Q: kernel panic

Receive regular kernel panics and all logs are identical to the one below.

Anonymous UUID:       A0D732EB-3CEC-5671-AD0D-7B43BE359239

Sun Oct 11 21:05:22 2015

*** Panic Report ***

panic(cpu 1 caller 0xffffff801b733d41): "hfs_UNswap_BTNode: invalid backward link (0x0001fa22 == 0x0001fa22)\n"@/SourceCache/xnu/xnu-2782.40.9/bsd/hfs/hfs_endian.c:303

Backtrace (CPU 1), Frame : Return Address

0xffffff8125a9ba90 : 0xffffff801b32ad21

0xffffff8125a9bb10 : 0xffffff801b733d41

0xffffff8125a9bb60 : 0xffffff801b7243c7

0xffffff8125a9bb90 : 0xffffff801b579295

0xffffff8125a9bca0 : 0xffffff801b57870a

0xffffff8125a9bd50 : 0xffffff801b576ca4

0xffffff8125a9bda0 : 0xffffff801b75d951

0xffffff8125a9bdd0 : 0xffffff801b7548cf

0xffffff8125a9beb0 : 0xffffff801b5576ab

0xffffff8125a9bed0 : 0xffffff801b541fc4

0xffffff8125a9bf40 : 0xffffff801b54c177

0xffffff8125a9bf50 : 0xffffff801b84b376

0xffffff8125a9bfb0 : 0xffffff801b4344a6

BSD process name corresponding to current thread: launchd

Mac OS version:

14F27

Kernel version:

Darwin Kernel Version 14.5.0: Wed Jul 29 02:26:53 PDT 2015; root:xnu-2782.40.9~1/RELEASE_X86_64

Kernel UUID: 58F06365-45C7-3CA7-B80D-173AFD1A03C4

Kernel slide:     0x000000001b000000

Kernel text base: 0xffffff801b200000

__HIB  text base: 0xffffff801b100000

System model name: MacBookAir6,2 (Mac-7DF21CB3ED6977E5)

System uptime in nanoseconds: 2119308160009

last loaded kext at 1846203174263: com.apple.filesystems.afpfs 11.0 (addr 0xffffff7f9da55000, size 364544)

last unloaded kext at 106299368646: com.apple.driver.AppleIntelLpssI2C 2.0.57 (addr 0xffffff7f9d338000, size 36864)

loaded kexts:

com.apple.filesystems.afpfs 11.0

com.apple.nke.asp-tcp 8.0.0

com.apple.filesystems.smbfs 3.0.2

com.apple.filesystems.autofs 3.0

com.apple.driver.AudioAUUC 1.70

com.apple.iokit.IOBluetoothSerialManager 4.3.6f3

com.apple.driver.AGPM 110.19.6

com.apple.driver.ApplePlatformEnabler 2.2.0d4

com.apple.driver.X86PlatformShim 1.0.0

com.apple.driver.AppleHDA 272.18.1

com.apple.driver.AppleOSXWatchdog 1

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.AppleThunderboltIP 2.0.2

com.apple.driver.AppleHV 1

com.apple.driver.AppleUpstreamUserClient 3.6.1

com.apple.driver.AppleCameraInterface 5.36.0

com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0

com.apple.driver.AppleBacklight 170.7.4

com.apple.driver.AppleMCCSControl 1.2.12

com.apple.driver.AppleSMCLMU 2.0.7d0

com.apple.driver.AppleLPC 1.7.3

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.6f3

com.apple.driver.AppleIntelHD5000Graphics 10.0.6

com.apple.driver.AppleIntelFramebufferAzul 10.0.6

com.apple.driver.AppleUSBCardReader 3.5.5

com.apple.driver.AppleUSBHub 705.4.2

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0

com.apple.BootCache 36

com.apple.driver.AppleTopCaseHIDEventDriver 67

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.7.1

com.apple.driver.AppleAHCIPort 3.1.2

com.apple.driver.AirPort.Brcm4360 930.37.3

com.apple.driver.AppleUSBXHCI 710.4.11

com.apple.driver.AppleSmartBatteryManager 161.0.0

com.apple.driver.AppleACPIButtons 3.1

com.apple.driver.AppleRTC 2.0

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.security.SecureRemotePassword 1.0

com.apple.kext.triggers 1.0

com.apple.driver.DspFuncLib 272.18.1

com.apple.kext.OSvKernDSPLib 1.15

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.driver.X86PlatformPlugin 1.0.0

com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0

com.apple.driver.AppleBacklightExpert 1.1.0

com.apple.driver.AppleSMBusController 1.0.13d1

com.apple.driver.IOPlatformPluginFamily 5.9.1d7

com.apple.driver.AppleSMC 3.1.9

com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.6f3

com.apple.iokit.IOBluetoothFamily 4.3.6f3

com.apple.iokit.IOUSBUserClient 705.4.0

com.apple.iokit.IOSerialFamily 11

com.apple.iokit.IOSurface 97.4

com.apple.iokit.IONDRVSupport 2.4.1

com.apple.AppleGraphicsDeviceControl 3.10.25

com.apple.iokit.IOAcceleratorFamily2 156.16

com.apple.iokit.IOGraphicsFamily 2.4.1

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.CoreStorage 471.30.1

com.apple.driver.AppleHIDKeyboard 176.2

com.apple.driver.AppleHSSPIHIDDriver 41.3

com.apple.driver.AppleMultitouchDriver 264.6

com.apple.iokit.IOAHCIFamily 2.7.5

com.apple.driver.AppleThunderboltDPInAdapter 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.driver.mDNSOffloadUserClient 1.0.1b8

com.apple.iokit.IONetworkingFamily 3.2

com.apple.driver.AppleHSSPISupport 41.3

com.apple.driver.AppleIntelLpssSpiController 2.0.57

com.apple.driver.AppleIntelLpssGspi 2.0.57

com.apple.iokit.IOUSBFamily 720.4.4

com.apple.driver.AppleIntelLpssDmac 2.0.57

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 398

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

Computer:

MacBookAir 6,2

Processor Name: Intel Core i5

Processor Speed: 1.4 GHz

8 GB RAM