MBP 2015 Panic restart

[charlieChampion]

Hi folks

I am having several of these panic restarts every now and then. Nothing new happened or changed but it just kept restarting itself after momentary freeze (noticed the processing slowed down prior to freeze and subsequent restart). The error log is attached below. Appreciate if anyone could help me understand the root cause. Thank you so much.

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panic(cpu 3 caller 0xffffff800ac4c32a): Kernel trap at 0xffffff800a9982d3, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0xffffff825e10983c, CR3: 0x00000001ea888062, CR4: 0x00000000003626e0
RAX: 0x00000000c90d3dbf, RBX: 0xffffff801ea20400, RCX: 0xffffff801ea20800, RDX: 0x0100010000010300
RSP: 0xffffff913fbaba50, RBP: 0xffffff913fbabac0, RSI: 0xffffff801ea20000, RDI: 0x000000021b6acbc4
R8: 0xffffff83ee2602a8, R9: 0xffffff825e10983c, R10: 0xffffff8155466e10, R11: 0xffffff801ea20800
R12: 0xfffffe9fb5d7e000, R13: 0xffffff801ea20ffe, R14: 0x0000000000000001, R15: 0x0000000000000380
RFL: 0x0000000000010212, RIP: 0xffffff800a9982d3, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0xffffff825e10983c, Error code: 0x0000000000000000, Fault CPU: 0x3, PL: 1, VF: 5

Backtrace (CPU 3), Frame : Return Address
0xffffff913fbab4b0 : 0xffffff800ab215cd
0xffffff913fbab500 : 0xffffff800ac5a3c5
0xffffff913fbab540 : 0xffffff800ac4bf7e
0xffffff913fbab590 : 0xffffff800aac7a40
0xffffff913fbab5b0 : 0xffffff800ab20c97
0xffffff913fbab6b0 : 0xffffff800ab21087
0xffffff913fbab700 : 0xffffff800b2c2c7c
0xffffff913fbab770 : 0xffffff800ac4c32a
0xffffff913fbab8f0 : 0xffffff800ac4c028
0xffffff913fbab940 : 0xffffff800aac7a40
0xffffff913fbab960 : 0xffffff800a9982d3
0xffffff913fbabac0 : 0xffffff800aba0242
0xffffff913fbabb20 : 0xffffff800ab9fdb0
0xffffff913fbabb60 : 0xffffff800aba1ceb
0xffffff913fbabb90 : 0xffffff800abaa6d2
0xffffff913fbabca0 : 0xffffff800abaf2f9
0xffffff913fbabf10 : 0xffffff800ac4c54e
0xffffff913fbabfa0 : 0xffffff800aac794f

BSD process name corresponding to current thread: UserEventAgent

Mac OS version:19E287
Kernel versionarwin Kernel Version 19.4.0: Wed Mar 4 22:28:40 PST 2020; root:xnu-6153.101.6~15/RELEASE_X86_64
Kernel UUID: AB0AA7EE-3D03-3C21-91AD-5719D79D7AF6
Kernel slide: 0x000000000a800000
Kernel text base: 0xffffff800aa00000
__HIB text base: 0xffffff800a900000
System model name: MacBookPro12,1 (Mac-E43C1C25D4880AD6)
System shutdown begun: NO
Panic diags file available: YES (0x0)

System uptime in nanoseconds: 9556314051732
last loaded kext at 426061734169: @filesystems.smbfs 3.4.2 (addr 0xffffff7f8d9ab000, size 454656)
last unloaded kext at 590777055662: >!A!ILpssI2C 3.0.60 (addr 0xffffff7f8bfab000, size 40960)
loaded kexts:
@filesystems.smbfs 3.4.2
@filesystems.exfat 1.4
>!AMikeyHIDDriver 131
>AudioAUUC 1.70
@fileutil 20.036.15
>!APlatformEnabler 2.7.0d0
>AGPM 111.4.4
>X86PlatformShim 1.0.0
@filesystems.autofs 3.0
>!AUpstreamUserClient 3.6.8
>!AHDA 283.15
>!AGraphicsDevicePolicy 5.1.16
@AGDCPluginDisplayMetrics 5.1.16
>!AHV 1
|IOUserEthernet 1.0.1
|IO!BSerialManager 7.0.4f6
>eficheck 1
>pmtelemetry 1
@Dont_Steal_Mac_OS_X 7.0.0
>!A!IBDWGraphics 14.0.5
>!ABacklight 180.3
>!ALPC 3.1
>!ACameraInterface 7.6.0
|Broadcom!B20703USBTransport 7.0.4f6
>!AMCCSControl 1.11
>!A!IBDWGraphicsFramebuffer 14.0.5
>!A!ISlowAdaptiveClocking 4.0.0
>!AThunderboltIP 3.1.4
>!ASMCLMU 212
>!UCardReader 489.101.1
>!AVirtIO 1.0
@filesystems.hfs.kext 522.100.5
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
@BootCache 40
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
@filesystems.apfs 1412.101.1
>!AAHCIPort 341.0.2
>!ATopCaseHIDEventDriver 3430.1
>AirPort.BrcmNIC 1400.1.1
@private.KextAudit 1.0
>!ASmartBatteryManager 161.0.0
>!ARTC 2.0
>!AACPIButtons 6.1
>!AHPET 1.8
>!ASMBIOS 2.1
>!AACPIEC 6.1
>!AAPIC 1.7
$!AImage4 1
@nke.applicationfirewall 303
$TMSafetyNet 8
@!ASystemPolicy 2.0.0
|EndpointSecurity 1
@kext.triggers 1.0
>DspFuncLib 283.15
@kext.OSvKernDSPLib 529
>!AGraphicsControl 5.1.16
|IOAVB!F 840.3
>!ASSE 1.0
@!AGPUWrangler 5.1.16
>X86PlatformPlugin 1.0.0
>!ABacklightExpert 1.1.0
|IONDRVSupport 575.1
>IOPlatformPlugin!F 6.0.0d8
|Broadcom!BHost!CUSBTransport 7.0.4f6
|IO!BHost!CUSBTransport 7.0.4f6
|IO!BHost!CTransport 7.0.4f6
>!ASMBus!C 1.0.18d1
>!AHDA!C 283.15
|IOHDA!F 283.15
@!AGraphicsDeviceControl 5.1.16
|IOAccelerator!F2 438.4.5
|IOSlowAdaptiveClocking!F 1.0.0
|IOGraphics!F 575.1
@plugin.IOgPTPPlugin 840.3
|IOEthernetAVB!C 1.1.0
>usb.networking 5.0.0
>usb.!UHostCompositeDevice 1.2
|IOAudio!F 300.2
@vecLib.kext 1.2.0
|IOSerial!F 11
|IOSurface 269.11
@filesystems.hfs.encodings.kext 1
|IOAHCIBlock!S 316.100.5
>!AThunderboltDPInAdapter 6.2.6
>!AThunderboltDPAdapter!F 6.2.6
>!AThunderboltPCIDownAdapter 2.5.4
|IOAHCI!F 290.0.1
>!AActuatorDriver 3440.1
>!AHIDKeyboard 209
>!AHS!BDriver 3430.1
>IO!BHIDDriver 7.0.4f6
|IO!B!F 7.0.4f6
|IO!BPacketLogger 7.0.4f6
>!AMultitouchDriver 3440.1
>!AInputDeviceSupport 3440.8
>!AHSSPIHIDDriver 59
>!AThunderboltNHI 5.8.6
|IOThunderbolt!F 7.6.0
|IO80211!F 1200.12.2b1
>mDNSOffloadUserClient 1.0.1b8
>corecapture 1.0.4
|IOSkywalk!F 1
>!AHSSPISupport 59
|IOUSB!F 900.4.2
>!A!ILpssSpi!C 3.0.60
>!A!ILpssGspi 3.0.60
>!A!ILpssDmac 3.0.60
>usb.!UXHCIPCI 1.2
>usb.!UXHCI 1.2
>!AEFINVRAM 2.1
>!AEFIRuntime 2.1
|IOSMBus!F 1.1
|IOHID!F 2.0.0
$quarantine 4
$sandbox 300.0
@Kext.!AMatch 1.0.0d1
>DiskImages 493.0.0
>!AFDEKeyStore 28.30
>!AEffaceable!S 1.0
>!AKeyStore 2
>!UTDM 489.101.1
|IOSCSIBlockCommandsDevice 422.101.1
>!ACredentialManager 1.0
>KernelRelayHost 1
>!ASEPManager 1.0.1
>IOSlaveProcessor 1
|IOUSBMass!SDriver 157.101.3
|IOSCSIArchitectureModel!F 422.101.1
|IO!S!F 2.1
|IOUSBHost!F 1.2
>!UHostMergeProperties 1.2
>usb.!UCommon 1.0
>!ABusPower!C 1.0
|CoreAnalytics!F 1
>!AMobileFileIntegrity 1.0.5
@kext.CoreTrust 1
|IOTimeSync!F 840.3
|IONetworking!F 3.4
|IOReport!F 47
>!AACPIPlatform 6.1
>!ASMC 3.1.9
>watchdog 1
|IOPCI!F 2.9
|IOACPI!F 1.4
@kec.pthread 1
@kec.corecrypto 1.0
@kec.Libm 1

***********

 

[hobowankenobi]

Most KPs are from one of two things:

• Bad RAM
• 3rd party Kernel Extensions (kext)

One thing you can do to test and see if it is caused by 3rd party software is to boot in Safe Mode. This will disable all 3rd party software and kexts when you boot. No more panics = 3rd party software/kext is to blame.

Third-party kexts are typically installed here: Macintosh/Library/Extensions

 

[charlieChampion]

Most KPs are from one of two things:

• Bad RAM
• 3rd party Kernel Extensions (kext)

One thing you can do to test and see if it is caused by 3rd party software is to boot in Safe Mode. This will disable all 3rd party software and kexts when you boot. No more panics = 3rd party software/kext is to blame.

Third-party kexts are typically installed here: Macintosh/Library/Extensions

Thanks, I will try this. But what if there is still panic? This would mean it is due to bad RAM?

 

[hobowankenobi]

If you still get panics in Safe Mode...it rules out third party software and associated components like kext files.

That leaves the next most common culprits:

• RAM (on machines with upgradable RAM)
• OS problems

It is possible there is some other hardware issue, but that is less likely. So...if you still get panics in Safe Mode, you could reinstall the OS from recovery mode. A good idea to back up the machine before doing this, even though it is a low risk procedure.

You could also look at RAM, especially if it has ever been changed/upgraded.

What OS are you running now? Depending on the Mac, you might consider updating the OS too. Does it have a HD or SSD? Outside chance a failing HD might cause issues too.