iMac 2015 27" Kernel Panic


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Can someone help me?

iMac late 2015 27"
Processor: 3.2GHz Quad-Core i5
Memory: 16GB 1867 MHz DDR3
Graphics: AMD Radeon R9 M380 2GB

I installed new a SSD & 2 new RAM sticks.

Is it the CPU I need to change out?

panic(cpu 3 caller 0xffffff80125f06a9): "Double fault at 0xffffff80126034fa, registers:\n" "CR0: 0x000000008001003b, CR2: 0x00000000bd4dbee8, CR3: 0x00000000165ae000, CR4: 0x00000000003626e0\n" "RAX: 0x0000000000000000, RBX: 0x0000000000000002, RCX: 0x0000000000000001, RDX: 0x0000000000000000\n" "RSP: 0x00000000bd4dbef8, RBP: 0xffffffb0bd4dbf20, RSI: 0xffffff80133dce80, RDI: 0xffffff8013250760\n" "R8: 0x0000000000000001, R9: 0x0000000000000004, R10: 0x0000000000000000, R11: 0x0000000000000001\n" "R12: 0x0000000000000010, R13: 0x0000000000012070, R14: 0x0000000000000000, R15: 0x00000000ffffffff\n" "RFL: 0x0000000000010002, RIP: 0xffffff80126034fa, CS: 0x0000000000000008, SS: 0x0000000000000010\n" "Error code: 0x0000000000000000\n"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-7195.50.7/osfmk/i386/trap_native.c:168
Backtrace (CPU 3), Frame : Return Address
0xffffff8012357ad0 : 0xffffff80124bc66d
0xffffff8012357b20 : 0xffffff80125ff073
0xffffff8012357b60 : 0xffffff80125ef6aa
0xffffff8012357bb0 : 0xffffff8012461a2f
0xffffff8012357bd0 : 0xffffff80124bbf0d
0xffffff8012357cf0 : 0xffffff80124bc1f8
0xffffff8012357d60 : 0xffffff8012cbee1a
0xffffff8012357dd0 : 0xffffff80125f06a9
0xffffff8012357ec0 : 0xffffff8012cbf828
0xffffff8012357ed0 : 0xffffff80124622af
0xffffffb0bd4dbf20 : 0xffffff80125f1a32
0xffffffb0bd4dbf40 : 0xffffff80124e3db9
0xffffffb0bd4dbf80 : 0xffffff80124e3f88
0xffffffb0bd4dbfa0 : 0xffffff801246113e

Process name corresponding to current thread: kernel_task

Mac OS version:
20B29

Kernel version:
Darwin Kernel Version 20.1.0: Sat Oct 31 00:07:11 PDT 2020; root:xnu-7195.50.7~2/RELEASE_X86_64
Kernel UUID: 84C6DC45-6B02-335F-9439-5D2A9BC385A4
KernelCache slide: 0x0000000012200000
KernelCache base: 0xffffff8012400000
Kernel slide: 0x0000000012210000
Kernel text base: 0xffffff8012410000
__HIB text base: 0xffffff8012300000
System model name: iMac17,1 (Mac-65CE76090165799A)
System shutdown begun: NO
Panic diags file available: YES (0x0)
Hibernation exit count: 0

System uptime in nanoseconds: 2488848000598
Last Sleep: absolute base_tsc base_nano
Uptime : 0x000002437ae6a985
Sleep : 0x00000234c67f7b1b 0x000000051b3b14a1 0x0000000000000000
Wake : 0x00000234ce1a78ed 0x000000006789b2ca 0x00000234cd1436fb
last started kext at 2426206972473: >!UAudio 401.4 (addr 0xffffff7fb1b61000, size 307200)
last stopped kext at 1902097272898: >usb.!UUserHCI 1 (addr 0xffffff7fb1fef000, size 98304)
loaded kexts:
@filesystems.smbfs 3.4.1
>!ATopCaseHIDEventDriver 4000.27
>AudioAUUC 1.70
@filesystems.ntfs 3.14.3
>!APlatformEnabler 2.7.0d0
>AGPM 119
>X86PlatformShim 1.0.0
@fileutil 20.036.15
@filesystems.autofs 3.0
@filesystems.exfat 1.4
>!AUpstreamUserClient 3.6.8
@kext.AMDFramebuffer 4.0.0
>!AMikeyHIDDriver 131
@kext.AMDRadeonX4000 4.0.0
>!AMikeyDriver 283.15
@kext.AMDRadeonServiceManager 4.0.0
>!A!IPCHPMC 2.0.1
>!AGraphicsDevicePolicy 6.1.27
@kext.AMD8000!C 4.0.0
>!A!ISKLGraphics 16.0.0
>!AHDA 283.15
>!ASMCLMU 212
@AGDCPluginDisplayMetrics 6.1.27
>eficheck 1
>pmtelemetry 1
>LuaHardwareAccess 1.0.16
|IOUserEthernet 1.0.1
|IO!BSerialManager 8.0.1f5
@Dont_Steal_Mac_OS_X 7.0.0
>!AHV 1
>!ADiskImages2 1
>!A!ISKLGraphicsFramebuffer 16.0.0
>!AThunderboltIP 4.0.3
|Broadcom!B20703USBTransport 8.0.1f5
>!A!ISlowAdaptiveClocking 4.0.0
>!AMCCSControl 1.14
@filesystems.tmpfs 1
@filesystems.hfs.kext 556.41.1
@BootCache 40
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
@filesystems.apfs 1677.50.1
|!ABCM5701Ethernet 11.0.0
>!ASDXC 1.9.0
>AirPort.BrcmNIC 1400.1.1
>!AAHCIPort 346
@private.KextAudit 1.0
>!AACPIButtons 6.1
>!ARTC 2.0
>!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
>!AHIDKeyboard 222
>!AMultitouchDriver 4400.28
>!AInputDeviceSupport 4400.35
>!AHS!BDriver 4000.27
>IO!BHIDDriver 8.0.1f5
@kext.triggers 1.0
@kext.AMDRadeonX4050HWLibs 1.0
@kext.AMDRadeonX4000HWServices 4.0.0
>!AGraphicsControl 6.1.27
@kext.AMDSupport 4.0.0
>DspFuncLib 283.15
@kext.OSvKernDSPLib 529
|IOSerial!F 11
|IOAVB!F 900.12
@plugin.IOgPTPPlugin 900.11
|IOEthernetAVB!C 1.1.0
>X86PlatformPlugin 1.0.0
>IOPlatformPlugin!F 6.0.0d8
|IOAccelerator!F2 439.35.4
>!AThunderboltEDMSink 5.0.3
|Broadcom!BHost!CUSBTransport 8.0.1f5
|IO!BHost!CUSBTransport 8.0.1f5
|IO!BHost!CTransport 8.0.1f5
>!AHDA!C 283.15
|IOHDA!F 283.15
|IOAudio!F 300.6.1
@vecLib.kext 1.2.0
@!AGPUWrangler 6.1.27
@!AGraphicsDeviceControl 6.1.27
|IOSlowAdaptiveClocking!F 1.0.0
>!ASMBusPCI 1.0.14d1
|IONDRVSupport 585
|IOGraphics!F 585
>!ASMBus!C 1.0.18d1
>usb.networking 5.0.0
>usb.!UHostCompositeDevice 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
|IONVMe!F 2.1.0
|IO80211!F 1200.12.2b1
|IOSkywalk!F 1
>mDNSOffloadUserClient 1.0.1b8
>corecapture 1.0.4
|IOAHCI!F 294
|IOUSB!F 900.4.2
>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 8.0.1f5
|IOReport!F 47
|IO!BPacketLogger 8.0.1f5
$quarantine 4
$sandbox 300.0
@kext.!AMatch 1.0.0d1
|CoreAnalytics!F 1
>!ASSE 1.0
>!AKeyStore 2
>!UTDM 511.40.9
|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
 
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It looks like that is coming from using Big Sur. Did this happen with the prior Mac OS you were using?

Also, a beta version of the next Big Sur release, v11.1.0, was released on Tuesday:


And from what I have read, V11.1.0 could arrive by next week. Not sure if it will resolve your issue or not, but thought I'd let you know.
 
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It looks like that is coming from using Big Sur. Did this happen with the prior Mac OS you were using?

Also, a beta version of the next Big Sur release, v11.1.0, was released on Tuesday:


And from what I have read, V11.1.0 could arrive by next week. Not sure if it will resolve your issue or not, but thought I'd let you know.
Hey Marty, thanks for the heads up. I'll keep my eye out on the next version of Big Sur. I was getting the same error on Catalina. I will say that now i have updated to Big Sur, it doesn't happen as frequent.
 
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I'm suspect that its the 7200RPM hard drive. I replaced the flash ssd drive that is mounted to the logic board but not the larger hard drive in the iMac. I formatted it & unmounted it through disk utility. Gonna test it out tonight to see if it fixes.
 

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