2655466 - ASE crash after Object Coherency Manager error during ocm_lock:CONVERT and signal 11 in ocm_lock() - SAP ASE

• ASE log reports (many) Object Coherency Manager messages:

Internal Error!! Object Coherency Manager received error from Cluster Lock Manager during ocm_lock:CONVERT

• Followed by a signal 11 in the module ocm_lock() whcich may be seen some time after above messages first started:

Current process (0x11d109bd) infected with signal 11 (SIGSEGV)
Address 0x0x0000000000f4ab83 (ocm_lock+0x733)

• With a stack trace that includes modules:

ocm_lock
ptn_nextcopy
par_get_ptnids
par_get_info

  Note: A complete stack trace is available under Attachments.

• The signal 11 crashes ASE as it is holding the partition (Pdes) spinlock:

Spinlocks held by  kpid 123456789
Spinlock Pdes Spinlocks at address 0x00002aaab0535800 owned by 123456789
End of spinlock display.

SAP Adaptive Server Enterprise Cluster Edition (ASE CE) 15.7

CR815482,  CR#815482,  815482, CONVERT, shutdown, abort, SEGV, segmentation, storage, access, violation, fault, segfault, kisignal, stacktrace,  registers , KBA , BC-SYB-ASE-CE , ASE Cluster Edition (Standalone) , Bug Filed