pstack on a core file transported from a system with a different JDK, yet which exists in the same directory, can crash.
pstack of that crash may look like:

core '/home/kwalls/tmp/core.pstack.10086' of 10086: pstack core.10076
 ffffffff7ed71ff8 _free_unlocked (fee47384, ffffffff7ef66470, 10470, 10400, ffffffff7ef56000, 0) + 54
 ffffffff7ed71f8c free (fee47384, 5400, 5440, ffffffff7ef56000, 1e409c, 5400) + 2c
 ffffffff7c9021e0 parse_vmstructs (1001816a0, ffffffff7c906810, 1001816c0, 5, 1f40c0, ffffffff7ffff2a8) + 2c0
 ffffffff7c902bf0 Jagent_create (100105500, 1, 100104000, ffffffff7f73acc8, 0, 1001816a0) + 230
 0000000100002e0c load_libjvm (100000, ffffffff7c9029c0, 100104000, 100104, 100000, 100104) + 124
 0000000100001df8 main (1, ffffffff7ffff710, ffffffff7ffff71c, a1, 0, 0) + 384
 0000000100001a5c _start (0, 0, 0, 0, 0, 0) + 17c