JVM crashed running IdM when zone was configured with "dedicated-cpu: ncpus: 1-2"

Customer reported the following behavior:

On Solaris 10 x86 U 6 (Solaris 10 8/07 w/ 137112-07) intermittent JVM crashes
are observed, running Sun IdM, when the zone is configured like follows:

zonecfg: dedicated-cpu:
                          ncpus: 1-2

The issues are no longer reproducible on the same box, when the zone is
configured like follows:

zonecfg: rctl:
                     name: zone.cpu-shares
                     value: (priv=privileged,limit=25,action=none)

The relationship between failure and configuration of the zone was
verified on two separate boxes several times.