Mike,
With regard to the stack, it contains a function "cm_grabmem_lru". The problem normally occurs when ASE grabs a dirty buffer for a new pss.
Error 837 followed with stacktrace(cm_grabmem_lru):
This is due to the 'total memory' is configured too high.
After reduce the 'total memory' run the 'update index statistics' which should run without error.
Can You verify this please?
Regards
Kiran K Adharapuram