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2545441 - Signal 11 (SIGSEGV) in dbt_unkeep() - SAP ASE


  • A client connection is unexpectedly terminated.
  • ASE errorlog contains an "infected with signal 11" error in dbt_unkeep() with a stack trace:

Current process (0x5d002f) infected with signal 11 (SIGSEGV)
Address 0x0x0000000001aa88ba (dbt_unkeep+0x2ba), siginfo (code, address) = (1, 0x0x000000000000000f)

  • The stack trace includes the following functions:


  Note: A complete stack trace is available under Attachments

  • ASE server shutdown because the terminated process (spid) didn't release the rdbt_spin spinlock:

Spinlocks held by kpid 6094895 
Spinlock Resource->rdbt_spin at address 0x00002aaaafed0b80 owned by 6094895



  • SAP Adaptive Server Enterprise (ASE) 15.7 and 16.0
  • SAP Adaptive Server Enterprise Cluster Edition (ASE CE) 15.7 and 16.0


SAP Adaptive Server Enterprise 16.0 ; SAP Adaptive Server Enterprise 16.0 Cluster Edition


Sybase, SEGV, segment, violation, storage, access, kisignal, CR809179, CR#809179, 809179, worktable , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BC-SYB-ASE-CE , ASE Cluster Edition (Standalone) , Bug Filed

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