3075572 - signal 11 in uwpredisconnect holding spinlock kwt_spinlock

• ASE hits a signal 11 at address uwpredisconnect
• Stack trace includes function err_disconnect_allchildren and err_pll_secondary_processing
• Server goes down because the spid is holding Kernel->kwt->kwt_spinlock
  
• Current process (0x5ceb0126) infected with signal 11 (SIGSEGV)

  Address 0x0x000000000157cb1e (uwpredisconnect+0x55e), siginfo (code, address) = (1, 0x0x000000000000001c)

  Spinlocks held by  kpid 1558905126
  Spinlock Kernel->kwt->kwt_spinlock at address 0x0000000147d79f80 owned by 1558905126

• stack trace including  (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

• SAP Adaptive Server Enterprise (ASE) 16.0

infected, signal 11, spinlock, kwt_spinlock, shutdown, uwpredisconnect, err_disconnect_allchildren, err_pll_secondary_processing, CR#825172, CR 825172, 825172 , KBA , BW-SYS-DB-SYB , BW on Adaptive Server Enterprise , Problem