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2111507 - Signal 11 in mda__tc_scan_mempool caused ASE server crash - SAP ASE

Symptom

  • SAP Adaptive Server Enterprise (ASE) server crashed while populating rows in the MDA (Monitoring Database Access) table monTableCompression:
     
  • The ASE errorlog reported an "infected with signal 11" error in the mda__tc_scan_mempool() call with a stacktrace:

Current process (0x2bb015e) infected with signal 11 (SIGSEGV)
Address 0x0x00000000016abf49 (mda__tc_scan_mempool+0x174), siginfo (code, address) = (1, 0x0x0000000000000018) 

  • The process terminated by the ASE server held a spinlock:

Spinlocks held by  kpid 45810014
Spinlock Resource->rpdesmgr_spin at address 0x00002aaaaed005c0 owned by 45810014 

  • The stacktrace included the following modules:

mda__tc_scan_mempool
mda_exec
VTABRemoteAccess::getNext
VTABRemoteAccess::startScan
LeScanOp::_LeOpNext
LeEmitSndOp::_LeOpNext
LePlanNext
exec_lava


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Environment

  • SAP Adaptive Server Enterprise (ASE) 15.7
  • SAP Adaptive Server Enterprise (ASE) 16.0

Product

SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0

Keywords

segmentation, fault, segfault, access, violation, stack, trace, 749058, CR749058, CR#749058, compression, statistics , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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