panic(cpu 2 caller 0xffffff8018deba25): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds
service: com.apple.logd, total successful checkins since load (2800 seconds ago): 281, last successful checkin: 0 seconds ago
service: com.apple.WindowServer, total successful checkins since load (2770 seconds ago): 265, last successful checkin: 120 seconds ago
service: com.apple.remoted, total successful checkins since load (2800 seconds ago): 279, last successful checkin: 0 seconds ago

Backtrace (CPU 2), Frame : Return Address
0xffffffa072103670 : 0xffffff8015a8e02d 
0xffffffa0721036c0 : 0xffffff8015bd48e3 
0xffffffa072103700 : 0xffffff8015bc4eda 
0xffffffa072103750 : 0xffffff8015a32a2f 
0xffffffa072103770 : 0xffffff8015a8d84d 
0xffffffa072103890 : 0xffffff8015a8db43 
0xffffffa072103900 : 0xffffff801629d6f4 
0xffffffa072103970 : 0xffffff8018deba25 
0xffffffa072103980 : 0xffffff8018deb660 
0xffffffa0721039a0 : 0xffffff801621eede 
0xffffffa0721039f0 : 0xffffff8018deaa34 
0xffffffa072103b20 : 0xffffff801622911b 
0xffffffa072103c80 : 0xffffff8015b80401 
0xffffffa072103d90 : 0xffffff8015a936ad 
0xffffffa072103e00 : 0xffffff8015a69c85 
0xffffffa072103e60 : 0xffffff8015a812a2 
0xffffffa072103ef0 : 0xffffff8015ba91fd 
0xffffffa072103fa0 : 0xffffff8015a33216 
      Kernel Extensions in backtrace:
         com.apple.driver.watchdog(1.0)[57B278ED-0B7C-3544-9CFE-53963BB1DAF3]@0xffffff8018de9000->0xffffff8018debfff

Process name corresponding to current thread: watchdogd
Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev chunklist-security-epoch=0 -chunklist-no-rev2-dev

Mac OS version:
20E241

Kernel version:
Darwin Kernel Version 20.4.0: Thu Apr 22 21:46:47 PDT 2021; root:xnu-7195.101.2~1/RELEASE_X86_64
Kernel UUID: 068F99A3-1DB3-31C0-87D5-09942F122BB6
KernelCache slide: 0x0000000015800000
KernelCache base:  0xffffff8015a00000
Kernel slide:      0x0000000015810000
Kernel text base:  0xffffff8015a10000
__HIB  text base: 0xffffff8015900000
System model name: iMac20,1 (Mac-CFF7D910A743CAAF)
System shutdown begun: NO
Hibernation exit count: 0

System uptime in nanoseconds: 2808484703441
Last Sleep:           absolute           base_tsc          base_nano
  Uptime  : 0x0000028de6bbb1c0
  Sleep   : 0x0000000000000000 0x0000000000000000 0x0000000000000000
  Wake    : 0x0000000000000000 0x00000010cca07028 0x0000000000000000
last started kext at 118548122084: @filesystems.smbfs	3.5 (addr 0xffffff7fafaa6000, size 487424)
last stopped kext at 2758865982593: >!AFIVRDriver	4.1.0 (addr 0xffffff7fad7b7000, size 8192)
loaded kexts:
org.virtualbox.kext.VBoxNetAdp	6.1.18
org.virtualbox.kext.VBoxNetFlt	6.1.18
org.virtualbox.kext.VBoxUSB	6.1.18
org.virtualbox.kext.VBoxDrv	6.1.18
@filesystems.smbfs	3.5
@filesystems.msdosfs	1.10
>!ATopCaseHIDEventDriver	4040.11
>AudioAUUC	1.70
>AGPM	122
>!APlatformEnabler	2.7.0d0
>X86PlatformShim	1.0.0
@filesystems.autofs	3.0
@fileutil	20.036.15
>!AHIDALSService	1
>!AUpstreamUserClient	3.6.8
@kext.AMDRadeonX6000	4.0.4
@kext.AMDRadeonServiceManager	4.0.4
>!AGraphicsDevicePolicy	6.2.9
@AGDCPluginDisplayMetrics	6.2.9
>pmtelemetry	1
|IOUserEthernet	1.0.1
>usb.!UUserHCI	1
|IO!BSerialManager	8.0.4d18
@Dont_Steal_Mac_OS_X	7.0.0
>!AHV	1
>!AGFXHDA	100.1.433
>!A!IKBLGraphics	16.0.2
>!ADiskImages2	1
>!A!ISlowAdaptiveClocking	4.0.0
>!A!IPCHPMC	2.0.1
>!ABridgeAudio!C	140.4
>!AThunderboltIP	4.0.3
>!AMCCSControl	1.14
>!A!ICFLGraphicsFramebuffer	16.0.2
>BridgeAudioCommunication	140.4
>!AAVEBridge	6.1
|SCSITaskUserClient	436.100.4
>usb.!UHostBillboardDevice	1.0
>!UCardReader	511.101.1
>BCMWLANFirmware4378.Hashstore	1
>BCMWLANFirmware4377.Hashstore	1
>BCMWLANFirmware4364.Hashstore	1
>BCMWLANFirmware4355.Hashstore	1
>!AFileSystemDriver	3.0.1
@filesystems.tmpfs	1
@filesystems.hfs.kext	556.100.11
@BootCache	40
@!AFSCompression.!AFSCompressionTypeZlib	1.0.0
@!AFSCompression.!AFSCompressionTypeDataless	1.0.0d1
|!ABCM5701Ethernet	11.0.0
>!ABCMWLANBusInterfacePCIeMac	1
@filesystems.apfs	1677.100.114
@private.KextAudit	1.0
>!AACPIButtons	6.1
>!ASMBIOS	2.1
>!AACPIEC	6.1
>!AAPIC	1.7
@!ASystemPolicy	2.0.0
@nke.applicationfirewall	311
|IOKitRegistryCompatibility	1
|EndpointSecurity	1
>!AHIDKeyboard	224
>!AMultitouchDriver	4440.3
>!AInputDeviceSupport	4400.35
>!AHS!BDriver	4040.11
>IO!BHIDDriver	8.0.4d18
|IOUSBUserClient	900.4.2
@kext.triggers	1.0
@kext.AMDRadeonX6200HWLibs	1.0
@kext.AMDRadeonX6000HWServices	4.0.4
|IOAVB!F	940.4
|IOEthernetAVB!C	1.1.0
>!ASMBusPCI	1.0.14d1
@!AGPUWrangler	6.2.9
|IOSlowAdaptiveClocking!F	1.0.0
@plugin.IOgPTPPlugin	980.4
|IOAudio!F	300.6.1
@vecLib.kext	1.2.0
>!AThunderboltDPOutAdapter	8.1.4
>!AGraphicsControl	6.2.9
>!ASMBus!C	1.0.18d1
|IO!BHost!CUARTTransport	8.0.4d18
|IO!BHost!CTransport	8.0.4d18
|IONDRVSupport	585.1
>!A!ILpssUARTv1	3.0.60
>!A!ILpssUARTCommon	3.0.60
>!AOnboardSerial	1.0
>usb.IOUSBHostHIDDevice	1.2
@kext.AMDRadeonX6000Framebuffer	4.0.4
@kext.AMDSupport	4.0.4
>X86PlatformPlugin	1.0.0
>IOPlatformPlugin!F	6.0.0d8
|IOAccelerator!F2	442.9
@!AGraphicsDeviceControl	6.2.9
|IOGraphics!F	585.1
>usb.cdc.ecm	5.0.0
>usb.cdc.ncm	5.0.0
>usb.cdc	5.0.0
>usb.networking	5.0.0
>usb.!UHostCompositeDevice	1.2
>!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	290.7
@filesystems.hfs.encodings.kext	1
>!AThunderboltNHI	7.2.8
|IOThunderbolt!F	9.3.2
>!ABCMWLANCoreMac	1.0.0
|IOSerial!F	11
|IO80211!FV2	1200.12.2b1
|IOSkywalk!F	1
>mDNSOffloadUserClient	1.0.1b8
>IOImageLoader	1.0.0
>corecapture	1.0.4
>!AXsanScheme	3
>usb.!UHostPacketFilter	1.0
|IOUSB!F	900.4.2
>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
>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	980.4
|IONetworking!F	3.4
>DiskImages	493.0.0
|IO!B!F	8.0.4d18
|IOReport!F	47
|IO!BPacketLogger	8.0.4d18
$quarantine	4
$sandbox	300.0
@kext.!AMatch	1.0.0d1
|CoreAnalytics!F	1
>!ASSE	1.0
>!AKeyStore	2
>!UTDM	511.101.1
|IOUSBMass!SDriver	184.101.1
|IOSCSIBlockCommandsDevice	436.100.4
|IO!S!F	2.1
|IOSCSIArchitectureModel!F	436.100.4
>!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