M1 Panic: acc_cifl2c_cmd_ncwr
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M1 MacBook Pro 13" 16GB constantly reboots with the same panic error: **acc_cifl2c_cmd_ncwr**
I've spent some time figuring out who is causing this problem.
It happens only if M1 MacBook Pro connects to wired ethernet only (via thunderbolt obviously) with disabled Wi-Fi.
So:
- Wi-Fi only = no issues
- Wired ethernet with disabled Wi-Fi = Panic: acc_cifl2c_cmd_ncwr
Tried:
- Multiple/different thunderbolt hubs = panic
- Multiple/different thunderbolt cables = panic
- The latest macOS installed from the scratch = panic
- Safe Mode = panic
I tried to contact AppleCare support but they wasted my 4 hours with no results.
The issue has been present since day one we got the M1 processor...
The only solution is to use Wi-Fi only which is a shame for PRO users.
**CRASHLOG:**
panic(cpu 5 caller 0xfffffe00308887c8): "LLC Bus error from cpu1: FAR=0x740192d200 LLC_ERR_STS/ADR/INF=0x11000ffc00000080/0x2280080600c02060/0x5 addr=0x600c02060 cmd=0x14(acc_cifl2c_cmd_ncwr)"
Debugger message: panic
Memory ID: 0x6
OS release type: User
OS version: 20F71
Kernel version: Darwin Kernel Version 20.5.0: Sat May 8 05:10:31 PDT 2021; root:xnu-7195.121.3~9/RELEASE_ARM64_T8101
Fileset Kernelcache UUID: FB10CC0AB8BAC020BC47A50D64476F11
Kernel UUID: 07259C53-9EF7-32FF-821D-8F28A5985DFA
iBoot version: iBoot-6723.120.36
secure boot?: YES
Paniclog version: 13
KernelCache slide: 0x0000000027cc8000
KernelCache base: 0xfffffe002eccc000
Kernel slide: 0x0000000028810000
Kernel text base: 0xfffffe002f814000
Kernel text exec base: 0xfffffe002f8e0000
mach_absolute_time: 0x621e4df97f4
Epoch Time: sec usec
Boot : 0x60d0e4f6 0x0002e5a8
Sleep : 0x60d52e97 0x000872f0
Wake : 0x60d52e97 0x0009b77a
Calendar: 0x60d52ec9 0x0003ebb1
CORE 0 recently retired instr at 0xfffffe002fa526f4
CORE 1 recently retired instr at 0xfffffe002fa526f4
CORE 2 recently retired instr at 0xfffffe002fa526f4
CORE 3 recently retired instr at 0xfffffe002fa526f4
CORE 4 recently retired instr at 0xfffffe002fa526f8
CORE 5 recently retired instr at 0xfffffe002fa51240
CORE 6 recently retired instr at 0xfffffe002fa526f8
CORE 7 recently retired instr at 0xfffffe002fa526f8
Panicked task 0xfffffe1666b44688: 616209 pages, 570 threads: pid 0: kernel_task
Panicked thread: 0xfffffe166cec9fe0, backtrace: 0xfffffe40202ab090, tid: 2753969
lr: 0xfffffe002f92ebe4 fp: 0xfffffe40202ab100
lr: 0xfffffe002f92e9c8 fp: 0xfffffe40202ab170
lr: 0xfffffe002fa57a70 fp: 0xfffffe40202ab190
lr: 0xfffffe002fa492b8 fp: 0xfffffe40202ab240
lr: 0xfffffe002f8e77e8 fp: 0xfffffe40202ab250
lr: 0xfffffe002f92e658 fp: 0xfffffe40202ab5e0
lr: 0xfffffe002f92e658 fp: 0xfffffe40202ab650
lr: 0xfffffe00300e03e8 fp: 0xfffffe40202ab670
lr: 0xfffffe00308887c8 fp: 0xfffffe40202ab730
lr: 0xfffffe0030888888 fp: 0xfffffe40202ab7d0
lr: 0xfffffe0030888330 fp: 0xfffffe40202ab8a0
lr: 0xfffffe0030888264 fp: 0xfffffe40202ab8b0
lr: 0xfffffe0030249470 fp: 0xfffffe40202ab8d0
lr: 0xfffffe002fa4c098 fp: 0xfffffe40202ab910
lr: 0xfffffe002f8e7950 fp: 0xfffffe40202ab920
lr: 0xfffffe0031ce1b34 fp: 0xfffffe40202abcc0
lr: 0xfffffe0031cec2b4 fp: 0xfffffe40202abd00
lr: 0xfffffe0031ca7c50 fp: 0xfffffe40202abd30
lr: 0xfffffe003000a2a0 fp: 0xfffffe40202abda0
lr: 0xfffffe0031ca7cec fp: 0xfffffe40202abdf0
lr: 0xfffffe0031caec5c fp: 0xfffffe40202abe20
lr: 0xfffffe002ff267c4 fp: 0xfffffe40202abf00
lr: 0xfffffe002f8f0c38 fp: 0x0000000000000000
Kernel Extensions in backtrace:
com.apple.driver.AppleARMPlatform(1.0.2)[F784412E-33CC-3859-B0CB-D0A62C9E26CB]@0xfffffe003023c000->0xfffffe003028bfff
dependency: com.apple.iokit.IOReportFamily(47)[A0C25545-295B-3538-AA20-D7ED2DFACC78]@0xfffffe0031d50000->0xfffffe0031d53fff
dependency: com.apple.iokit.IOSlowAdaptiveClockingFamily(1.0.0)[15B94521-A6E6-3D71-A842-BBDF5DFCF49B]@0xfffffe0031df8000->0xfffffe0031dfbfff
dependency: com.apple.iokit.IOStorageFamily(2.1)[8A98ACCC-D34C-36E3-93F6-D8A2F39C2A51]@0xfffffe0031dfc000->0xfffffe0031e1bfff
com.apple.iokit.IONetworkingFamily(3.4)[375417A5-E54E-3435-962C-A5A8B63A70A1]@0xfffffe0031c98000->0xfffffe0031cbbfff
com.apple.driver.AppleFireStormErrorHandler(1.0)[5AD02522-CA32-38AF-B8DF-42A103488990]@0xfffffe0030888000->0xfffffe003088bfff
dependency: com.apple.driver.AppleARMPlatform(1.0.2)[F784412E-33CC-3859-B0CB-D0A62C9E26CB]@0xfffffe003023c000->0xfffffe003028bfff
dependency: com.apple.iokit.IOReportFamily(47)[A0C25545-295B-3538-AA20-D7ED2DFACC78]@0xfffffe0031d50000->0xfffffe0031d53fff
com.apple.driver.AppleEthernetAquantiaAqtion(1.0.64)[C368FFA0-F8A8-31C8-85F4-FD14104735CB]@0xfffffe0031cdc000->0xfffffe0031d03fff
dependency: com.apple.driver.AppleARMPlatform(1.0.2)[F784412E-33CC-3859-B0CB-D0A62C9E26CB]@0xfffffe003023c000->0xfffffe003028bfff
dependency: com.apple.driver.AppleEmbeddedPCIE(1)[71FF1161-40A1-3590-82FA-EC25E4BBA66B]@0xfffffe0030798000->0xfffffe00307abfff
dependency: com.apple.driver.mDNSOffloadUserClient(1.0.1b8)[F542F73D-2FC5-3BF3-A3D9-EE8865072FAA]@0xfffffe0031d30000->0xfffffe0031d33fff
dependency: com.apple.iokit.IONetworkingFamily(3.4)[375417A5-E54E-3435-962C-A5A8B63A70A1]@0xfffffe0031c98000->0xfffffe0031cbbfff
dependency: com.apple.iokit.IOPCIFamily(2.9)[B0CD5169-B0A8-3682-BB05-ADBC1D65D831]@0xfffffe0031d34000->0xfffffe0031d4ffff
dependency: com.apple.iokit.IOTimeSyncFamily(985.2)[AF463BB6-BFD9-376F-8E25-C9915B70E88F]@0xfffffe0031f64000->0xfffffe0031f83fff
last started kext at 5983132342186: com.apple.filesystems.msdosfs 1.10 (addr 0xfffffe002f7c8000, size 16384)
last stopped kext at 5991444649954: com.apple.filesystems.msdosfs 1.10 (addr 0xfffffe002f7c8000, size 16384)
loaded kexts:
com.apple.filesystems.smbfs 3.6
com.apple.filesystems.autofs 3.0
com.apple.fileutil 20.036.15
com.apple.driver.AppleTopCaseHIDEventDriver 4050.1
com.apple.iokit.IOBluetoothSerialManager 8.0.5d7
com.apple.driver.AppleHIDALSService 1
com.apple.iokit.SCSITaskUserClient 436.121.1
com.apple.driver.AppleIntelI210Ethernet 2.3.1
com.apple.driver.AppleBiometricServices 1
com.apple.driver.AppleALSColorSensor 1.0.0d1
com.apple.driver.AppleAOPVoiceTrigger 11.5
com.apple.driver.BCMWLANFirmware4378.Hashstore 1
com.apple.driver.CoreKDL 1
com.apple.driver.SEPHibernation 1
com.apple.driver.AppleUSBDeviceNCM 5.0.0
com.apple.driver.AppleThunderboltIP 4.0.3
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.AppleSmartBatteryManager 161.0.0
com.apple.filesystems.apfs 1677.120.9
com.apple.driver.AppleFileSystemDriver 3.0.1
com.apple.nke.l2tp 1.9
com.apple.filesystems.tmpfs 1
com.apple.driver.ApplePMP 1
com.apple.driver.ApplePMPFirmware 1
com.apple.driver.AppleSmartIO2 1
com.apple.IOTextEncryptionFamily 1.0.0
com.apple.AppleEmbeddedSimpleSPINORFlasher 1
com.apple.filesystems.hfs.kext 556.100.11
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.AppleDPDisplayTCON 1
com.apple.driver.AppleCS42L83Audio 442.26
com.apple.driver.AppleTAS5770LAmp 442.26
com.apple.driver.AppleSPMIPMU 1.0.1
com.apple.AGXG13G 173.28.1
com.apple.driver.AppleSummitLCD 1.0.0
com.apple.driver.AppleT8020SOCTuner 1
com.apple.driver.AppleT8103CLPCv3 1
com.apple.driver.AppleAVD 381
com.apple.driver.AppleAVE2 401.73.3
com.apple.driver.AppleJPEGDriver 4.6.0
com.apple.driver.AppleMobileDispH13G-DCP 140.0
com.apple.driver.usb.AppleUSBHostT8103 1
com.apple.driver.AudioDMAController-T8103 1.60.5
com.apple.driver.AppleS5L8960XNCO 1
com.apple.driver.AppleT8103PMGR 1
com.apple.driver.AppleS8000AES 1
com.apple.driver.AppleS8000DWI 1.0.0d1
com.apple.driver.AppleS5L8960XWatchDogTimer 1
com.apple.driver.AppleInterruptController 1.0.0d1
com.apple.driver.AppleBluetoothModule 1
com.apple.driver.AppleSamsungSerial 1.0.0d1
com.apple.driver.AppleBCMWLANBusInterfacePCIe 1
com.apple.driver.AppleT8020DART 1
com.apple.driver.AppleSynopsysMIPIDSI 1.0.0
com.apple.driver.AppleS5L8920XPWM 1.0.0d1
com.apple.driver.AppleS5L8940XI2C 1.0.0d2
com.apple.driver.AppleSPIMC 1
com.apple.driver.AppleT8101 1
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 1
com.apple.AppleSystemPolicy 2.0.0
com.apple.nke.applicationfirewall 311
com.apple.kec.InvalidateHmac 1
com.apple.driver.usb.cdc.ecm 5.0.0
com.apple.driver.usb.cdc.ncm 5.0.0
com.apple.driver.usb.cdc.acm 5.0.0
com.apple.driver.usb.serial 6.0.0
com.apple.kext.triggers 1.0
com.apple.driver.AppleHIDKeyboard 224
com.apple.driver.AppleActuatorDriver 4440.3
com.apple.driver.AppleMultitouchDriver 4440.3
com.apple.driver.AppleHSBluetoothDriver 4050.1
com.apple.driver.IOBluetoothHIDDriver 8.0.5d7
com.apple.iokit.IOAVBFamily 940.4
com.apple.plugin.IOgPTPPlugin 985.2
com.apple.driver.AppleEthernetAquantiaAqtion 1.0.64
com.apple.driver.usb.IOUSBHostHIDDevice 1.2
com.apple.driver.usb.cdc 5.0.0
com.apple.driver.AppleUSBAudio 405.39
com.apple.iokit.IOAudioFamily 300.6.1
com.apple.vecLib.kext 1.2.0
com.apple.iokit.IOEthernetAVBController 1.1.0
com.apple.driver.usb.AppleUSBXHCIPCI 1.2
com.apple.driver.AppleMesaSEPDriver 100.99
com.apple.iokit.IOBiometricFamily 1
com.apple.driver.AppleThunderboltPCIUpAdapter 4.1.1
com.apple.driver.AppleThunderboltDPOutAdapter 8.1.4
com.apple.driver.AppleAOPAudio 16.2
com.apple.driver.AppleSEPHDCPManager 1.0.1
com.apple.driver.AppleTrustedAccessory 1
com.apple.iokit.AppleSEPGenericTransfer 1
com.apple.driver.usb.networking 5.0.0
com.apple.driver.AppleThunderboltUSBDownAdapter 1.0.4
com.apple.driver.AppleThunderboltPCIDownAdapter 4.1.1
com.apple.driver.AppleThunderboltDPInAdapter 8.1.4
com.apple.driver.AppleThunderboltDPAdapterFamily 8.1.4
com.apple.driver.DiskImages.KernelBacked 493.0.0
com.apple.driver.IOBluetoothHostControllerPCIeTransport 8.0.5d7
com.apple.iokit.IOBluetoothHostControllerTransport 8.0.5d7
com.apple.driver.AppleConvergedIPCOLYBTControl 1
com.apple.driver.AppleConvergedPCI 1
com.apple.driver.AppleBluetoothDebug 1
com.apple.driver.AppleBTM 1.0.1
com.apple.driver.AppleXsanScheme 3
com.apple.driver.AppleDCPDPTXProxy 1.0.0
com.apple.driver.DCPDPFamilyProxy 1
com.apple.nke.ppp 1.9
com.apple.iokit.IONVMeFamily 2.1.0
com.apple.driver.AppleDiagnosticDataAccessReadOnly 1.0.0
com.apple.driver.AppleNANDConfigAccess 1.0.0
com.apple.driver.AppleSPU 1
com.apple.driver.AppleBSDKextStarter 3
com.apple.AGXFirmwareKextG13GRTBuddy 173.28.1
com.apple.AGXFirmwareKextRTBuddy64 173.28.1
com.apple.filesystems.hfs.encodings.kext 1
com.apple.driver.AppleCSEmbeddedAudio 442.26
com.apple.driver.AppleHIDTransportSPI 4400.35
com.apple.driver.AppleHIDTransport 4400.35
com.apple.driver.AppleInputDeviceSupport 4400.35
com.apple.driver.AppleHPM 3.4.4
com.apple.driver.AppleEmbeddedAudio 442.26
com.apple.iokit.AppleARMIISAudio 80.34.1
com.apple.driver.AppleStockholmControl 1.0.0
com.apple.driver.AppleDialogPMU 1.0.1
com.apple.driver.AppleH13CameraInterface 3.55.0
com.apple.driver.AppleH10PearlCameraInterface 16.15.1
com.apple.iokit.IOGPUFamily 21.11
com.apple.driver.AppleH11ANEInterface 4.75.0
com.apple.driver.ApplePassthroughPPM 3.0
com.apple.driver.DCPAVFamilyProxy 1
com.apple.iokit.IOMobileGraphicsFamily-DCP 343.0.0
com.apple.driver.AppleDCP 1
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com.apple.driver.AppleUSBXDCIARM 1.0
com.apple.driver.AppleUSBXDCI 1.0
com.apple.iokit.IOUSBDeviceFamily 2.0.0
com.apple.driver.usb.AppleUSBXHCIARM 1
com.apple.driver.usb.AppleUSBXHCI 1.2
com.apple.driver.AppleEmbeddedUSBHost 1
com.apple.driver.usb.AppleUSBHub 1.2
com.apple.driver.usb.AppleUSBHostCompositeDevice 1.2
com.apple.driver.AppleT8103TypeCPhy 1
com.apple.driver.AppleSART 1
com.apple.driver.ApplePMGR 1
com.apple.driver.watchdog 1
com.apple.driver.usb.AppleUSBHostPacketFilter 1.0
com.apple.driver.AppleDisplayCrossbar 1.0.0
com.apple.iokit.IODisplayPortFamily 1.0.0
com.apple.driver.AppleTypeCPhy 1
com.apple.driver.AppleThunderboltNHI 7.2.8
com.apple.driver.AppleT8103PCIeC 1
com.apple.iokit.IOThunderboltFamily 9.3.2
com.apple.driver.ApplePIODMA 1
com.apple.driver.AppleT8103PCIe 1
com.apple.driver.AppleBluetoothDebugService 1
com.apple.driver.AppleBCMWLANCore 1.0.0
com.apple.iokit.IO80211FamilyV2 1200.12.2b1
com.apple.driver.IOImageLoader 1.0.0
com.apple.driver.AppleMobileDispH13G-DFR 140.0
com.apple.iokit.IOMobileGraphicsFamily 343.0.0
com.apple.driver.AppleMCA2-T8103 540.10
com.apple.driver.AppleGPIOICController 1.0.2
com.apple.driver.AppleFireStormErrorHandler 1
com.apple.driver.AppleMultiFunctionManager 1
com.apple.driver.corecapture 1.0.4
com.apple.driver.AppleEmbeddedPCIE 1
com.apple.driver.AppleMobileApNonce 1
com.apple.iokit.IOTimeSyncFamily 985.2
com.apple.driver.DiskImages 493.0.0
com.apple.iokit.IOGraphicsFamily 585.1
com.apple.iokit.IOBluetoothFamily 8.0.5d7
com.apple.iokit.IOBluetoothPacketLogger 8.0.5d7
com.apple.driver.FairPlayIOKit 68.7.1
com.apple.iokit.CoreAnalyticsFamily 1
com.apple.driver.AppleSSE 1.0
com.apple.driver.AppleSEPKeyStore 2
com.apple.driver.AppleUSBTDM 511.120.2
com.apple.iokit.IOUSBMassStorageDriver 184.121.1
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOSCSIBlockCommandsDevice 436.121.1
com.apple.iokit.IOSCSIArchitectureModelFamily 436.121.1
com.apple.driver.AppleIPAppender 1.0
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleEffaceableStorage 1.0
com.apple.driver.AppleCredentialManager 1.0
com.apple.driver.KernelRelayHost 1
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.IOSkywalkFamily 1
com.apple.driver.mDNSOffloadUserClient 1.0.1b8
com.apple.iokit.IONetworkingFamily 3.4
com.apple.iokit.IOSerialFamily 11
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.AUC 1.0
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.AppleEmbeddedAudioLibs 1.17
com.apple.driver.AppleFirmwareUpdateKext 1
com.apple.driver.AppleM2ScalerCSCDriver 265.0.0
com.apple.iokit.IOSurface 290.8.1
com.apple.driver.IODARTFamily 1
com.apple.security.quarantine 4
com.apple.security.sandbox 300.0
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.AppleMobileFileIntegrity 1.0.5
com.apple.kext.CoreTrust 1
com.apple.security.AppleImage4 3.0.0
com.apple.iokit.IOCryptoAcceleratorFamily 1.0.1
com.apple.driver.AppleARMPlatform 1.0.2
com.apple.iokit.IOStorageFamily 2.1
com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0
com.apple.iokit.IOReportFamily 47
com.apple.kec.pthread 1
com.apple.kec.corecrypto 11.1
com.apple.kec.Libm 1
** Stackshot Succeeded ** Bytes Traced 860592 (Uncompressed 2317552) **
Asked by uiuxgo.com
(21 rep)
Jun 21, 2021, 06:45 PM
Last activity: Jul 5, 2025, 03:07 AM
Last activity: Jul 5, 2025, 03:07 AM