2424726 - Signal 11 in mem__pageallocate_this_engine or mem_pageallocate - SAP ASE

• Running REORG REBUILD or UPDATE STATISICS
• A connection gets terminated
• ASE errorlog reports a signal 11 in the module mem__pageallocate_this_engine or mem_pageallocate together with a stack trace:
  
  Current process (0x1b230120) infected with signal 11 (SIGSEGV)
  Address 0x0x0000000001af7bc0 (mem__pageallocate_this_engine+0x100), siginfo (code, address) = (128, 0x(nil))
  
  Current process (0x1d3d02d0) infected with signal 11 (SIGSEGV)
  Address 0x0x0000000000e3a075 (mem_pageallocate+0xd5), siginfo (code, address) = (1, 0x0x00000000110a140e) 

• The stack trace includes some or all of the following :
  
  mem__pageallocate_this_engine
  mem_pageallocate
  mem_getpages
  memalloc
  memalloc_zero
  lmlink
  startsort
  sort
  ups_build_stat_noindex
  update_statistics_col
  ups__updstats_column
  update_statistics

  Note: A complete stack trace is available under Attachments.

• ASE can crash as a result when the process (spid) is holding spinlock erprocelc_spin:
  
  Spinlocks held by kpid 455278880
  Spinlock eresourcep->erprocelc_spin at address 0x0000000145875d00 owned by 455278880

• SAP Adaptive Server Enterprise (ASE) 15.7 and 16.0
• SAP Adaptive Server Enterprise Cluster Edition (ASE CE) 15.7 and 16.0
• SAP Adaptive Server Enterprise (ASE) 16.0 for Business Suite

SEGV, segmentation, storage, access, violation, fault, segfault, kisignal, stacktrace,  stack, registers, CR805293, CR#805293, 805293 , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BC-DB-SYB , Business Suite on Adaptive Server Enterprise , BC-SYB-ASE-CE , ASE Cluster Edition (Standalone) , Bug Filed