I've the following kernel panic
Anonymous UUID: 55E7769C-B596-6BC8-7C49-B7292D9F3A27
Sun May 27 14:37:28 2018
*** Panic Report ***
panic(cpu 0 caller 0xffffff801ed88c2d): Kernel trap at 0xffffff803209c6d0, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0xffffff803209c6d0, CR3: 0x0000000207706000, CR4: 0x00000000000026e0
RAX: 0x0000000000000000, RBX: 0x0000000000000006, RCX: 0xffffff80333ed420, RDX: 0xffffff803357c8b8
RSP: 0xffffff912bab3ed0, RBP: 0x0000000000000005, RSI: 0xffffff803353487e, RDI: 0xffffff803357c8b8
R8: 0xffffff80316c4000, R9: 0x0000000000000003, R10: 0xffffff8033516340, R11: 0x0000000000000018
R12: 0xffffff80333ed420, R13: 0x00007fff6dc47eb8, R14: 0xffffff912bab3e50, R15: 0xffffff80333ed3e0
RFL: 0x0000000000010282, RIP: 0xffffff803209c6d0, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0xffffff803209c6d0, Error code: 0x0000000000000011, Fault CPU: 0x0 Kernel NX fault, PL: 0, VF: 2
Backtrace (CPU 0), Frame : Return Address
0xffffff912bab3980 : 0xffffff801ec6e166
0xffffff912bab39d0 : 0xffffff801ed96714
0xffffff912bab3a10 : 0xffffff801ed88a00
0xffffff912bab3a90 : 0xffffff801ec20180
0xffffff912bab3ab0 : 0xffffff801ec6dbdc
0xffffff912bab3be0 : 0xffffff801ec6d99c
0xffffff912bab3c40 : 0xffffff801ed88c2d
0xffffff912bab3dc0 : 0xffffff801ec20180
0xffffff912bab3de0 : 0xffffff803209c6d0
Unaligned frame
Backtrace terminated-invalid frame pointer 0x5
BSD process name corresponding to current thread: coreduetd
Mac OS version:
17E202
Kernel version:
Darwin Kernel Version 17.5.0: Fri Apr 13 19:32:32 PDT 2018; root:xnu-4570.51.2~1/RELEASE_X86_64
Kernel UUID: 7134F18E-AAC2-3C5B-B2C4-ABB799B4B9DF
Kernel slide: 0x000000001ea00000
Kernel text base: 0xffffff801ec00000
__HIB text base: 0xffffff801eb00000
System model name: iMac10,1 (Mac-F2268CC8)
System uptime in nanoseconds: 6274010351
last loaded kext at 2385259134: com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 6.0.5f3 (addr 0xffffff7fa1869000, size 49152)
loaded kexts:
com.apple.iokit.IOBluetoothUSBDFU 6.0.5f3
com.apple.driver.AppleIRController 353
com.apple.iokit.SCSITaskUserClient 404.30.2
com.apple.driver.AppleUSBODD 439.50.6
com.apple.driver.AppleUSBStorageCoexistentDriver 439.50.6
com.apple.driver.AppleUSBCardReader 439.50.6
com.apple.driver.AppleFileSystemDriver 3.0.1
com.apple.filesystems.hfs.kext 407.50.6
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.BootCache 40
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0
com.apple.filesystems.apfs 748.51.0
com.apple.driver.AppleFWOHCI 5.5.9
com.apple.driver.AirPort.Atheros40 700.74.5
com.apple.driver.AppleAHCIPort 329.50.2
com.apple.nvenet 2.0.22
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleACPIButtons 6.1
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 6.1
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 220.50.1
com.apple.nke.applicationfirewall 183
com.apple.security.TMSafetyNet 8
com.apple.security.quarantine 3
com.apple.driver.AppleIntelCPUPowerManagement 220.50.1
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 6.0.5f3
com.apple.iokit.IOBluetoothHostControllerUSBTransport 6.0.5f3
com.apple.iokit.IOBluetoothHostControllerTransport 6.0.5f3
com.apple.iokit.IOBluetoothFamily 6.0.5f3
com.apple.driver.usb.IOUSBHostHIDDevice 1.2
com.apple.driver.usb.AppleUSBHub 1.2
com.apple.iokit.IOSCSIMultimediaCommandsDevice 404.30.2
com.apple.iokit.IOBDStorageFamily 1.8
com.apple.iokit.IODVDStorageFamily 1.8
com.apple.iokit.IOCDStorageFamily 1.8
com.apple.iokit.IOUSBMassStorageClass 4.0.4
com.apple.driver.usb.cdc 5.0.0
com.apple.driver.usb.networking 5.0.0
com.apple.driver.usb.AppleUSBHostCompositeDevice 1.2
com.apple.filesystems.hfs.encodings.kext 1
com.apple.driver.AppleXsanScheme 3
com.apple.iokit.IOAHCIBlockStorage 301.40.2
com.apple.iokit.IOFireWireFamily 4.7.0
com.apple.iokit.IO80211Family 1200.12.2
com.apple.driver.corecapture 1.0.4
com.apple.iokit.IOAHCIFamily 288
com.apple.driver.NVSMU 2.2.9
com.apple.driver.AppleUSBMergeNub 900.4.1
com.apple.driver.usb.AppleUSBEHCIPCI 1.2
com.apple.driver.usb.AppleUSBOHCIPCI 1.2
com.apple.driver.usb.AppleUSBOHCI 1.2
com.apple.driver.usb.AppleUSBEHCI 1.2
com.apple.driver.usb.AppleUSBHostPacketFilter 1.0
com.apple.iokit.IOUSBFamily 900.4.1
com.apple.driver.AppleEFINVRAM 2.1
com.apple.driver.AppleEFIRuntime 2.1
com.apple.driver.AppleUSBHostMergeProperties 1.2
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.DiskImages 480.50.10
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleEffaceableStorage 1.0
com.apple.driver.AppleKeyStore 2
com.apple.driver.AppleUSBTDM 439.50.6
com.apple.driver.AppleMobileFileIntegrity 1.0.5
com.apple.iokit.IOUSBMassStorageDriver 140.50.3
com.apple.iokit.IOSCSIBlockCommandsDevice 404.30.2
com.apple.iokit.IOSCSIArchitectureModelFamily 404.30.2
com.apple.iokit.IOStorageFamily 2.1
com.apple.driver.AppleCredentialManager 1.0
com.apple.driver.KernelRelayHost 1
com.apple.iokit.IOUSBHostFamily 1.2
com.apple.driver.usb.AppleUSBCommon 1.0
com.apple.driver.AppleBusPowerController 1.0
com.apple.driver.AppleSEPManager 1.0.1
com.apple.driver.IOSlaveProcessor 1
com.apple.iokit.IOReportFamily 31
com.apple.iokit.IOTimeSyncFamily 675.12
com.apple.iokit.IONetworkingFamily 3.4
com.apple.driver.AppleACPIPlatform 6.1
com.apple.driver.AppleSMC 3.1.9
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.pthread 1
com.apple.kec.Libm 1
com.apple.kec.corecrypto 1.0
EOF
Model: iMac10,1, BootROM IM101.00D0.B00, 2 processors, Intel Core 2 Duo, 3,06 GHz, 8 GB, SMC 1.52f9
Graphics: NVIDIA GeForce 9400, NVIDIA GeForce 9400
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1067 MHz, 0x802C, 0x384A54463235363634485A2D3147364D3120
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1067 MHz, 0x802C, 0x384A54463235363634485A2D3147364D3120
Memory Module: BANK 0/DIMM1, 2 GB, DDR3, 1067 MHz, 0x80AD, 0x484D54313235533642465238432D47372020
Memory Module: BANK 1/DIMM1, 2 GB, DDR3, 1067 MHz, 0x80AD, 0x484D54313235533642465238432D47372020
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x8F), Atheros 9280: 4.0.74.0-P2P
Bluetooth: Version 6.0.5f3, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: Hitachi HDT721050SLA360, 500,11 GB
Serial ATA Device: KINGSTON SV300S37A120G, 120,03 GB
USB Device: USB Bus
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
USB Device: USB Bus
USB Device: IR Receiver
USB Device: USB Optical Mouse
USB Device: USB 2.0 Bus
USB Device: Internal Memory Card Reader
USB Device: USB 2.0 Bus
USB Device: Built-in iSight
USB Device: External
Thunderbolt Bus:
Can anyone help me to understand how to read this report in order to understand what caused the crash? I've the kernel panic several days a month.
Best Answer
Kernel panics are generally not supposed to happen.
It can be impossible to determine the cause of a single kernel panic. They can be related to kernel bugs, version incompatibility, driver bugs and/or hardware problems.
As you have often recurring kernel panics, you should save the text of many of these kernel panics. Then you can compare them to each other to find a common thread, if any. For example, in this case the current process is coreduetd - is that always the case when it crashes? (then that could be the cause, although that would be due to Apple bugs).
The general error described in this kernel panic is a page fault - i.e. the kernel trying to access memory that isn't mapped for access by the kernel. This is due to kernel bugs or hardware error.
If it is always page faults, but various processes and device drivers - then that is an indication of either flawed OS installation or hardware error.
In your case I would recommend running the system for an extended period of time without any external devices of any kind plugged in (besides those necessary for the system to function obviously). If the kernel panic still occurs, that's a great data point.
In that case start the Mac in Recovery mode (hold down Cmd-R when booting). If kernel panics still happen in Recovery mode, it is much less likely that the problem is related to your software installation. Instead it is likely caused by hardware errors.
Hardware errors that cause page faults are usually defective RAM modules or lack of proper cooling. Check that fans are working properly, exhausts are not covered and temperature is nominal. If your computer has replaceable memory, try running with only one memory module plugged in. If crashes still occur, swap with another module.
Hopefully this should allow you to determine the true cause of the panics.