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2084965 - Signal 11 in module proc_decr_pbsharecnt - SAP ASE

Symptom

  • ASE reports signal 11 in module proc_decr_pbsharecnt.
  • With the affected spid holding the rprocmgr_spin spinlock.
  • This causes ASE to crash.
  • The ASE errorlog shows log entries including  (offsets will vary by version and platform) :

Current process (hex#) infected with signal 11 (SIGSEGV)
Address hex# (proc_decr_pbsharecnt+0x99)
Spinlocks held by kpid 123456789

Spinlock Resource->rprocmgr_spin at address .....

  • When using SAP ASE for Business Suite, the stack trace includes modules:

proc_decr_pbsharecnt+0x99()
showCachedPlanInXml+0x97b()
LeRun+0x5857()

  •  When using standalone ASE, a slightly different stack trace can be seen:

proc_decr_pbsharecnt+0x150
showCachedPlanInXml+0x2550
show_cached_plan_in_xml+0xa0


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Environment

  • SAP Adaptive Server Enterprise (ASE) 15.7 SP100 and higher
  • SAP Adaptive Server Enterprise (ASE) 16.0

Product

SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0

Keywords

CR779137, 779137, showCachedPlanInXml, LeRun, show_cached_plan_in_xml , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BC-DB-SYB , SAP Business Suite on Sybase ASE Database Platform , Bug Filed

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