i have one week the same issue : panic(cpu 2 caller 0xffffff800ed68a25): userspace watchdog timeout: no successful checkins from com.apple.logd in 120 seconds service returned not alive with context : unresponsive dispatch queue(s): com.apple.firehose.io-wl  service: com.apple.logd, total successful checkins since wake (210 seconds ago): 10, last successful checkin: 120 seconds ago service: com.apple.WindowServer, total successful checkins since wake (210 seconds ago): 12, last successful checkin: 100 seconds ago Backtrace (CPU 2), Frame : Return Address 0xffffffb0b3533670 : 0xffffff800bab38fd  0xffffffb0b35336c0 : 0xffffff800bbf64e3  0xffffffb0b3533700 : 0xffffff800bbe6b1a  0xffffffb0b3533750 : 0xffffff800ba58a2f  0xffffffb0b3533770 : 0xffffff800bab319d  0xffffffb0b3533890 : 0xffffff800bab3488  0xffffffb0b3533900 : 0xffffff800c2b7cf4  0xffffffb0b3533970 : 0xffffff800ed68a25  0xffffffb0b3533980 : 0xffffff800ed68678  0xffffffb0b35339a0 : 0xffffff800c23ef8e  0xffffffb0b35339f0 : 0xffffff800ed67ab4  0xffffffb0b3533b20 : 0xffffff800c24915b  0xffffffb0b3533c80 : 0xffffff800bba1b81  0xffffffb0b3533d90 : 0xffffff800bab8ef7  0xffffffb0b3533e00 : 0xffffff800ba8f705  0xffffffb0b3533e60 : 0xffffff800baa6e12  0xffffffb0b3533ef0 : 0xffffff800bbcacc3  0xffffffb0b3533fa0 : 0xffffff800ba59216        Kernel Extensions in backtrace:          com.apple.driver.watchdog(1.0)[C1A64FD7-AD16-37E0-8FA1-A78A8E91D9FF]@0xffffff800ed67000->0xffffff800ed68fff Process name corresponding to current thread: watchdogd Mac OS version: 20C5048k Kernel version: Darwin Kernel Version 20.2.0: Tue Nov 10 21:14:14 PST 2020; root:xnu-7195.60.70.111.1~1/RELEASEX8664 Kernel UUID: 1C1D9321-73E9-3B05-AD5D-926E3B0E53AB KernelCache slide: 0x000000000b800000 KernelCache base:  0xffffff800ba00000 Kernel slide:      0x000000000b810000 Kernel text base:  0xffffff800ba10000 _HIB  text base: 0xffffff800b900000 System model name: iMac15,1 (Mac-FA842E06C61E91C5) System shutdown begun: NO Panic diags file available: YES (0x0) Hibernation exit count: 0 System uptime in nanoseconds: 10136556899103 Last Sleep:           absolute           basetsc          basenano   Uptime  : 0x0000093819df8eb6   Sleep   : 0x00000904e38c0c8c 0x000000006209f2bc 0x00000521ab86d5d9   Wake    : 0x00000904eabd54eb 0x000000006223083c 0x00000904e9c6b8c3 last started kext at 5642570235310: >!UAudio 401.4 (addr 0xffffff7fabf0f000, size 307200) last stopped kext at 1944225107613: >usb.!UUserHCI 1 (addr 0xffffff7fac39d000, size 98304) loaded kexts: com.parallels.kext.netbridge 16.1.0 48950 com.parallels.kext.usbconnect 16.1.0 48950 com.parallels.kext.hypervisor 16.1.0 48950 com.parallels.kext.vnic 16.1.0 48950 com.paragon-software.filesystems.ntfs 106.5.15 com.intel.driver.EnergyDriver 2.0 @filesystems.afpfs 11.3 @nke.asptcp 8.2 usb.!UUserHCI 1 @filesystems.smbfs 3.4.1 !A!BMultitouch 99 AudioAUUC 1.70 @fileutil 20.036.15 !APlatformEnabler 2.7.0d0 AGPM 119 X86PlatformShim 1.0.0 @filesystems.autofs 3.0 !AUpstreamUserClient 3.6.8 @kext.AMDFramebuffer 4.0.2 !AMikeyHIDDriver 131 @kext.AMDRadeonX4000 4.0.2 @kext.AMDRadeonServiceManager 4.0.2 !AHDA 283.15 !AGraphicsDevicePolicy 6.2.2 @AGDCPluginDisplayMetrics 6.2.2 pmtelemetry 1 LuaHardwareAccess 1.0.16 |IOUserEthernet 1.0.1 |IO!BSerialManager 8.0.2f2 !A!IHD5000Graphics 16.0.1 @DontStealMacOSX 7.0.0 !AHV 1 !AThunderboltIP 4.0.3 !AMikeyDriver 283.15 eficheck 1 !ADiskImages2 1 !ALPC 3.1 !ASMCLMU 212 !A!IFramebufferAzul 16.0.1 @kext.AMD9000!C 4.0.2 !AMCCSControl 1.14 !A!ISlowAdaptiveClocking 4.0.0 !ATopCaseHIDEventDriver 4020.6 !UTopCaseDriver 4020.6 @filesystems.tmpfs 1 @filesystems.hfs.kext 556.60.1 @BootCache 40 @!AFSCompression.!AFSCompressionTypeZlib 1.0.0 @!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1 @filesystems.apfs 1677.60.22 !ASDXC 1.9.0 |!ABCM5701Ethernet 11.0.0 AirPort.BrcmNIC 1400.1.1 @private.KextAudit 1.0 !AAHCIPort 346 !ARTC 2.0 !AACPIButtons 6.1 !AHPET 1.8 !ASMBIOS 2.1 !AACPIEC 6.1 !AAPIC 1.7 @!ASystemPolicy 2.0.0 @nke.applicationfirewall 310 |IOKitRegistryCompatibility 1 |EndpointSecurity 1 !UAudio 401.4 usb.cdc 5.0.0 $SecureRemotePassword 1.0 @plugin.IOAVBDiscoveryPlugin 900.12 @kext.triggers 1.0 @kext.AMDRadeonX4070HWLibs 1.0 @kext.AMDRadeonX4000HWServices 4.0.2 DspFuncLib 283.15 @kext.OSvKernDSPLib 529 !AGraphicsControl 6.2.2 |IOSerial!F 11 |IOAVB!F 900.12 !AThunderboltEDMSink 5.0.3 |IONDRVSupport 585 !AHDA!C 283.15 |IOHDA!F 283.15 |IOAudio!F 300.6.1 @vecLib.kext 1.2.0 !ASMBusPCI 1.0.14d1 |IOAccelerator!F2 439.52 @plugin.IOgPTPPlugin 900.11 |IOEthernetAVB!C 1.1.0 @kext.AMDSupport 4.0.2 !ASMBus!C 1.0.18d1 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 |Broadcom!BHost!CUSBTransport 8.0.2f2 |IO!BHost!CUSBTransport 8.0.2f2 |IO!BHost!CTransport 8.0.2f2 !AHS!BDriver 4020.6 IO!BHIDDriver 8.0.2f2 usb.IOUSBHostHIDDevice 1.2 !AMultitouchDriver 4400.28 !AInputDeviceSupport 4400.35 !AHIDKeyboard 222 usb.networking 5.0.0 usb.!UHostCompositeDevice 1.2 usb.!UHub 1.2 !AThunderboltDPOutAdapter 8.1.4 !AThunderboltDPInAdapter 8.1.4 !AThunderboltDPAdapter!F 8.1.4 !AThunderboltPCIDownAdapter 4.1.1 !ABSDKextStarter 3 |IOSurface 289.3 @filesystems.hfs.encodings.kext 1 |IOAHCIBlock!S 332 !AThunderboltNHI 7.2.8 |IOThunderbolt!F 9.3.2 |IOUSB!F 900.4.2 |IO80211!F 1200.12.2b1 |IOSkywalk!F 1 mDNSOffloadUserClient 1.0.1b8 corecapture 1.0.4 |IOAHCI!F 294 usb.!UXHCIPCI 1.2 usb.!UXHCI 1.2 !AEFINVRAM 2.1 !AEFIRuntime 2.1 |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 8.0.2f2 |IOReport!F 47 |IO!BPacketLogger 8.0.2f2 $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 1.0 @kec.Libm 1