panic(cpu 1 caller 0xffffff8013613af7): "UPSB(iMac18,3): thunderbolt power on failed 0xffffffff\n" @IOPCIBridge.cpp:1541
Panicked task 0xffffff85423ab6a0: 216 threads: pid 0: kernel_task
Backtrace (CPU 1), panicked thread: 0xffffff85569adb70, Frame : Return Address
0xffffffd049563980 : 0xffffff8010a9c00d 
0xffffffd0495639d0 : 0xffffff8010bf5d85 
0xffffffd049563a10 : 0xffffff8010be5763 
0xffffffd049563a60 : 0xffffff8010a3ba60 
0xffffffd049563a80 : 0xffffff8010a9c3dd 
0xffffffd049563ba0 : 0xffffff8010a9bb96 
0xffffffd049563c00 : 0xffffff8011318649 
0xffffffd049563c70 : 0xffffff8013613af7 
0xffffffd049563c90 : 0xffffff80135f2be2 
0xffffffd049563d20 : 0xffffff80135f30ee 
0xffffffd049563d50 : 0xffffff80135f1313 
0xffffffd049563dc0 : 0xffffff80135fabc9 
0xffffffd049563de0 : 0xffffff801123fa47 
0xffffffd049563e50 : 0xffffff801123f7ca 
0xffffffd049563e70 : 0xffffff8010aecc85 
0xffffffd049563ee0 : 0xffffff8010aedcd2 
0xffffffd049563fa0 : 0xffffff8010a3b18e 
      Kernel Extensions in backtrace:
         com.apple.iokit.IOPCIFamily(2.9)[5E1B0BE0-4B73-35F5-9126-EB05FBB8BAF5]@0xffffff80135ee000->0xffffff8013618fff

Process name corresponding to current thread (0xffffff85569adb70): kernel_task

Mac OS version:
21A559

Kernel version:
Darwin Kernel Version 21.1.0: Wed Oct 13 17:33:23 PDT 2021; root:xnu-8019.41.5~1/RELEASE_X86_64
Kernel UUID: 19BD4E1B-0268-3EE0-BC66-91F035BC9429
KernelCache slide: 0x0000000010800000
KernelCache base:  0xffffff8010a00000
Kernel slide:      0x0000000010810000
Kernel text base:  0xffffff8010a10000
__HIB  text base: 0xffffff8010900000
System model name: iMac18,3 (Mac-BE088AF8C5EB4FA2)
System shutdown begun: NO
Panic diags file available: YES (0x0)
Hibernation exit count: 0

System uptime in nanoseconds: 523287044008
Last Sleep:           absolute           base_tsc          base_nano
  Uptime  : 0x00000079d656a1d4
  Sleep   : 0x00000072579546ea 0x0000000d3ac091ca 0x0000000000000000
  Wake    : 0x000000725d011a3e 0x000000009e0a3b20 0x000000725bd93c2d
Zone info:
Foreign   : 0xffffff80285eb000 - 0xffffff80285f8000
Native    : 0xffffff8034ab3000 - 0xffffffa034ab3000
Readonly  : 0 - 0
Metadata  : 0xffffffd54c24e000 - 0xffffffd56c313000
Bitmaps   : 0xffffffd56c313000 - 0xffffffd56f313000
last started kext at 491596228684: @UVCService	1 (addr 0xffffff7fa9111000, size 4096)
last stopped kext at 115078322714: >IOPlatformPluginLegacy	1.0.0 (addr 0xffffff7fa8fc5000, size 36864)
loaded kexts:
@UVCService	1
>!ATopCaseHIDEventDriver	5010.1
>AudioAUUC	1.70
>X86PlatformShim	1.0.0
>!APlatformEnabler	2.7.0d0
>AGPM	125
@filesystems.autofs	3.0
@fileutil	20.036.15
>!AUpstreamUserClient	3.6.8
@kext.AMDFramebuffer	4.0.7
@kext.AMDRadeonX4000	4.0.7
@kext.AMDRadeonServiceManager	4.0.7
>!AHDA	283.15
>!AGraphicsDevicePolicy	6.4.9
>!A!IPCHPMC	2.0.1
@kext.AMD9500!C	4.0.7
>eficheck	1
@AGDCPluginDisplayMetrics	6.4.9
>!A!IKBLGraphics	18.0.2
>pmtelemetry	1
|IOUserEthernet	1.0.1
>usb.!UUserHCI	1
>!AHV	1
>!ADiskImages2	126.40.1
>!AThunderboltIP	4.0.3
>!ASMCLMU	212
>!AMCCSControl	1.14
>!AGFXHDA	100.1.434
>!A!ISlowAdaptiveClocking	4.0.0
>!A!IKBLGraphicsFramebuffer	18.0.2
>!AFileSystemDriver	3.0.1
@filesystems.tmpfs	1
@filesystems.lifs	1
@filesystems.hfs.kext	582.40.4
@BootCache	40
@!AFSCompression.!AFSCompressionTypeZlib	1.0.0
@!AFSCompression.!AFSCompressionTypeDataless	1.0.0d1
@filesystems.apfs	1933.41.2
>!ASDXC	3.1.1
>AirPort.BrcmNIC	1400.1.1
|!ABCM5701Ethernet	11.0.0
>!AAHCIPort	351
@private.KextAudit	1.0
>!AACPIButtons	6.1
>!ARTC	2.0.1
>!ASMBIOS	2.1
>!AACPIEC	6.1
>!AAPIC	1.7
@!ASystemPolicy	2.0.0
@nke.applicationfirewall	402
|IOKitRegistryCompatibility	1
|EndpointSecurity	1
@Dont_Steal_Mac_OS_X	7.0.0
@kec.!AEncryptedArchive	1
>!UAudio	412.8
>!AAudioClockLibs	100.9.1
>driverkit.serial	6.0.0
|IOSerial!F	11
>!AHIDKeyboard	228
>!AMultitouchDriver	5400.25
>!AInputDeviceSupport	5400.30
>!AHS!BDriver	5010.1
>IO!BHIDDriver	9.0.0
@kext.triggers	1.0
@kext.AMDRadeonX4200HWLibs	1.0
>DspFuncLib	283.15
@kext.OSvKernDSPLib	529
@kext.AMDRadeonX4000HWServices	4.0.7
>!AGraphicsControl	6.4.9
@kext.AMDSupport	4.0.7
|IO!BSerialManager	9.0.0
|IO!BPacketLogger	9.0.0
|IO!BHost!CUSBTransport	9.0.0
|IO!BHost!CUARTTransport	9.0.0
|IO!BHost!CTransport	9.0.0
>IO!BHost!CPCIeTransport	9.0.0
|IOAVB!F	1010.2
@plugin.IOgPTPPlugin	1000.11
|IOEthernetAVB!C	1.1.0
|CSR!BHost!CUSBTransport	9.0.0
|Broadcom!BHost!CUSBTransport	9.0.0
|Broadcom!B20703USBTransport	9.0.0
>!AIPAppender	1.0
>!AThunderboltDPOutAdapter	8.5.0
>!ASMBus!C	1.0.18d1
>!AHDA!C	283.15
|IOHDA!F	283.15
|IONDRVSupport	593
|IOAudio!F	300.10
@vecLib.kext	1.2.0
>!ASMBusPCI	1.0.14d1
>X86PlatformPlugin	1.0.0
>IOPlatformPlugin!F	6.0.0d8
@!AGPUWrangler	6.4.9
|IOSlowAdaptiveClocking!F	1.0.0
|IOAccelerator!F2	462.4
@!AGraphicsDeviceControl	6.4.9
|IOGraphics!F	593
>usb.IOUSBHostHIDDevice	1.2
>usb.cdc	5.0.0
>usb.networking	5.0.0
>usb.!UHostCompositeDevice	1.2
>!AThunderboltDPInAdapter	8.5.0
>!AThunderboltDPAdapter!F	8.5.0
>!AThunderboltPCIDownAdapter	4.1.1
>!AHPM	3.4.4
>!A!ILpssI2C!C	3.0.60
>!A!ILpssDmac	3.0.60
>!ABSDKextStarter	3
|IOSurface	302.9
@filesystems.hfs.encodings.kext	1
>!AXsanScheme	3
|IOAHCIBlock!S	333
>!AThunderboltNHI	7.2.8
|IOThunderbolt!F	9.3.2
|IO80211!FLegacy	1200.12.2b1
|IOSkywalk!F	1.0
>corecapture	1.0.4
>mDNSOffloadUserClient	1.0.1b8
|IONVMe!F	2.1.0
>!A!ILpssI2C	3.0.60
>usb.!UHostPacketFilter	1.0
|IOUSB!F	900.4.2
>!A!ILpssGspi	3.0.60
|IOAHCI!F	295
>usb.!UXHCIPCI	1.2
>usb.!UXHCI	1.2
>!AEFINVRAM	2.1
>!AEFIRuntime	2.1
|IOSMBus!F	1.1
|IOHID!F	2.0.0
|IOTimeSync!F	1000.11
|IONetworking!F	3.4
>DiskImages	493.0.0
|IO!B!F	9.0.0
|IOReport!F	47
$quarantine	4
$sandbox	300.0
@kext.!AMatch	1.0.0d1
|CoreAnalytics!F	1
>!ASSE	1.0
>!AKeyStore	2
>!UTDM	532.40.7
|IOUSBMass!SDriver	209.40.6
|IOSCSIBlockCommandsDevice	452.30.4
|IO!S!F	2.1
|IOSCSIArchitectureModel!F	452.30.4
>!AMobileFileIntegrity	1.0.5
$!AImage4	4.1.0
@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.Libm	1
@kec.corecrypto	12.0