Discovery! Claude et al understands crash reports

Perhaps this is old stuff to everyone else, but this morning I discovered another LLM super power. ClaudeAI can understand a crash report and explain in plain English.

Here’s the one from this morning.

Let me break this down for you in clear terms:

Your Mac experienced a kernel panic (a severe system error) during a sleep transition - specifically when it was trying to go to sleep. The computer waited 35 seconds for some power state changes to complete, but they never did.

The suspect here is identified as “com.apple.driver.AppleT6000PCIeC” - this is a driver that handles PCIe (peripheral component interconnect express) operations on T6000 series chips. However, there’s an interesting detail here - you mentioned you have an M1 Mac, but this error references T6000 series hardware, which is actually found in M2 Macs. This suggests you might actually be using an M2 Mac rather than an M1.

The error occurred on CPU core 1 of your system (Macs have multiple CPU cores, and this panic happened specifically on core 1). The system was running macOS version 24.2.0, which corresponds to MacOS Sonoma.

What likely happened is:

  1. Your computer tried to go to sleep
  2. A hardware component (likely something connected to the PCIe bus) didn’t respond properly to the sleep command
  3. After waiting 35 seconds, the system gave up and crashed
  4. This triggered the kernel panic that generated this report

Given your background in technical writing, you might be interested to know that these kinds of sleep/wake issues often occur due to conflicts between power management and peripheral devices or their drivers. They’re usually not indicative of hardware failure, but rather of a temporary communication breakdown between different system components.

Would you like me to dig deeper into any particular aspect of this report? There’s quite a bit more technical detail available if you’re interested in exploring a specific part of what happened.

Here’s the original report

panic(cpu 1 caller 0xfffffe001bedc358): Sleep transition timed out after 35 seconds while calling power state change callbacks. Suspected bundle: com.apple.driver.AppleT6000PCIeC. Thread 0x2d894a4.
Debugger message: panic
Memory ID: 0x6
OS release type: User
OS version: 24C101
Kernel version: Darwin Kernel Version 24.2.0: Fri Dec 6 19:01:59 PST 2024; root:xnu-11215.61.5~2/RELEASE_ARM64_T6000
Fileset Kernelcache UUID:
Kernel UUID:
Boot session UUID:
iBoot version: iBoot-11881.61.3
secure boot?: YES
roots installed: 0
Paniclog version: 14
KernelCache slide:
KernelCache base:
Kernel slide:
Kernel text base:
Kernel text exec slide:
Kernel text exec base:
mach_absolute_time: 0x2447b54395a2
Epoch Time: sec usec
Boot :
Sleep :
Wake :
Calendar:

Zone info:
Zone map: 0xfffffe1000550000 - 0xfffffe3000550000
. VM :
. RO :
. GEN0 :
. GEN1 :
. GEN2 :
. GEN3 :
. DATA :
Metadata: 0xfffffe3828520000 - 0xfffffe3830520000
Bitmaps : 0xfffffe3830520000 - 0xfffffe3836234000
Extra : 0 - 0

TPIDRx_ELy = {1: 0xfffffe1ff7801800 0: 0x0000000000000001 0ro: 0x0000000000000000 }
CORE 0 PVH locks held: None
CORE 1 PVH locks held: None
CORE 2 PVH locks held: None
CORE 3 PVH locks held: None
CORE 4 PVH locks held: None
CORE 5 PVH locks held: None
CORE 6 PVH locks held: None
CORE 7 PVH locks held: None
CORE 0: PC=0xfffffe001b701ffc, LR=
CORE 1 is the one that panicked. Check the full backtrace for details.
CORE 2: PC=0xfffffe001b701ffc, LR=
CORE 3: PC=0xfffffe001b701ffc, LR=
CORE 4: PC=0xfffffe001b701ffc, LR=
CORE 5: PC=0xfffffe001b701ffc, LR=
CORE 6: PC=0xfffffe001b701ffc, LR=
CORE 7: PC=0xfffffe001b701ffc, LR=
Compressor Info: 31% of compressed pages limit (OK) and 28% of segments limit (OK) with 16 swapfiles and OK swap space
Panicked task 0xfffffe1b337b4170: 0 pages, 755 threads: pid 0: kernel_task
Panicked thread: 0xfffffe1ff7801800, backtrace: 0xfffffe7c0bfeb4d0, tid: 47748277
lr: 0xfffffe001b6c4fcc fp:
lr: 0xfffffe001b81e9cc fp:
lr: 0xfffffe001b81cdd4 fp:
lr: 0xfffffe001b66fb88 fp:
lr: 0xfffffe001b6c48d0 fp:
lr: 0xfffffe001bf31bc4 fp:
lr: 0xfffffe001bedc358 fp:
lr: 0xfffffe001be05ab8 fp:
lr: 0xfffffe001b72bb6c fp:
lr: 0xfffffe001b72cc48 fp:
lr: 0xfffffe001b678f08 fp:

last started kext at 1546670227386: com.apple.macos.driver.AppleUSBEthernetHost 8.1.1 (addr 0xfffffe001a608d50, size 4588)
loaded kexts:
com.apple.macos.driver.AppleUSBEthernetHost 8.1.1
com.apple.driver.usb.AppleUSBHostiOSDevice 1.0
com.apple.filesystems.autofs 3.0
com.apple.iokit.SCSITaskUserClient 500
com.apple.driver.AppleUSBMassStorageInterfaceNub 556
com.apple.driver.usb.AppleUSBHostBillboardDevice 1.0
com.apple.driver.AppleTopCaseHIDEventDriver 8420.1
com.apple.driver.AppleBiometricServices 1
com.apple.driver.CoreKDL 1
com.apple.driver.DiskImages.ReadWriteDiskImage 493.0.0
com.apple.driver.DiskImages.UDIFDiskImage 493.0.0
com.apple.driver.DiskImages.RAMBackingStore 493.0.0
com.apple.driver.DiskImages.FileBackingStore 493.0.0
com.apple.driver.SEPHibernation 1
com.apple.driver.AppleFileSystemDriver 3.0.1
com.apple.nke.l2tp 1.9
com.apple.filesystems.tmpfs 1
com.apple.driver.AppleUSBDeviceNCM 5.0.0
com.apple.filesystems.nfs 1
com.apple.filesystems.lifs 1
com.apple.filesystems.apfs 2317.61.2
com.apple.IOTextEncryptionFamily 1.0.0
com.apple.filesystems.hfs.kext 677.60.1
com.apple.security.BootPolicy 1
com.apple.BootCache 40
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleALSColorSensor 1.0.0d1
com.apple.driver.AppleAOPVoiceTrigger 420.7
com.apple.driver.AppleThunderboltIP 4.0.3
com.apple.driver.ApplePMP 1
com.apple.driver.ApplePMPFirmware 1
com.apple.driver.AppleSmartIO2 1
com.apple.driver.AppleCS42L84Audio 820.18
com.apple.AppleEmbeddedSimpleSPINORFlasher 1
com.apple.driver.AppleSN012776Amp 820.18
com.apple.driver.AppleT6000SOCTuner 1
com.apple.driver.AppleT6000CLPCv3 1
com.apple.driver.AppleS5L8960XNCO 1
com.apple.driver.AppleT6000PMGR 1
com.apple.driver.AppleEventLogHandler 1
com.apple.driver.AppleSamsungSerial 1.0.0d1
com.apple.driver.AppleSerialShim 1
com.apple.driver.AppleDPDisplayTCON 1
com.apple.driver.AppleInterruptControllerV2 1.0.0d1
com.apple.driver.AppleMCDP29XXUpdateSupport 1
com.apple.driver.AppleAVD 808
com.apple.driver.AppleProResHW 426.1
com.apple.driver.AppleS8000AES 1
com.apple.driver.AppleS8000DWI 1.0.0d1
com.apple.driver.AppleMobileDispT600X-DCP 140.0
com.apple.driver.usb.AppleSynopsysUSB40XHCI 1
com.apple.driver.AppleJPEGDriver 7.1.5
com.apple.driver.AppleAVE2 803.48.1
com.apple.driver.AppleT8110DART 1
com.apple.AGXG13X 323.15
com.apple.driver.AppleBluetoothModule 1
com.apple.driver.AppleBCMWLANBusInterfacePCIe 1
com.apple.driver.AppleS5L8920XPWM 1.0.0d1
com.apple.driver.AudioDMAController-T600x 420.19
com.apple.driver.AppleT6000DART 1
com.apple.driver.AppleSPIMC 1
com.apple.driver.AppleS5L8940XI2C 1.0.0d2
com.apple.driver.AppleT6000 1
com.apple.driver.AppleSDXC 3.5.3
com.apple.driver.AppleM68Buttons 1.0.0d1
com.apple.iokit.IOUserEthernet 1.0.1
com.apple.driver.usb.AppleUSBUserHCI 1
com.apple.iokit.IOKitRegistryCompatibility 1
com.apple.iokit.EndpointSecurity 1
com.apple.driver.AppleDiskImages2 379.60.1
com.apple.AppleSystemPolicy 2.0.0
com.apple.kec.InvalidateHmac 1
com.apple.kec.AppleEncryptedArchive 1
com.apple.driver.usb.cdc.ecm 5.0.0
com.apple.driver.usb.cdc.acm 5.0.0
com.apple.driver.usb.serial 6.0.0
com.apple.driver.usb.cdc.ncm 5.0.0
com.apple.driver.AppleUSBMergeNub 900.4.2
com.apple.driver.usb.AppleUSBXHCIPCI 1.2
com.apple.driver.driverkit.serial 6.0.0
com.apple.driver.usb.IOUSBHostHIDDevice 1.2
com.apple.driver.AppleThunderboltPCIUpAdapter 4.1.1
com.apple.driver.AppleThunderboltDPOutAdapter 8.5.1
com.apple.driver.usb.cdc 5.0.0
com.apple.driver.AppleUSBAudio 720.24
com.apple.iokit.IOAudioFamily 600.2
com.apple.vecLib.kext 1.2.0
com.apple.driver.AppleHIDKeyboard 8010.1
com.apple.driver.AppleHSBluetoothDriver 8420.1
com.apple.driver.IOBluetoothHIDDriver 9.0.0
com.apple.driver.AppleActuatorDriver 8420.1
com.apple.driver.AppleMultitouchDriver 8420.1
com.apple.driver.AppleMesaSEPDriver 100.99
com.apple.iokit.IOBiometricFamily 1
com.apple.driver.AppleUVDMDriver 1.0.0
com.apple.driver.AppleUVDM 1.0.0
com.apple.iokit.IOAVBFamily 1320.3
com.apple.driver.DiskImages.KernelBacked 493.0.0
com.apple.driver.AppleSEPHDCPManager 1.0.1
com.apple.driver.AppleTrustedAccessory 1
com.apple.iokit.AppleSEPGenericTransfer 1
com.apple.driver.AppleXsanScheme 3
com.apple.nke.ppp 1.9
com.apple.driver.usb.networking 5.0.0
com.apple.driver.AppleBSDKextStarter 3
com.apple.kext.triggers 1.0
com.apple.filesystems.hfs.encodings.kext 1
com.apple.driver.AppleSyntheticGameController 12.2.1
com.apple.driver.AppleBTM 1.0.1
com.apple.driver.IOHIDPowerSource 1
com.apple.driver.AppleCallbackPowerSource 1
com.apple.driver.AppleConvergedIPCOLYBTControl 1
com.apple.driver.AppleConvergedPCI 1
com.apple.driver.AppleBluetoothDebug 1
com.apple.driver.AppleAOPAudio 420.2
com.apple.driver.AppleThunderboltPCIDownAdapter 4.1.1
com.apple.driver.AppleThunderboltUSBDownAdapter 1.0.4
com.apple.driver.AppleThunderboltDPInAdapter 8.5.1
com.apple.driver.AppleThunderboltDPAdapterFamily 8.5.1
com.apple.driver.AppleHIDTransportSPI 8000.26
com.apple.driver.AppleHIDTransport 8000.26
com.apple.driver.AppleInputDeviceSupport 8000.26
com.apple.driver.AppleSPU 1
com.apple.driver.AppleCSEmbeddedAudio 820.18
com.apple.driver.AppleDiagnosticDataAccessReadOnly 1.0.0
com.apple.driver.AppleHPM 3.4.4
com.apple.driver.AppleDCPDPTXProxy 1.0.0
com.apple.driver.DCPDPFamilyProxy 1
com.apple.driver.AppleEmbeddedAudio 820.18
com.apple.iokit.AppleARMIISAudio 420.14
com.apple.driver.IISAudioIsolatedStreamECProxy 420.14
com.apple.driver.ExclavesAudioKext 220.24
com.apple.plugin.IOgPTPPlugin 1320.8
com.apple.driver.ApplePassthroughPPM 3.0
com.apple.driver.ApplePMGR 1
com.apple.driver.AppleSPMIPMU 1.0.1
com.apple.driver.AppleDialogPMU 1.0.1
com.apple.driver.AppleStockholmControl 1.0.0
com.apple.iokit.IONVMeFamily 2.1.0
com.apple.driver.AppleNANDConfigAccess 1.0.0
com.apple.AGXFirmwareKextG13XRTBuddy 323.15
com.apple.AGXFirmwareKextRTBuddy64 323.15
com.apple.driver.AppleARMWatchdogTimer 1
com.apple.driver.AppleDisplayCrossbar 1.0.0
com.apple.iokit.IODisplayPortFamily 1.0.0
com.apple.driver.AppleSPMI 1.0.1
com.apple.driver.AppleSART 1
com.apple.iokit.IOMobileGraphicsFamily-DCP 343.0.0
com.apple.iokit.IOMobileGraphicsFamily 343.0.0
com.apple.driver.AppleT6000TypeCPhy 1
com.apple.driver.AppleT8103TypeCPhy 1
com.apple.driver.AppleUSBXDCIARM 1.0
com.apple.driver.AppleUSBXDCI 1.0
com.apple.iokit.IOUSBDeviceFamily 2.0.0
com.apple.driver.usb.AppleSynopsysUSBXHCI 1
com.apple.driver.usb.AppleUSBXHCI 1.2
com.apple.driver.AppleTypeCPhy 1
com.apple.driver.AppleEmbeddedUSBHost 1
com.apple.driver.usb.AppleUSBHub 1.2
com.apple.driver.usb.AppleUSBHostCompositeDevice 1.2
com.apple.driver.AppleDCP 1
com.apple.iokit.IOGPUFamily 104.1.2
com.apple.driver.AppleA7IOP-ASCWrap-v4 1.0.2
com.apple.driver.DCPAVFamilyProxy 1
com.apple.driver.AppleFirmwareKit 1
com.apple.driver.AppleM2ScalerCSCDriver 265.0.0
com.apple.driver.AppleThunderboltNHI 7.2.81
com.apple.driver.AppleMobileApNonce 1
com.apple.driver.AppleA7IOP-M3Wrap-v2 1.0.2
com.apple.driver.AppleT6000PCIeC 1
com.apple.iokit.IOThunderboltFamily 9.3.3
com.apple.iokit.IOPortFamily 1.0
com.apple.driver.ApplePIODMA 1
com.apple.driver.AppleT600xPCIe 1
com.apple.driver.AppleMultiFunctionManager 1
com.apple.driver.AppleBluetoothDebugService 1
com.apple.driver.AppleBCMWLANCore 1.0.0
com.apple.iokit.IO80211Family 1200.13.1
com.apple.driver.IOImageLoader 1.0.0
com.apple.driver.AppleOLYHAL 1
com.apple.driver.corecapture 1.0.4
com.apple.driver.AppleMCA2-T600x 920.1
com.apple.driver.AppleEmbeddedAudioLibs 420.3
com.apple.driver.AppleFirmwareUpdateKext 1
com.apple.driver.AppleH13CameraInterface 9.302.0
com.apple.driver.AppleGPIOICController 1.0.2
com.apple.driver.AppleFireStormErrorHandler 1
com.apple.driver.AppleEmbeddedPCIE 1
com.apple.driver.usb.AppleUSBHostPacketFilter 1.0
com.apple.iokit.IOTimeSyncFamily 1320.8
com.apple.driver.DiskImages 493.0.0
com.apple.iokit.IOGraphicsFamily 598
com.apple.iokit.IOBluetoothFamily 9.0.0
com.apple.driver.AppleUIO 1
com.apple.driver.AppleSSE 1.0
com.apple.driver.AppleSEPKeyStore 2
com.apple.driver.AppleUSBTDM 556
com.apple.iokit.IOUSBMassStorageDriver 250.60.2
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOUSBHostFamily 1.2
com.apple.driver.AppleUSBHostMergeProperties 1.2
com.apple.driver.usb.AppleUSBCommon 1.0
com.apple.driver.AppleSMC 3.1.9
com.apple.driver.RTBuddy 1.0.0
com.apple.driver.AppleEmbeddedTempSensor 1.0.0
com.apple.driver.AppleARMPMU 1.0
com.apple.iokit.IOAccessoryManager 1.0.0
com.apple.driver.AppleOnboardSerial 1.0
com.apple.iokit.IOSerialFamily 11
com.apple.iokit.IOSCSIBlockCommandsDevice 500
com.apple.iokit.IOSCSIArchitectureModelFamily 500
com.apple.driver.AppleRSMChannel 1
com.apple.iokit.IORSMFamily 1
com.apple.driver.AppleLockdownMode 1
com.apple.driver.AppleIPAppender 1.0
com.apple.iokit.IOSkywalkFamily 1.0
com.apple.driver.mDNSOffloadUserClient 1.0.1b8
com.apple.iokit.IONetworkingFamily 3.4
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleEffaceableStorage 1.0
com.apple.driver.AppleCredentialManager 1.0
com.apple.driver.AppleSEPManager 1.0.1
com.apple.driver.AppleA7IOP 1.0.2
com.apple.driver.IOSlaveProcessor 1
com.apple.driver.AppleBiometricSensor 2
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.driver.AppleANELoadBalancer 8.203.4
com.apple.driver.AppleH11ANEInterface 8.203.4
com.apple.driver.IODARTFamily 1
com.apple.AUC 1.0
com.apple.iokit.IOSurface 372.3.4
com.apple.iokit.IOAVFamily 1.0.0
com.apple.iokit.IOHDCPFamily 1.0.0
com.apple.iokit.IOCECFamily 1
com.apple.iokit.IOAudio2Family 1.0
com.apple.driver.AppleIISController 420.1
com.apple.driver.AppleAudioClockLibs 420.3
com.apple.driver.FairPlayIOKit 72.10.0
com.apple.driver.AppleARMPlatform 1.0.2
com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0
com.apple.iokit.IOReportFamily 47
com.apple.security.quarantine 4
com.apple.security.sandbox 300.0
com.apple.iokit.IOStorageFamily 2.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.AppleMobileFileIntegrity 1.0.5
com.apple.iokit.CoreAnalyticsFamily 1
com.apple.security.AppleImage4 7.0.0
com.apple.kext.CoreTrust 1
com.apple.iokit.IOCryptoAcceleratorFamily 1.0.1
com.apple.kec.pthread 1
com.apple.kec.Libm 1
com.apple.kec.Compression 1.0
com.apple.kec.corecrypto 14.0

** Stackshot Succeeded ** Bytes Traced 875170 (Uncompressed 2265296) **

6 Likes

Without having the original crash report to verify its output against, it’s impossible to know if it is right or wrong, but based on what you shared, it’s pretty impressive.

1 Like

Corrected. I’ve added the original.

1 Like

Thanks.

Yes, the AI seems to have done a good analysis.

Now, why macOS should panic itself because a device refused to sleep is another issue. Personally, I think it should instead have aborted the sleep request and presented an error instead. But without knowing the code involved, I can’t say if that would be possible.

5 Likes

That’s pretty interesting. I’m not sure how much I’d use it but nice to know it’s there. I’d be curious if other LLMs could do a similar thing.

A followup question to Claude: I asked, “Is this anything to worry about?”

I’ll be direct about the risk assessment:

This type of kernel panic, while disruptive, isn’t typically a major concern unless it’s recurring. Here’s why:

  1. It’s a sleep/wake transition issue, not a data corruption or hardware failure event
  2. The panic occurred in Apple’s own PCIe controller driver, suggesting it’s likely a software issue rather than hardware failure
  3. The memory and swap states were healthy at the time of the crash

However, there are a few things worth noting:

  • If this is happening repeatedly, it could indicate a systemic issue that needs addressing
  • The presence of development/beta version numbers in the OS (24.2.0) might mean you’re running pre-release software
  • These types of issues can sometimes be resolved through SMC (System Management Controller) resets or OS updates

From a data integrity perspective, modern macOS systems are quite resilient to these kinds of crashes. The file system (APFS) is designed to handle sudden shutdowns without data loss, though obviously any unsaved work in open applications would be lost.

Would you like me to outline some troubleshooting steps if this is a recurring issue?

1 Like

Good stuff. I would just add that before submitting any logs or system info to a generative AI engine/LLM, be sure to remove any personal or confidential info. AI’s use input to generate results and archive and analyze it to iterate the models.

2 Likes

Good point. I asked Claude.

Is there any personal or confidential information in this crash report? If so, what is it? How would I recognize it in future reports?

Yes, this crash report contains some identifiers that could be considered sensitive, particularly for security researchers or in an enterprise context. Here are the key ones:

  1. System Identifiers:
  • Boot session UUID: FC45836B-2686-48D2-8319-5AB92DE5FEEE
  • Kernel UUID: D2971138-437D-3F77-88F9-85281167A321
  • Kernel Cache UUID: 81286C61255A1EA3300E378B10C574ED
  1. Hardware/System-Specific Information:
  • Memory layout and zone mapping details
  • Exact kernel version and build numbers
  • Complete list of loaded kernel extensions (kexts)
  • Memory addresses for various system components

In future crash reports, you can identify potentially sensitive information by looking for:

  • Any UUID strings (format: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX)
  • Memory addresses (hexadecimal values starting with 0x)
  • Exact version numbers and build strings
  • System timestamps
  • Complete kext lists

While none of this information alone is particularly dangerous, combined it could provide a detailed fingerprint of your system that might be useful for targeting exploits. If sharing crash reports publicly, you might want to redact UUIDs and specific version numbers, though in this case the information isn’t particularly sensitive since it appears to be from a beta/development build.

3 Likes

The next question becomes, if you remove all that specific information from the panic log, what can the agent still extract from it? Is a meaningful interpretation still possible once the log had been sufficiently redacted?

It’s removed only in the public version, such as on this forum.

Well, @Halfsmoke’s point was about removing specific information before submitting to the agent, not just posting. Along the lines of Apple’s on-device processing mantra, I’m curious how much such an off-device agent can still do if the aforementioned specifics are withheld.

1 Like

It is a kernel panic. The kernel addresses will be different on the restart from what was in the report, due to Address Space Layout Randomization (ASLR). So that’s not risky information to disclose.

2 Likes

I gave Claude the whole, unredacted version and only then redacted anything. But if @mschmitt is correct, that the kernel addresses will be different upon restart, there’s probably no point in redacting them anyway.

I have used ChatGPT to analyse panic and system logs. It helped me with a crash on my 2015 MacBook Pro during sleep. I have Sequoia 15.2 on it via Open Core Legacy Patcher. It gave me several suggestions to solve the problem, and after testing 6 different things it is now resolved with this change:
pmset -a standby 0

1 Like

I just installed the “Windows” MacOS app on my spouse’s computer (We just need a way to log into windoze machines via RDP protocol. ) and now the machine is basically rebooting all by itself! Will try this on the crash report. Guess we could use another Mac RDP client. Never seen an M2 pro MBP crash like that - pretty impressive!

Very interesting. Maybe Apple could take a leaf out of Claude’s book and use its Apple Intelligence to post comprehensible error reports to its customers, most of whom don’t have post graduate qualifications in advanced computing.

3 Likes

Excellent idea.

Makes me wonder if Claude could have made sense of why no iWork apps could be opened on a brand new MacBook Pro M4 Pro today no matter how thoroughly they were uninstalled and reinstalled – seems every file related to Apple on the computer had to be erased if one should be able to run the programs. I am sure Apple support would only recommend to start over with a new user account as if all users are new to Apple … (some indirectly related databases are likely the problem).

1 Like