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2686301 - ASE crashes due Signal 11 in ubffreef() while holding RAMEM_SPIN spinlock -SAP ASE


  • ASE unexpectedly shuts down.
  • Replication Agent is configured for stream replication in an IMRS enabled database.
  • Error 9414 may be reported in the ASE errorlog, for example:

Error: 9414, Severity: 20, State: 1
RepAgent(5): Streaming replication stream CI Library error -1 with severity 2 and message 'Producer receiver 'ERP_1' failed to receive data, shutting down transport to 'ocs:myhostname:portnumber'.'. Rep Agent detected error 3 with message 'Unknown' at line 0 in file nofilename.

  • ASE errorlog contains an "infected with signal 11" error in the module ubffreef() with a stack trace:

Current process (0x479023d) infected with signal 11 (SIGSEGV)                                         
Address 0x0x00000000021524bd (ubffreef+0x10d), siginfo (code, address) = (1, 0x0x000000000000001c)

  • The stack trace includes the following functions:


  Note: A complete stack trace is available under Attachments.

  • There is also a message about a spinlock RAMEM_SPIN held by a process (spid) infected by signal 11:

Spinlocks held by  kpid 75039293                                    
Spinlock RAMEM_SPIN at address 0x00000001459edf80 owned by 75039293 



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


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


Sybase, infected, signal, SEGV, SIGSEGV, segment, violation, storage, access, kisignal, CR815821, CR#815821, 815821 , 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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