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Our Mac has kernel panicked about 5 times today. Below is the crash log if someone could help us out, cheers in advance.

> Anonymous UUID:       2FBA36C0-0496-067C-BFC9-151393EB378C
> 
> Wed Aug 12 13:08:40 2015
> 
> *** Panic Report *** panic(cpu 2 caller 0xffffff802a017cc2): Kernel trap at 0xffffff80a9f1c240, type 14=page fault, registers: CR0:
> 0x0000000080010033, CR2: 0xffffff80a9f1c240, CR3: 0x0000000000a53038,
> CR4: 0x00000000000626e0 RAX: 0x0000000000000023, RBX:
> 0xffffff8045d596d0, RCX: 0xffffff8045de1108, RDX: 0x0000000000000000
> RSP: 0xffffff803b2b3eb8, RBP: 0xffffff803b2b3ef0, RSI:
> 0x0000000000000001, RDI: 0xffffff8045dc4960 R8:  0xffffff8162ed5120,
> R9:  0xffffff803b2b3ec8, R10: 0x00007fff94e904de, R11:
> 0x0000000000000202 R12: 0xffffff8045dc4961, R13: 0xffffff802a601890,
> R14: 0xffffff8045dc4960, R15: 0xffffff8045dc4968 RFL:
> 0x0000000000010296, RIP: 0xffffff80a9f1c240, CS:  0x0000000000000008,
> SS:  0x0000000000000010 Fault CR2: 0xffffff80a9f1c240, Error code:
> 0x0000000000000010, Fault CPU: 0x2
> 
> Backtrace (CPU 2), Frame : Return Address 0xffffff803b2b3b60 :
> 0xffffff8029f2bda1  0xffffff803b2b3be0 : 0xffffff802a017cc2 
> 0xffffff803b2b3da0 : 0xffffff802a034b73  0xffffff803b2b3dc0 :
> 0xffffff80a9f1c240  0xffffff803b2b3ef0 : 0xffffff8029f24532 
> 0xffffff803b2b3f10 : 0xffffff802a0031ea  0xffffff803b2b3fb0 :
> 0xffffff802a035396 
> 
> BSD process name corresponding to current thread: WindowServer
> 
> Mac OS version: 14E46
> 
> Kernel version: Darwin Kernel Version 14.4.0: Thu May 28 11:35:04 PDT
> 2015; root:xnu-2782.30.5~1/RELEASE_X86_64 Kernel UUID:
> E3C26B2F-8B97-3F1D-B193-690F7E34F830 Kernel slide:    
> 0x0000000029c00000 Kernel text base: 0xffffff8029e00000
> __HIB  text base: 0xffffff8029d00000 System model name: iMac12,2 (Mac-942B59F58194171B)
> 
> System uptime in nanoseconds: 8362170621845 last loaded kext at
> 7923039275404: com.apple.driver.AppleUSBCDC
> 4.3.3b1 (addr 0xffffff7facd99000, size 20480) last unloaded kext at 7983061712345: com.apple.driver.AppleUSBCDC
> 4.3.3b1 (addr 0xffffff7facd99000, size 16384) loaded kexts: com.aladdin.kext.aksfridge
> 1.0.2 com.apple.filesystems.smbfs
> 3.0.1 com.apple.driver.AudioAUUC
> 1.70 com.apple.driver.AppleHWSensor
> 1.9.5d0 com.apple.driver.AGPM  110.19.6 com.apple.filesystems.autofs
> 3.0 com.apple.iokit.IOBluetoothSerialManager
> 4.3.5f8 com.apple.driver.AppleOSXWatchdog 1 com.apple.driver.AppleMikeyHIDDriver 124
> com.apple.driver.AppleMikeyDriver
> 272.18.1 com.apple.driver.AppleHDA
> 272.18.1 com.apple.driver.AppleUpstreamUserClient
> 3.6.1 com.apple.kext.AMDFramebuffer
> 1.3.2 com.apple.iokit.IOUserEthernet
> 1.0.1 com.apple.Dont_Steal_Mac_OS_X
> 7.0.0 com.apple.AMDRadeonX3000  1.3.2 com.apple.driver.AppleHWAccess 1 com.apple.driver.AppleHV  1 com.apple.driver.AppleThunderboltIP
> 2.0.2 com.apple.driver.AppleBacklight
> 170.7.4 com.apple.driver.AppleLPC
> 1.7.3 com.apple.driver.AppleSMCPDRC
> 1.0.0 com.apple.driver.AppleSMCLMU
> 2.0.7d0 com.apple.driver.AppleMCCSControl
> 1.2.12 com.apple.kext.AMD6000Controller
> 1.3.2 com.apple.driver.AppleIntelSlowAdaptiveClocking
> 4.0.0 com.apple.driver.AppleIntelHD3000Graphics
> 10.0.0 com.apple.driver.ACPI_SMC_PlatformPlugin
> 1.0.0 com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport
> 4.3.5f8 com.apple.driver.AppleIntelSNBGraphicsFB
> 10.0.0 com.apple.driver.AppleIRController
> 327.5 com.apple.iokit.SCSITaskUserClient
> 3.7.5 com.apple.driver.AppleUSBCardReader
> 3.5.5 com.apple.AppleFSCompression.AppleFSCompressionTypeDataless
> 1.0.0d1 com.apple.AppleFSCompression.AppleFSCompressionTypeZlib
> 1.0.0 com.apple.BootCache  36 com.apple.driver.XsanFilter 404 com.apple.iokit.IOAHCIBlockStorage
> 2.7.1 com.apple.driver.AppleUSBHub
> 705.4.2 com.apple.driver.AirPort.Atheros40
> 700.74.5 com.apple.iokit.AppleBCM5701Ethernet
> 10.1.3 com.apple.driver.AppleFWOHCI
> 5.5.2 com.apple.driver.AppleUSBEHCI
> 705.4.14 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.driver.AppleIntelCPUPowerManagementClient
> 218.0.0 com.apple.nke.applicationfirewall 161 com.apple.security.quarantine 3 com.apple.security.TMSafetyNet 8
> com.apple.driver.AppleIntelCPUPowerManagement
> 218.0.0 com.apple.driver.AppleBluetoothHIDKeyboard
> 176.2 com.apple.driver.IOBluetoothHIDDriver
> 4.3.5f8 com.apple.driver.AppleHIDKeyboard
> 176.2 com.apple.kext.triggers  1.0 com.apple.iokit.IOSerialFamily 11 com.apple.driver.DspFuncLib
> 272.18.1 com.apple.kext.OSvKernDSPLib
> 1.15 com.apple.iokit.IOSurface
> 97.4 com.apple.iokit.IOAcceleratorFamily2
> 156.16 com.apple.driver.AppleBacklightExpert
> 1.1.0 com.apple.iokit.IOUSBUserClient
> 705.4.0 com.apple.driver.AppleSMBusPCI
> 1.0.12d1 com.apple.driver.AppleThunderboltEDMSink
> 4.0.3 com.apple.driver.AppleSMBusController
> 1.0.13d1 com.apple.kext.AMDSupport
> 1.3.2 com.apple.AppleGraphicsDeviceControl
> 3.10.24 com.apple.iokit.IOSlowAdaptiveClockingFamily
> 1.0.0 com.apple.iokit.IOFireWireIP
> 2.2.6 com.apple.driver.AppleSMC
> 3.1.9 com.apple.driver.IOPlatformPluginLegacy
> 1.0.0 com.apple.driver.IOPlatformPluginFamily
> 5.9.1d7 com.apple.iokit.IOBluetoothHostControllerUSBTransport
> 4.3.5f8 com.apple.iokit.IOBluetoothFamily
> 4.3.5f8 com.apple.driver.AppleHDAController
> 272.18.1 com.apple.iokit.IOHDAFamily
> 272.18.1 com.apple.iokit.IOAudioFamily
> 203.3 com.apple.vecLib.kext  1.2.0 com.apple.iokit.IONDRVSupport
> 2.4.1 com.apple.iokit.IOGraphicsFamily
> 2.4.1 com.apple.iokit.IOSCSIMultimediaCommandsDevice
> 3.7.5 com.apple.iokit.IOBDStorageFamily
> 1.7 com.apple.iokit.IODVDStorageFamily
> 1.7.1 com.apple.iokit.IOCDStorageFamily
> 1.7.1 com.apple.iokit.IOAHCISerialATAPI
> 2.6.1 com.apple.iokit.IOUSBHIDDriver
> 705.4.0 com.apple.iokit.IOSCSIBlockCommandsDevice
> 3.7.5 com.apple.iokit.IOUSBMassStorageClass
> 3.7.2 com.apple.iokit.IOSCSIArchitectureModelFamily
> 3.7.5 com.apple.driver.AppleUSBMergeNub
> 705.4.0 com.apple.driver.AppleUSBComposite
> 705.4.9 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.IO80211Family
> 730.60 com.apple.iokit.IOEthernetAVBController
> 1.0.3b3 com.apple.driver.mDNSOffloadUserClient
> 1.0.1b8 com.apple.iokit.IONetworkingFamily
> 3.2 com.apple.iokit.IOFireWireFamily
> 4.5.7 com.apple.iokit.IOAHCIFamily
> 2.7.5 com.apple.iokit.IOUSBFamily
> 720.4.4 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 397 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.Libm  1 com.apple.kec.pthread  1 com.apple.kec.corecrypto  1.0

It restarts and then we work on it and then say around an hour later it kernel panics again !

1

The basic troubleshooting question is: When was the last time it wasn't having the kernel panic? What has changed on the system since then?

Usually some new piece of software has been downloaded and installed (wittingly or un-wittingly, or perhaps by someone else using the machine, without your knowledge), or some new peripheral has been connected to the computer, or some new client/server relationship has been established.

So ask yourself: "What has changed?".

The next step is to systematically un-install and remove the new thing or things and see if this corrects the problem.

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