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3235878 - Many signal 7 (SIGBUS) stacktraces - SAP ASE

Symptom

  • The ASE errorlog suddenly starts reporting many signal 7 (SIGBUS) errors with stack traces
  • The function names in the first stack trace appears to be random
    • This is one example, but a number of different function names in Address line and stack trace can be seen

      Current process (0x46090422) infected with signal 7 (SIGBUS)
      Address 0x0x00000000009a83be (dcomp__ce_decode_col+0x81), siginfo (code, address) = (4, 0x0x00002abf4fc00000)

  • Further stack traces often include getpage_with_validation
  • There may be signal 11 (SIGSEGV) interspersed between the signal 7 ones
  • OS log may report

Nov 24 12:32:49 <HOST> kernel: [754432.493076] Memory failure: 0xe18325e: Killing dataserver:574818 due to hardware memory corruption


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Environment

  • SAP Adaptive Server Enterprise (ASE)
    • The version is not thought to be relevant, but was older and unsupported release level

Product

SAP Adaptive Server Enterprise 16.0

Keywords

memory, corruption , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem

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