Random kernel panic crashes
I have for a long time (a few years) had problems with my iMac crashing randomly. I always thought the crashes were related to some faulty system files, as I used to get error messages popping up regarding system files not being installed properly. A few days ago I did a clean install however, but I'm still experiencing these seemingly random crashes. The screen goes black and I get the "Your computer restarted because of a problem." kernel panic message. Sometimes the computer crashes several times in a row. Here's the crash report:
Anonymous UUID: 0A6B098A-3FFE-1EEB-A8B5-99A45AF08474
Mon Apr 27 14:49:06 2015
*** Panic Report ***
panic(cpu 4 caller 0xffffff801596cffd): "a freed zone element has been modified in zone buf.8192: expected 0x53521cb96302965 but found 0xffffffffffffffff, bits changed 0xfacade3469cfd69a, at offset 8184 of 8192 in element 0xffffff804640d000, cookies 0x3f00117357ff4384 0x53521cb96302965"@/SourceCache/xnu/xnu-2782.20.48/osfmk/kern/zalloc.c:496
Backtrace (CPU 4), Frame : Return Address
0xffffff811f3dac90 : 0xffffff801592bda1
0xffffff811f3dad10 : 0xffffff801596cffd
0xffffff811f3dad80 : 0xffffff801596ca71
0xffffff811f3dadc0 : 0xffffff801596bc8e
0xffffff811f3daef0 : 0xffffff8015b2c901
0xffffff811f3daf20 : 0xffffff8015b2aea3
0xffffff811f3daf80 : 0xffffff8015b2a9c6
0xffffff811f3db060 : 0xffffff8015b2c180
0xffffff811f3db0c0 : 0xffffff8015d24f55
0xffffff811f3db120 : 0xffffff8015d746eb
0xffffff811f3db1c0 : 0xffffff8015d6f61c
0xffffff811f3db2d0 : 0xffffff8015d2eac5
0xffffff811f3db330 : 0xffffff8015d2cc70
0xffffff811f3db3a0 : 0xffffff8015d486f6
0xffffff811f3db400 : 0xffffff8015d47ab0
0xffffff811f3dbab0 : 0xffffff8015d41e07
0xffffff811f3dbbd0 : 0xffffff8015b6f7f6
0xffffff811f3dbc60 : 0xffffff8015b5eeca
0xffffff811f3dbd70 : 0xffffff8015b55778
0xffffff811f3dbf50 : 0xffffff8015e4ba86
0xffffff811f3dbfb0 : 0xffffff8015a35376
BSD process name corresponding to current thread: mds
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: 0x0000000015600000 Kernel text base: 0xffffff8015800000
__HIB text base: 0xffffff8015700000
System model name: iMac11,3 (Mac-F2238BAE)
System uptime in nanoseconds: 66609710718546
last loaded kext at 51292906552375: com.apple.driver.AppleUSBCDC 4.3.3b1 (addr 0xffffff7f985cd000, size 20480)
last unloaded kext at 51352970071954: com.apple.driver.AppleUSBCDC 4.3.3b1 (addr 0xffffff7f985cd000, size 16384)
loaded kexts:
com.apple.driver.AppleBluetoothMultitouch 85.3
com.apple.driver.AudioAUUC 1.70
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AGPM 110.19.5
com.apple.filesystems.autofs 3.0
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.AppleUpstreamUserClient 3.6.1
com.apple.kext.AMDFramebuffer 1.3.2
com.apple.iokit.IOUserEthernet 1.0.1
com.apple.AMDRadeonX3000 1.3.2
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleHWAccess 1
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.4f4
com.apple.kext.AMD5000Controller 1.3.2
com.apple.driver.AppleHV 1
com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0
com.apple.driver.AppleBacklight 170.7.4
com.apple.driver.AppleLPC 1.7.3
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleMCCSControl 1.2.11
com.apple.driver.AppleUSBCardReader 3.5.5
com.apple.driver.AppleIRController 327.5
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 36
com.apple.iokit.SCSITaskUserClient 3.7.5
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.7.1
com.apple.driver.AppleUSBHub 705.4.2
com.apple.driver.AppleFWOHCI 5.5.2
com.apple.iokit.AppleBCM5701Ethernet 10.1.3
com.apple.driver.AirPort.Atheros40 700.74.5
com.apple.driver.AppleAHCIPort 3.1.2
com.apple.driver.AppleUSBEHCI 705.4.14
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.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.AppleHIDKeyboard 176.2
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.iokit.IOSurface 97.4
com.apple.iokit.IOAcceleratorFamily2 156.14
com.apple.iokit.IOUSBUserClient 705.4.0
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.4f4
com.apple.iokit.IOBluetoothFamily 4.3.4f4
com.apple.kext.AMDSupport 1.3.2
com.apple.AppleGraphicsDeviceControl 3.10.22
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.iokit.IOSlowAdaptiveClockingFamily 1.0.0
com.apple.driver.AppleBacklightExpert 1.1.0
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.driver.AppleSMBusPCI 1.0.12d1
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.IOPlatformPluginFamily 5.9.1d7
com.apple.iokit.IOFireWireIP 2.2.6
com.apple.driver.AppleSMC 3.1.9
com.apple.driver.AppleSMBusController 1.0.13d1
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.iokit.IOSCSIBlockCommandsDevice 3.7.5
com.apple.iokit.IOUSBMassStorageClass 3.7.2
com.apple.iokit.IOUSBHIDDriver 705.4.0
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.driver.AppleUSBMergeNub 705.4.0
com.apple.driver.AppleUSBComposite 705.4.9
com.apple.iokit.IOAHCISerialATAPI 2.6.1
com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.5
com.apple.iokit.IOFireWireFamily 4.5.6
com.apple.iokit.IOEthernetAVBController 1.0.3b3
com.apple.driver.mDNSOffloadUserClient 1.0.1b8
com.apple.iokit.IO80211Family 730.60
com.apple.iokit.IONetworkingFamily 3.2
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 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: iMac11,3, BootROM IM112.0057.B01, 4 processors, Intel Core i7, 2.93 GHz, 8 GB, SMC 1.59f2
Graphics: ATI Radeon HD 5750, ATI Radeon HD 5750, PCIe, 1024 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353637334648302D4348392020
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353637334648302D4348392020
Memory Module: BANK 0/DIMM1, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353637334648302D4348392020
Memory Module: BANK 1/DIMM1, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353637334648302D4348392020
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x8F), Atheros 9280: 4.0.74.0-P2P
Bluetooth: Version 4.3.4f4 15601, 3 services, 27 devices, 1 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Serial ATA Device: ST31000528AS, 1 TB
Serial ATA Device: OPTIARC DVD RW AD-5680H
USB Device: Hub
USB Device: Internal Memory Card Reader
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
USB Device: Hub
USB Device: USB to ATA/ATAPI bridge
USB Device: IR Receiver
USB Device: Built-in iSight
Thunderbolt Bus:
iMac, OS X Yosemite (10.10.3), 27", System model name: iMac11,3