2148437 - Signal 10 (SIGBUS) at module ubofree - SAP ASE for BS

• User session terminates unexpectedly.
• ASE shuts down unexpectedly.
• A running sp_sysmon is in progress.  
• ASE errorlog contains a message 'infected with signal 10' at the module ubofree():

Current process (hex#) infected with signal 10 (SIGBUS)
Address hex# (ubofree+0x220)

• This messages can be seen in the errorlog:
  
     ulreleasespinlock: spinlock being freed improperly
               
• With a stacktrace containing the following functions:

ubofree
keipanic
ulreleasespinlock
ksfreesocket
soc_nclose
drop_connection
            
OR
                    
ubofree
ups_disable_hashstats_parallelism
cri_ptn_index
cri_physbuild

• A terminated user process left a phantom spinlock behind:

Spinlock Kernel Spinlock Spinlock at address hex# owned by 123456789

• SAP Adaptive Server Enterprise (ASE) 16.0 for Business Suite
• SAP Adaptive Server Enterprise (ASE) 15.7 for Business Suite
• SAP NetWeaver (NW) - All versions

disconnect, network, connection, "bus error",  memory, CR767385, CR#767385, 767385, kisignal, stack, trace, registers, CR767385, CR#767385, 767385 , KBA , BC-DB-SYB , Business Suite on Adaptive Server Enterprise , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BW-SYS-DB-SYB , BW on Adaptive Server Enterprise , Bug Filed