big sur watchdog timeout: no checkins from watchdogd
https://apple.stackexchange.com/questions/372183/catalina-crashing-at-shutdown-watchdog-timeout-no-checkins-from-watchdogd
https://discussions.apple.com/thread/251234777
panic(cpu 2 caller 0xffffff800436e9fe): watchdog timeout: no checkins from watchdogd in 302 seconds (13851 totalcheckins since monitoring last enabled), shutdown in progress
Backtrace (CPU 2), Frame : Return Address
0xffffffa136743c00 : 0xffffff80010b9aed
0xffffffa136743c50 : 0xffffff80011fc6e3
0xffffffa136743c90 : 0xffffff80011ecd1a
0xffffffa136743ce0 : 0xffffff800105ea2f
0xffffffa136743d00 : 0xffffff80010b938d
0xffffffa136743e20 : 0xffffff80010b9678
0xffffffa136743e90 : 0xffffff80018be434
0xffffffa136743f00 : 0xffffff800436e9fe
0xffffffa136743f20 : 0xffffff800436e304
0xffffffa136743f50 : 0xffffff80026a39dc
0xffffffa136743fa0 : 0xffffff800105e13e
Kernel Extensions in backtrace:
com.apple.driver.watchdog(1.0)[7AE04EA4-D026-39A0-B2D5-5C9E4EE72967]@0xffffff800436d000->0xffffff800436efff
com.apple.driver.AppleSMC(3.1.9)[D674490B-26E7-312B-9E8E-03250124CCC6]@0xffffff8002694000->0xffffff80026acfff
dependency: com.apple.driver.watchdog(1)[7AE04EA4-D026-39A0-B2D5-5C9E4EE72967]@0xffffff800436d000->0xffffff800436efff
dependency: com.apple.iokit.IOACPIFamily(1.4)[C8F0E837-965A-3EB4-B8F6-4C2142046028]@0xffffff80034d7000->0xffffff80034d8fff
dependency: com.apple.iokit.IOPCIFamily(2.9)[D0F1BFB8-C28E-3E70-891B-73B783189394]@0xffffff8003a2c000->0xffffff8003a53fff
Process name corresponding to current thread: kernel_task
Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev chunklist-security-epoch=0 -chunklist-no-rev2-dev
Mac OS version:
20C69
Kernel version:
Darwin Kernel Version 20.2.0: Wed Dec 2 20:39:59 PST 2020; root:xnu-7195.60.75~1/RELEASE_X86_64
Kernel UUID: 82E2050C-5936-3D24-AD3B-EC4EC5C09E11
KernelCache slide: 0x0000000000e00000
KernelCache base: 0xffffff8001000000
Kernel slide: 0x0000000000e10000
Kernel text base: 0xffffff8001010000
__HIB text base: 0xffffff8000f00000
System model name: MacBookPro16,4 (Mac-A61BADE1FDAD7B05)
System shutdown begun: YES
Hibernation exit count: 0
System uptime in nanoseconds: 174786899512906
Last Sleep: absolute base_tsc base_nano
Uptime : 0x00009ef7bf0e9640
Sleep : 0x000020b90d66e995 0x000077de7f8f22b2 0x000020ac3bf485c1
Wake : 0x000020b93ed33174 0x00007d54c5f94b84 0x000020b91f4d9567
last started kext at 35993541594451: |SCSITaskUserClient 436.40.6 (addr 0xffffff8003aca000, size 20480)
last stopped kext at 13952834060325: >!AXsanScheme 3 (addr 0xffffff8002866000, size 12288)
loaded kexts:
|SCSITaskUserClient 436.40.6
>usb.!UUserHCI 1
>AudioAUUC 1.70
>usb.realtek8153patcher 5.0.0
>usb.!UHostBillboardDevice 1.0
@filesystems.smbfs 3.4.1
>!ATopCaseHIDEventDriver 4020.6
>!AHIDALSService 1
>!APlatformEnabler 2.7.0d0
>AGPM 119
>X86PlatformShim 1.0.0
@filesystems.autofs 3.0
@fileutil 20.036.15
@kext.AMDRadeonX6000 4.0.2
>!AUpstreamUserClient 3.6.8
@filesystems.ntfs 3.14.3
@kext.AMDRadeonServiceManager 4.0.2
>!AGraphicsDevicePolicy 6.2.2
>!A!IKBLGraphics 16.0.1
@AGDCPluginDisplayMetrics 6.2.2
>!AGFXHDA 100.1.431
>pmtelemetry 1
>LuaHardwareAccess 1.0.16
|IOUserEthernet 1.0.1
|IO!BSerialManager 8.0.2f9
>AGDCBacklightControl 6.2.2
>!AMCCSControl 1.14
>!A!ICFLGraphicsFramebuffer 16.0.1
>!AThunderboltIP 4.0.3
>!ABridgeAudio!C 100.2
>!AMuxControl2 6.2.2
@Dont_Steal_Mac_OS_X 7.0.0
>!AHV 1
>!ADiskImages2 1
>BridgeAudioCommunication 100.2
>!AAVEBridge 6.1
>!A!IPCHPMC 2.0.1
>!A!ISlowAdaptiveClocking 4.0.0
>BCMWLANFirmware4378.Hashstore 1
>BCMWLANFirmware4377.Hashstore 1
>BCMWLANFirmware4364.Hashstore 1
>BCMWLANFirmware4355.Hashstore 1
>!ABCMWLANBusInterfacePCIeMac 1
@filesystems.apfs 1677.60.23
@filesystems.tmpfs 1
@filesystems.hfs.kext 556.60.1
@BootCache 40
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
@private.KextAudit 1.0
>!ASmartBatteryManager 161.0.0
>!AACPIButtons 6.1
>!ASMBIOS 2.1
>!AACPIEC 6.1
>!AAPIC 1.7
@!ASystemPolicy 2.0.0
@nke.applicationfirewall 310
|IOKitRegistryCompatibility 1
|EndpointSecurity 1
>usb.IOUSBHostHIDDevice 1.2
>!UAudio 401.4
>usb.cdc.acm 5.0.0
>usb.serial 6.0.0
>usb.cdc.ecm 5.0.0
>!UMergeNub 900.4.2
>!AXsanScheme 3
>usb.!UHub 1.2
>!AActuatorDriver 4400.28
>!AHIDKeyboard 222
>!AMultitouchDriver 4400.28
>!AInputDeviceSupport 4400.35
>!AHS!BDriver 4020.6
>IO!BHIDDriver 8.0.2f9
@kext.triggers 1.0
@kext.AMDRadeonX6300HWLibs 1.0
@kext.AMDRadeonX6000Framebuffer 4.0.2
@kext.AMDSupport 4.0.2
@kext.AMDRadeonX6000HWServices 4.0.2
|IO!BHost!CUARTTransport 8.0.2f9
|IO!BHost!CTransport 8.0.2f9
|IOAVB!F 900.12
>!ABacklightExpert 1.1.0
|IONDRVSupport 585
>!ASMBus!C 1.0.18d1
|IOAccelerator!F2 439.52
|IOAudio!F 300.6.1
@vecLib.kext 1.2.0
>!AGraphicsControl 6.2.2
>!A!ILpssUARTv1 3.0.60
>!A!ILpssUARTCommon 3.0.60
>!AOnboardSerial 1.0
>X86PlatformPlugin 1.0.0
>IOPlatformPlugin!F 6.0.0d8
@!AGPUWrangler 6.2.2
@!AGraphicsDeviceControl 6.2.2
|IOGraphics!F 585
|IOSlowAdaptiveClocking!F 1.0.0
@plugin.IOgPTPPlugin 900.11
|IOEthernetAVB!C 1.1.0
>usb.cdc.ncm 5.0.0
>usb.cdc 5.0.0
>usb.networking 5.0.0
>usb.!UHostCompositeDevice 1.2
>!ABCMWLANCoreMac 1.0.0
|IOSerial!F 11
|IO80211!FV2 1200.12.2b1
>IOImageLoader 1.0.0
>corecapture 1.0.4
>!AThunderboltPCIDownAdapter 4.1.1
>!AThunderboltDPInAdapter 8.1.4
>!AThunderboltDPAdapter!F 8.1.4
>!AHPM 3.4.4
>!A!ILpssI2C!C 3.0.60
>!A!ILpssI2C 3.0.60
>!A!ILpssDmac 3.0.60
>!ABSDKextStarter 3
|IOSurface 289.3
|IOSkywalk!F 1
>mDNSOffloadUserClient 1.0.1b8
@filesystems.hfs.encodings.kext 1
>usb.!UVHCIBCE 1.2
>usb.!UVHCICommonBCE 1.0
>usb.!UVHCI 1.2
>usb.!UVHCICommon 1.0
>!AEffaceableNOR 1.0
|IOBufferCopy!C 1.1.0
|IOBufferCopyEngine!F 1
|IONVMe!F 2.1.0
>!AThunderboltNHI 7.2.8
|IOThunderbolt!F 9.3.2
|IOUSB!F 900.4.2
>usb.!UXHCIPCI 1.2
>usb.!UXHCI 1.2
>!AEFINVRAM 2.1
>!AEFIRuntime 2.1
>!ASMCRTC 1.0
|IOSMBus!F 1.1
|IOHID!F 2.0.0
$!AImage4 3.0.0
|IOTimeSync!F 900.11
|IONetworking!F 3.4
>DiskImages 493.0.0
|IO!B!F 8.0.2f9
|IOReport!F 47
|IO!BPacketLogger 8.0.2f9
$quarantine 4
$sandbox 300.0
@kext.!AMatch 1.0.0d1
|CoreAnalytics!F 1
>!ASSE 1.0
>!AKeyStore 2
>!UTDM 511.60.2
|IOUSBMass!SDriver 184.40.6
|IOSCSIBlockCommandsDevice 436.40.6
|IO!S!F 2.1
|IOSCSIArchitectureModel!F 436.40.6
>!AMobileFileIntegrity 1.0.5
@kext.CoreTrust 1
>!AFDEKeyStore 28.30
>!AEffaceable!S 1.0
>!ACredentialManager 1.0
>KernelRelayHost 1
|IOUSBHost!F 1.2
>!UHostMergeProperties 1.2
>usb.!UCommon 1.0
>!ABusPower!C 1.0
>!ASEPManager 1.0.1
>IOSlaveProcessor 1
>!AACPIPlatform 6.1
>!ASMC 3.1.9
|IOPCI!F 2.9
|IOACPI!F 1.4
>watchdog 1
@kec.pthread 1
@kec.corecrypto 11.1
@kec.Libm 1