3614197 - Server crash after timeslice at ktMuxThreadMain - SAP ASE

• The ASE errorlog reports (many) timeslices
• They may be in conjunction with (many) page fault messages:
  
  This Adaptive Server process has had 259456 major and 2880834224 minor page faults since boot.
  
  
• Which finally leads to a timeslice at ktMuxThreadMain:
  
  timeslice -1002, current process infected at 0x1f6c6f6 (ktMuxThreadMain+0x1c6) on spid 1234

• Followed by a stack overflow on the same spid at the one hitting the ktMuxThreadMain timeslice
  
  Stack overflow detected: limit: 0x0x00007f4958e36bb0, guardpage: 0x0x00007f4958e3dbb0, sp: 0x0x00007f4528ff75e4
  *** Stack corrupted, server aborting.
  ueshutdown: exiting

• There may be a variety of stack functions or no meaningful stack functions at all reported for the preceding timeslices
• While the ASE is timeslicing, high CPU usage (up to 100%) may be seen

SAP Adaptive Server Enterprise (ASE) 16.0 SP04 & 16.1

ktMuxThreadMain, 830800, CR 830800, pausenonatomic, stack, overflow , ssql_lookup , s_xform_to_execute  , s_normalize , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Known Error