Retina 5K iMac Kernel Panic

Getting a Kernel Panic on a refurb 5K iMac I just bought from the apple online store. I did add 3rd party RAM, but the KP has happened with and without it.

Genius bar accidentally cleared my PRAM so couldn't look at the logs, I took it home and of course got a KP a few hours later.

Here's the KP:

Anonymous UUID: 99D8FFDE-A2BA-2694-1BB2-3C86158FD2CC

Wed May 27 20:22:54 2015

*** Panic Report ***

panic(cpu 1 caller 0xffffff80127fd59e): "Possible memory corruption: pmap_pv_remove(0xffffff804958ec30,0x866e000,0x100000, 0x100000000, 0xffffff82dbc6bb68): empty hash"@/SourceCache/xnu/xnu-2782.20.48/osfmk/i386/pmap_internal.h:822

Backtrace (CPU 1), Frame : Return Address

0xffffff82dbc6b9b0 : 0xffffff801272bda1

0xffffff82dbc6ba30 : 0xffffff80127fd59e

0xffffff82dbc6bba0 : 0xffffff80127983f5

0xffffff82dbc6bd10 : 0xffffff801279a24f

0xffffff82dbc6bf20 : 0xffffff8012818224

0xffffff82dbc6bfb0 : 0xffffff8012834a85

BSD process name corresponding to current thread: Adobe CEF Helper

Mac OS version:

14D136

Kernel version:

Darwin Kernel Version 14.3.0: Mon Mar 23 11:59:05 PDT 2015; root:xnu-2782.20.48~5/RELEASE_X86_64

Kernel UUID: 4B3A11F4-77AA-3D27-A22D-81A1BC5B504D

Kernel slide: 0x0000000012400000

Kernel text base: 0xffffff8012600000

__HIB text base: 0xffffff8012500000

System model name: iMac15,1 (Mac-42FD25EABCABB274)

System uptime in nanoseconds: 2134198722723

last loaded kext at 12121800902: com.apple.driver.AppleBluetoothMultitouch 85.3 (addr 0xffffff7f94c41000, size 61440)

last unloaded kext at 168865198630: com.apple.iokit.IOAHCIPassThrough 1.0.3 (addr 0xffffff7f93a7c000, size 36864)

loaded kexts:

com.apple.driver.AppleBluetoothMultitouch 85.3

com.apple.driver.AudioAUUC 1.70

com.apple.filesystems.autofs 3.0

com.apple.driver.X86PlatformShim 1.0.0

com.apple.driver.AGPM 110.19.5

com.apple.driver.ApplePlatformEnabler 2.2.0d4

com.apple.iokit.IOBluetoothSerialManager 4.3.4f4

com.apple.driver.AppleOSXWatchdog 1

com.apple.driver.AppleMikeyHIDDriver 124

com.apple.driver.AppleMikeyDriver 272.18

com.apple.driver.AppleHDA 272.18

com.apple.driver.AppleGraphicsDevicePolicy 3.7.7

com.apple.driver.AppleUpstreamUserClient 3.6.1

com.apple.kext.AMDFramebuffer 1.3.2

com.apple.AMDRadeonX4000 1.3.2

com.apple.iokit.IOUserEthernet 1.0.1

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AppleHWAccess 1

com.apple.driver.AppleIntelHD5000Graphics 10.0.6

com.apple.driver.AppleMCCSControl 1.2.11

com.apple.kext.AMD7000Controller 1.3.2

com.apple.driver.AppleHV 1

com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0

com.apple.driver.AppleIntelFramebufferAzul 10.0.6

com.apple.driver.AppleLPC 1.7.3

com.apple.driver.AppleThunderboltIP 2.0.2

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.4f4

com.apple.driver.AppleSMCLMU 2.0.7d0

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.BootCache 36

com.apple.driver.AppleUSBHub 705.4.2

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.7.1

com.apple.driver.AppleSDXC 1.6.5

com.apple.iokit.AppleBCM5701Ethernet 10.1.3

com.apple.driver.AppleUSBXHCI 710.4.11

com.apple.driver.AirPort.Brcm4360 930.37.3

com.apple.driver.AppleAHCIPort 3.1.2

com.apple.driver.AppleRTC 2.0

com.apple.driver.AppleACPIButtons 3.1

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleSMBIOS 2.1

com.apple.driver.AppleACPIEC 3.1

com.apple.driver.AppleAPIC 1.7

com.apple.nke.applicationfirewall 161

com.apple.security.quarantine 3

com.apple.security.TMSafetyNet 8

com.apple.driver.IOBluetoothHIDDriver 4.3.4f4

com.apple.driver.AppleMultitouchDriver 263.9.1

com.apple.kext.triggers 1.0

com.apple.iokit.IOSerialFamily 11

com.apple.driver.DspFuncLib 272.18

com.apple.kext.OSvKernDSPLib 1.15

com.apple.driver.AppleGraphicsControl 3.10.22

com.apple.iokit.IOSurface 97.4

com.apple.kext.AMDSupport 1.3.2

com.apple.driver.AppleSMBusController 1.0.13d1

com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0

com.apple.iokit.IONDRVSupport 2.4.1

com.apple.AppleGraphicsDeviceControl 3.10.22

com.apple.iokit.IOAcceleratorFamily2 156.14

com.apple.driver.X86PlatformPlugin 1.0.0

com.apple.driver.IOPlatformPluginFamily 5.9.1d7

com.apple.driver.AppleSMBusPCI 1.0.12d1

com.apple.driver.AppleHDAController 272.18

com.apple.iokit.IOHDAFamily 272.18

com.apple.iokit.IOAudioFamily 203.3

com.apple.vecLib.kext 1.2.0

com.apple.driver.AppleThunderboltEDMSink 4.0.2

com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.4f4

com.apple.iokit.IOBluetoothFamily 4.3.4f4

com.apple.iokit.IOUSBUserClient 705.4.0

com.apple.driver.AppleSMC 3.1.9

com.apple.iokit.IOGraphicsFamily 2.4.1

com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.5

com.apple.driver.AppleUSBHIDKeyboard 176.2

com.apple.driver.AppleHIDKeyboard 176.2

com.apple.iokit.IOUSBHIDDriver 705.4.0

com.apple.driver.AppleUSBMergeNub 705.4.0

com.apple.driver.AppleUSBComposite 705.4.9

com.apple.driver.CoreStorage 471.20.7

com.apple.driver.AppleThunderboltDPInAdapter 4.0.6

com.apple.driver.AppleThunderboltDPOutAdapter 4.0.6

com.apple.driver.AppleThunderboltDPAdapterFamily 4.0.6

com.apple.driver.AppleThunderboltPCIDownAdapter 2.0.2

com.apple.driver.AppleThunderboltNHI 3.1.7

com.apple.iokit.IOThunderboltFamily 4.2.2

com.apple.iokit.IOEthernetAVBController 1.0.3b3

com.apple.iokit.IOUSBFamily 720.4.4

com.apple.iokit.IO80211Family 730.60

com.apple.driver.mDNSOffloadUserClient 1.0.1b8

com.apple.iokit.IONetworkingFamily 3.2

com.apple.iokit.IOAHCIFamily 2.7.5

com.apple.driver.AppleEFINVRAM 2.0

com.apple.driver.AppleEFIRuntime 2.0

com.apple.iokit.IOHIDFamily 2.0.0

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 300.0

com.apple.kext.AppleMatch 1.0.0d1

com.apple.driver.AppleKeyStore 2

com.apple.driver.AppleMobileFileIntegrity 1.0.5

com.apple.driver.AppleCredentialManager 1.0

com.apple.driver.DiskImages 396

com.apple.iokit.IOStorageFamily 2.0

com.apple.iokit.IOReportFamily 31

com.apple.driver.AppleFDEKeyStore 28.30

com.apple.driver.AppleACPIPlatform 3.1

com.apple.iokit.IOPCIFamily 2.9

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.corecrypto 1.0

com.apple.kec.Libm 1

com.apple.kec.pthread 1

Model: iMac15,1, BootROM IM151.0207.B01, 4 processors, Intel Core i5, 3.5 GHz, 24 GB, SMC 2.22f16

Graphics: AMD Radeon R9 M290X, AMD Radeon R9 M290X, PCIe, 2048 MB

Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1600 MHz, 0x802C, 0x384B54463531323634485A2D314736453220

Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1600 MHz, 0x802C, 0x384B54463531323634485A2D314736453220

Memory Module: BANK 0/DIMM1, 8 GB, DDR3, 1600 MHz, 0x859B, 0x43543130323436344246313630422E433136

Memory Module: BANK 1/DIMM1, 8 GB, DDR3, 1600 MHz, 0x859B, 0x43543130323436344246313630422E433136

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x142), Broadcom BCM43xx 1.0 (7.15.166.24.3)

Bluetooth: Version 4.3.4f4 15601, 3 services, 27 devices, 1 incoming serial ports

Serial ATA Device: APPLE SSD SD0128F, 121.33 GB

Serial ATA Device: APPLE HDD ST1000DM003, 1 TB

USB Device: FaceTime HD Camera (Built-in)

USB Device: BRCM20702 Hub

USB Device: Bluetooth USB Host Controller

USB Device: Keyboard Hub

USB Device: Apple Keyboard

Thunderbolt Bus: iMac, Apple Inc., 26.1