System panic'd with error 'unable to handle kernel NULL pointer dereference at 0000000000000018'

Issue

• System panic withing the emcp module with error unable to handle kernel NULL pointer dereference at 0000000000000018
• Panic message on Red Hat Enterprise Linux 6

BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
IP: [<ffffffffa025c349>] PowerTopDispatch+0x89/0x360 [emcp]
PGD 86aa9c067 PUD 86aa9d067 PMD 0 
Oops: 0002 [#1] SMP 
last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/0000:11:00.0/host0/rport-0:0-5/target0:0:3/0:0:3:0/model
CPU 8 
[...]

• Panic message on Red Hat Enterprise Linux 5

Unable to handle kernel NULL pointer dereference at 0000000000000018 RIP: 
 [<ffffffff88447f7c>] :emcp:PowerTopDispatch+0x17c/0x360
PGD 829856067 PUD 829857067 PMD 0 
Oops: 0002 [1] SMP 
...