Late 2014 iMac keeps crashing

[diabloooo0]

The 2014 iMac has 32gb DDR3 RAM in 4 slots and it has been working very well over the past years until recently it started to crash starting a few months ago. I also noticed that it mostly crash during the time when its in sleep mode, it rarely crash when I am using it. When this issue first happened, I cleaned the ram slot (lots of dust) and it seems improved it a little at the beginning, but then it starts to crash again. Yesterday I finally decided to do a clean big sur reinstall from a USB drive, and left it as usual for a whole night, it has been good, when I was just thinking a reinstall fixed the problem, it crashed again! and this time again it happened when I left it in sleep mode. It seems something wrong with its sleep model? Any help is much appreciated!

See the problem report below:

panic(cpu 3 caller 0xffffff80069cc751): "Invalid queue element linkage for 0xffffff8039404a80: next 0xffffff86dfa673c0 next->prev 0xffffff8039404a80 prev 0xffffff86d2c5b630 prev->next 0xffffff8239404a80"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-7195.81.3/osfmk/kern/queue.h:247
Backtrace (CPU 3), Frame : Return Address
0xffffffa0a2df3740 : 0xffffff80068bab4d
0xffffffa0a2df3790 : 0xffffff80069fd7e3
0xffffffa0a2df37d0 : 0xffffff80069ede1a
0xffffffa0a2df3820 : 0xffffff800685fa2f
0xffffffa0a2df3840 : 0xffffff80068ba3ed
0xffffffa0a2df3960 : 0xffffff80068ba6d8
0xffffffa0a2df39d0 : 0xffffff80070bef9a
0xffffffa0a2df3a40 : 0xffffff80069cc751
0xffffffa0a2df3b70 : 0xffffff800694b64b
0xffffffa0a2df3bf0 : 0xffffff800694a09c
0xffffffa0a2df3c70 : 0xffffff800694d8f1
0xffffffa0a2df3f00 : 0xffffff80069ee430
0xffffffa0a2df3fa0 : 0xffffff800685f91f

Process name corresponding to current thread: Google Chrome Helper (Renderer)

Mac OS version:
20D74

Kernel version:
Darwin Kernel Version 20.3.0: Thu Jan 21 00:07:06 PST 2021; root:xnu-7195.81.3~1/RELEASE_X86_64
Kernel UUID: C86236B2-4976-3542-80CA-74A6B8B4BA03
KernelCache slide: 0x0000000006600000
KernelCache base: 0xffffff8006800000
Kernel slide: 0x0000000006610000
Kernel text base: 0xffffff8006810000
__HIB text base: 0xffffff8006700000
System model name: iMac15,1 (Mac-42FD25EABCABB274)
System shutdown begun: NO
Panic diags file available: YES (0x0)
Hibernation exit count: 0

System uptime in nanoseconds: 9307928591762
Last Sleep: absolute base_tsc base_nano
Uptime : 0x000008772bc70009
Sleep : 0x00000877008a8bbf 0x0000000044ff9831 0x00000581bead90a1
Wake : 0x0000087707a30631 0x0000000044985358 0x0000087706f13277
last started kext at 5997498375045: >!UAudio 401.4 (addr 0xffffff7fa6d10000, size 307200)
loaded kexts:
@filesystems.exfat 1.4
>AudioAUUC 1.70
>X86PlatformShim 1.0.0
>AGPM 119
>!APlatformEnabler 2.7.0d0
@fileutil 20.036.15
@filesystems.autofs 3.0
>!AUpstreamUserClient 3.6.8
@kext.AMDFramebuffer 4.0.2
>!AMikeyHIDDriver 131
>!AHDAHardwareConfigDriver 283.15
>!AHDA 283.15
@kext.AMDRadeonX4000 4.0.2
>!AMikeyDriver 283.15
@kext.AMDRadeonServiceManager 4.0.2
>AGDCBacklightControl 6.2.2
>!AGraphicsDevicePolicy 6.2.2
>eficheck 1
>!ASMCLMU 212
@AGDCPluginDisplayMetrics 6.2.2
>ACPI_SMC_PlatformPlugin 1.0.0
>pmtelemetry 1
>LuaHardwareAccess 1.0.16
|IOUserEthernet 1.0.1
>usb.!UUserHCI 1
|IO!BSerialManager 8.0.3d9
@Dont_Steal_Mac_OS_X 7.0.0
>!AHV 1
>!ADiskImages2 1
>!A!IHD5000Graphics 16.0.1
>!ALPC 3.1
>!A!ISlowAdaptiveClocking 4.0.0
>!ABacklight 180.3
@kext.AMD7000!C 4.0.2
>!AThunderboltIP 4.0.3
>!A!IFramebufferAzul 16.0.1
>!AFIVRDriver 4.1.0
>!AMCCSControl 1.14
|IO!BUSBDFU 8.0.3d9
|SCSITaskUserClient 436.40.6
>!AFileSystemDriver 3.0.1
@filesystems.tmpfs 1
@filesystems.hfs.kext 556.60.1
@BootCache 40
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
@filesystems.apfs 1677.81.1
@private.KextAudit 1.0
>!ASDXC 1.9.0
|!ABCM5701Ethernet 11.0.0
>AirPort.BrcmNIC 1400.1.1
>!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
>!A!BHIDKeyboard 223
>IO!BHIDDriver 8.0.3d9
>!AHIDKeyboard 223
@kext.triggers 1.0
@kext.AMDRadeonX4030HWLibs 1.0
>DspFuncLib 283.15
@kext.OSvKernDSPLib 529
@kext.AMDRadeonX4000HWServices 4.0.2
>!AGraphicsControl 6.2.2
>!ASMBusPCI 1.0.14d1
>IOPlatformPluginLegacy 1.0.0
>X86PlatformPlugin 1.0.0
|IOSerial!F 11
|IOAVB!F 930.1
>IOPlatformPlugin!F 6.0.0d8
@!AGPUWrangler 6.2.2
|IOSlowAdaptiveClocking!F 1.0.0
>!ABacklightExpert 1.1.0
|IONDRVSupport 585
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>!AHDA!C 283.15
|IOHDA!F 283.15
|IOAudio!F 300.6.1
@vecLib.kext 1.2.0
>!AThunderboltEDMSink 5.0.3
|IOAccelerator!F2 439.52
@!AGraphicsDeviceControl 6.2.2
|IOGraphics!F 585
>!ASMBus!C 1.0.18d1
@plugin.IOgPTPPlugin 900.11
|IOEthernetAVB!C 1.1.0
|Broadcom!BHost!CUSBTransport 8.0.3d9
|IO!BHost!CUSBTransport 8.0.3d9
|IO!BHost!CTransport 8.0.3d9
>usb.IOUSBHostHIDDevice 1.2
>usb.!UHub 1.2
>usb.cdc 5.0.0
>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
>!AXsanScheme 3
|IOAHCIBlock!S 332
>!AThunderboltNHI 7.2.8
|IOThunderbolt!F 9.3.2
>usb.!UHostPacketFilter 1.0
|IOUSB!F 900.4.2
|IO80211!F 1200.12.2b1
|IOSkywalk!F 1
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>corecapture 1.0.4
>usb.!UXHCIPCI 1.2
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$!AImage4 3.0.0
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$quarantine 4
$sandbox 300.0
@Kext.!AMatch 1.0.0d1
|CoreAnalytics!F 1
>!ASSE 1.0
>!AKeyStore 2
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>!AMobileFileIntegrity 1.0.5
@kext.CoreTrust 1
>!AFDEKeyStore 28.30
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|IOPCI!F 2.9
|IOACPI!F 1.4
>watchdog 1
@kec.pthread 1
@kec.corecrypto 11.1
@kec.Libm 1

 

[wilberforce]

Try preventing it from sleeping:
Energy Saver
Prevent computer from sleeping automatically when the display is off

and, of course, don't deliberately put it to sleep.

It could well be the RAM. Try removing two of the sticks. If it still crashes, try the other two sticks

 

[diabloooo0]

Try preventing it from sleeping:
Energy Saver
Prevent computer from sleeping automatically when the display is off

and, of course, don't deliberately put it to sleep.

It could well be the RAM. Try removing two of the sticks. If it still crashes, try the other two sticks

Let me try that. I used to use Ctrl + Shift + Eject to turn off the display, I assume that won't put it to sleep?

I did tested the RAM with a tool as well as the mac hardware diagnose, all saying good. But the memory was upgraded RAM instead of original ones. So still there is possibility there. I also use upgraded SSD. So these two h/w are the most suspicious ones, but the upgrade was done right after I bought it like 6/7 years ago, and it worked well until Catalina upgrade. I am not a fan of keeping my mac always upgraded, but sometime it gives me no choice..