, SEGV, segmentation, storage, access, violation, fault, segfault, kisignal, stacktrace,  stack, registers, xmlextract, built-in, builtin , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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