3075572 - Signal 11 in uwpredisconnect() holding spinlock kwt_spinlock - SAP ASE 16.0

• ASE hits Signal 11 in the module uwpredisconnect():
  
  Current process (0x5ceb0126) infected with signal 11 (SIGSEGV)
  Address 0x0x000000000157cb1e (uwpredisconnect+0x55e), siginfo (code, address) = (1, 0x0x000000000000001c)
  
  
• Stack trace includes functions (a full stack example is attached in file Full_stack_example.txt): 
  
       uwpredisconnect
       err_disconnect_allchildren
       err_pll_secondary_processing
       pll_parent_handler
       exec_lava
       s_execute
       sequencer
       execproc
       s_execute
       sequencer
       tdsrecv__dynexec
       tdsrecv_dynamic
  
  
• ASE server goes down because the spid is holding Kernel->kwt->kwt_spinlock: 
  
  Spinlocks held by  kpid 1558905126
  Spinlock Kernel->kwt->kwt_spinlock at address 0x0000000147d79f80 owned by 1558905126 

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

uwpredisconnect, parallel, parallelism, shutdown, CR#825172, CR825172, 825172, SEGV, segmentation, storage, access, violation, fault, segfault, kisignal, stacktrace,  registers , KBA , BW-SYS-DB-SYB , BW on Adaptive Server Enterprise , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem