Symptom:
Kernel panic crashes in ethpm:
sc1-c08-6k1-1# show system reset-reason 
----- reset reason for Supervisor-module 1 (from Supervisor in slot 1) ---
1) At 359759 usecs after Fri Jun  3 14:52:27 2011
    Reason: Kernel Panic
    Service: 
    Version: 7.0(2)N1(1)

sc1-c08-6k1-1# show logging onboard stack-trace
Logging time: Fri Jun  3 14:52:25 2011
1307137945:79999999 process ethpm (3966), jiffies 0x2a17a30
 invalid opcode 

STACK 

 CPU 6 
Process ethpm (3966) 
Stack:
Call Trace: 
 [<801813fc>]page_remove_rmap+0xc6/0xfc

 [<8017a4c3>]unmap_vmas+0x344/0x598 (116)

 [<8017e2bb>]exit_mmap+0x68/0xe4 (40)

 [<80128062>]mmput+0x33/0x86 (12)

 [<8012b7b4>]exit_mm+0xe9/0xf1 (32)

 [<8012cceb>]do_exit+0x1dd/0x745 (68)

 [<8012d2b6>]do_group_exit+0x63/0x8a (20)

 [<801358d1>]get_signal_to_deliver+0x2df/0x2f6 (48)

 [<80102c33>]do_notify_resume+0x70/0x779 (220)

 [<80103b2e>]work_notifysig+0x13/0x25 (-8112)

Conditions:
Unknown