eDirectory 8.8 SP1 abending when running the backlinker.

A NetWare server running eDirectory 8.8.1 is abending several times a week when the backlink process kicks off.
The coredumps stack information seems to change each time. This was due to a double free. In order to see the first (real) cause of the abend this server then had the "alloc memory check flag=on" set. Note: this flag will make abends more likely and therefore should only be used for troubleshooting.

The next coredump showed the following:

P00# r

Exception Processor: 00

Current Focus Processor : 00

EAX = 9994C498 EBX = FC6FB060 ECX = 9994C511 EDX = 9994C510

ESI = 3CC10016 EDI = 905C1220 EBP = 905C1000 ESP = 9994C494

EIP = 0032801C FLAGS = 00000202 (IF)

0032801C 83C404         ADD     ESP, 00000004

P00# sw

Current EIP:0032801C  SERVER.NLM|CheckedFree+6F8

ESP:9994C5BC  EIP:910DECAC  DS.NLM|DMFree+10

ESP:9994C5C8  EIP:911820D6  DS.NLM|CreateBacklink+1AAE

ESP:9994CD2C  EIP:91184DA6  DS.NLM|CleanBacklinks+24C

ESP:9994CD90  EIP:9118952A  DS.NLM|_CheckExtRefs+382

ESP:9994CE0C  EIP:91189781  DS.NLM|_CheckReferencesByPartition+24

ESP:9994CE14  EIP:91189875  DS.NLM|CheckBacklinks+EF

ESP:9994CE44  EIP:911064A9  DS.NLM|BackgroundEvent+22E

ESP:9994CF3C  EIP:0036C252  SERVER.NLM|CallAESRoutineWithEsiSet+A

ESP:9994CF4C  EIP:0026CA32  SERVER.NLM|WTDFrontEndHandler+62

ESP:9994CF5C  EIP:0036C1C2  SERVER.NLM|StartWorkToDo+23

ESP:9994CF74  EIP:0021DF0C  SERVER.NLM|WorkerThread+508

ESP:9994CF8C  EIP:0022AE98  SERVER.NLM|TcoNewSystemThreadEntryPoint+40

(stack end)

This issue has been resolved in eDirectory 8.8 SP2.