2694998 - Signal 11 at address pipe_read crashing ASE due to dbt_pipemgrspin spinlock - SAP ASE

• ASE errorlog reports a timeslice or signal 11 at address pipe_read/ pipe_write causing either:
• ASE server to crash
• Termination of a single spid/process
   
• Error log will contain any or all of the following errors:
   
• Current process (0x7f503fb) infected with signal 11 (SIGSEGV)
  Address 0x0000000100637860 (pipe_read+0x198)
  
  Spinlock Dbtable->dbt_pipemgrspin at address ....

• Followed by stacktrace including functions:
  pipe_read
  LePipeRWState::_LePrwsReadConstant
  LePipeRWState::LePrwsRWVtuple

• Error: 9566, Severity: 20, State: 1
  Worker Process internal plan copy error for EVAL E_LPAD.
  Consider running this query serially by setting the session parameter 'parallel_degree' to 1.
  Please contact SAP Technical Support.
   
• Thread (spid=1234) initiating parallel primary error processing.
  Followed by (many) stacktraces including function copy__eop_eval_list 
   
• Current process (0x5f0030) infected with signal 11 (SIGSEGV)
  Address 0x000000010210f82c (pipe_write+0x130)
   
• See attachment Stack_Example.txt for un-sanitized errorlog

• SAP Adaptive Server Enterprise (ASE) 16.0 for Business Suite
• SAP Adaptive Server Enterprise (ASE) 16.0

spinlocks, parallel, pipe_read, pipe_write, dbt_pipemgrspin, unptn_pllscan, CR816694, 816694, 820290, CR820290, CR826833 , KBA , BC-DB-SYB , Business Suite on Adaptive Server Enterprise , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed