User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.1 Safari/605.1.15

Steps to reproduce:

macOS Big Sur installed on formatted SSD. Just casual browsing

Actual results:

OS randomly freezes, coolers go wild for a second and laptop restarts with error. It happens several times a day. Firefox is installed on fresh OS.

panic(cpu 9 caller 0xffffff80052bffa6): "os_refcnt: underflow (rc=0xffffff86bdf72f34)\n"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-7195.50.7/libkern/os/refcnt.c:46
Backtrace (CPU 9), Frame : Return Address
0xffffffb0c929bb40 : 0xffffff8004abc66d
0xffffffb0c929bb90 : 0xffffff8004bff073
0xffffffb0c929bbd0 : 0xffffff8004bef6aa
0xffffffb0c929bc20 : 0xffffff8004a61a2f
0xffffffb0c929bc40 : 0xffffff8004abbf0d
0xffffffb0c929bd60 : 0xffffff8004abc1f8
0xffffffb0c929bdd0 : 0xffffff80052bee1a
0xffffffb0c929be40 : 0xffffff80052bffa6
0xffffffb0c929be50 : 0xffffff800501748f
0xffffffb0c929beb0 : 0xffffff8005019100
0xffffffb0c929bf40 : 0xffffff8005169ceb
0xffffffb0c929bfa0 : 0xffffff8004a621f6

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

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: 0x0000000004800000
KernelCache base: 0xffffff8004a00000
Kernel slide: 0x0000000004810000
Kernel text base: 0xffffff8004a10000
__HIB text base: 0xffffff8004900000
System model name: MacBookPro15,3 (Mac-1E7E29AD0135F9BC)
System shutdown begun: NO
Hibernation exit count: 0

System uptime in nanoseconds: 1064513741644
Last Sleep: absolute base_tsc base_nano
Uptime : 0x000000f7d9f6a8c3
Sleep : 0x0000000000000000 0x0000000000000000 0x0000000000000000
Wake : 0x0000000000000000 0x0000000690393d58 0x0000000000000000
last started kext at 46650810340: com.rugarciap.DisableTurboBoost 0.0.1 (addr 0xffffff7fa5d6a000, size 4096)
loaded kexts:
com.rugarciap.DisableTurboBoost 0.0.1

!ATopCaseHIDEventDriver 4000.27
!AHIDALSService 1
AGPM 119
X86PlatformShim 1.0.0
!APlatformEnabler 2.7.0d0
@filesystems.autofs 3.0
@kext.AMDFramebuffer 4.0.0
@fileutil 20.036.15
@kext.AMDRadeonX5000 4.0.0
@kext.AMDRadeonServiceManager 4.0.0
!AUpstreamUserClient 3.6.8
!AGraphicsDevicePolicy 6.1.27
@AGDCPluginDisplayMetrics 6.1.27
pmtelemetry 1
LuaHardwareAccess 1.0.16
|IOUserEthernet 1.0.1
usb.!UUserHCI 1
|IO!BSerialManager 8.0.1f5
!A!IKBLGraphics 16.0.0
AGDCBacklightControl 6.1.27
!ABacklight 180.3
@Dont_Steal_Mac_OS_X 7.0.0
!AHV 1
!ADiskImages2 1
!ABridgeAudio!C 100.2
BridgeAudioCommunication 100.2
!AAVEBridge 6.1
ACPI_SMC_PlatformPlugin 1.0.0
!AMCCSControl 1.14
!AMuxControl2 6.1.27
!AThunderboltIP 4.0.3
!AGFXHDA 100.1.431
!AFIVRDriver 4.1.0
!A!ICFLGraphicsFramebuffer 16.0.0
!A!IPCHPMC 2.0.1
@kext.AMD10000!C 4.0.0
!A!ISlowAdaptiveClocking 4.0.0
|SCSITaskUserClient 436.40.6
usb.realtek8153patcher 5.0.0
BCMWLANFirmware4378.Hashstore 1
BCMWLANFirmware4377.Hashstore 1
BCMWLANFirmware4364.Hashstore 1
BCMWLANFirmware4355.Hashstore 1
!AFileSystemDriver 3.0.1
@filesystems.tmpfs 1
@filesystems.hfs.kext 556.41.1
@BootCache 40
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
!ABCMWLANBusInterfacePCIeMac 1
@filesystems.apfs 1677.50.1
@private.KextAudit 1.0
!ASmartBatteryManager 161.0.0
!AACPIButtons 6.1
!ASMBIOS 2.1
!AACPIEC 6.1
!AAPIC 1.7
@!ASystemPolicy 2.0.0
@nke.applicationfirewall 310
|IOKitRegistryCompatibility 1
|EndpointSecurity 1
!AHIDKeyboard 222
!AHS!BDriver 4000.27
IO!BHIDDriver 8.0.1f5
!AActuatorDriver 4400.28
!AMultitouchDriver 4400.28
!AInputDeviceSupport 4400.35
@kext.triggers 1.0
@kext.AMDRadeonX5200HWLibs 1.0
@kext.AMDRadeonX5000HWServices 4.0.0
|IOAVB!F 900.12
usb.cdc.acm 5.0.0
usb.serial 6.0.0
!ABacklightExpert 1.1.0
IOPlatformPluginLegacy 1.0.0
X86PlatformPlugin 1.0.0
|IO!BHost!CUARTTransport 8.0.1f5
|IO!BHost!CTransport 8.0.1f5
!ASMBus!C 1.0.18d1
!AGraphicsControl 6.1.27
!AThunderboltEDMSink 5.0.3
!AThunderboltDPOutAdapter 8.1.4
@plugin.IOgPTPPlugin 900.11
|IOEthernetAVB!C 1.1.0
!AHDA!C 283.15
|IOHDA!F 283.15
|IONDRVSupport 585
|IOAudio!F 300.6.1
@vecLib.kext 1.2.0
|IOAccelerator!F2 439.35.4
IOPlatformPlugin!F 6.0.0d8
!ASMBusPCI 1.0.14d1
@!AGPUWrangler 6.1.27
!A!ILpssUARTv1 3.0.60
!A!ILpssUARTCommon 3.0.60
!AOnboardSerial 1.0
@kext.AMDSupport 4.0.0
@!AGraphicsDeviceControl 6.1.27
|IOGraphics!F 585
|IOSlowAdaptiveClocking!F 1.0.0
usb.cdc.ecm 5.0.0
usb.IOUSBHostHIDDevice 1.2
usb.cdc.ncm 5.0.0
usb.!UHub 1.2
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 289.3
@filesystems.hfs.encodings.kext 1
!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
!AThunderboltNHI 7.2.8
|IOThunderbolt!F 9.3.2
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.!UHostPacketFilter 1.0
|IOUSB!F 900.4.2
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 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
=============
panic(cpu 6 caller 0xffffff801ffefa76): Kernel trap at 0xffffff8020418cfe, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000000000, CR3: 0x000000021a98a14f, CR4: 0x00000000003626e0
RAX: 0x0000000000000000, RBX: 0xffffff86db6e0280, RCX: 0x0000000000000000, RDX: 0x0000000001000000
RSP: 0xffffffb0e6a63ec0, RBP: 0xffffffb0e6a63f40, RSI: 0xffffff86d7469f10, RDI: 0x0000000000000000
R8: 0x0000000000000000, R9: 0x0000000000000000, R10: 0x0000000000000000, R11: 0x0000000000000000
R12: 0xffffff86d7469e40, R13: 0xffffff86ddf35680, R14: 0x0000000000000112, R15: 0xffffff86d7469f10
RFL: 0x0000000000010246, RIP: 0xffffff8020418cfe, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x0000000000000000, Error code: 0x0000000000000000, Fault CPU: 0x6, PL: 0, VF: 0

Backtrace (CPU 6), Frame : Return Address
0xffffffb0e6a638e0 : 0xffffff801febc66d
0xffffffb0e6a63930 : 0xffffff801ffff073
0xffffffb0e6a63970 : 0xffffff801ffef6aa
0xffffffb0e6a639c0 : 0xffffff801fe61a2f
0xffffffb0e6a639e0 : 0xffffff801febbf0d
0xffffffb0e6a63b00 : 0xffffff801febc1f8
0xffffffb0e6a63b70 : 0xffffff80206bee1a
0xffffffb0e6a63be0 : 0xffffff801ffefa76
0xffffffb0e6a63d60 : 0xffffff801ffef75d
0xffffffb0e6a63db0 : 0xffffff801fe61a2f
0xffffffb0e6a63dd0 : 0xffffff8020418cfe
0xffffffb0e6a63f40 : 0xffffff8020569ceb
0xffffffb0e6a63fa0 : 0xffffff801fe621f6

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

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: 0x000000001fc00000
KernelCache base: 0xffffff801fe00000
Kernel slide: 0x000000001fc10000
Kernel text base: 0xffffff801fe10000
__HIB text base: 0xffffff801fd00000
System model name: MacBookPro15,3 (Mac-1E7E29AD0135F9BC)
System shutdown begun: NO
Hibernation exit count: 0

System uptime in nanoseconds: 8574840737277
Last Sleep: absolute base_tsc base_nano
Uptime : 0x000007cc7c561191
Sleep : 0x00000527574deea0 0x000000005be17518 0x000004f77f3f7b4a
Wake : 0x0000052762228720 0x000000005dde498c 0x000005275f5a5af4
last started kext at 7032452805574: >usb.!UUserHCI 1 (addr 0xffffff7fbf9ef000, size 98304)
last stopped kext at 7870642031921: >usb.!UUserHCI 1 (addr 0xffffff7fbf9ef000, size 98304)
loaded kexts:

usb.realtek8153patcher 5.0.0
!ATopCaseHIDEventDriver 4000.27
!AHIDALSService 1
X86PlatformShim 1.0.0
!APlatformEnabler 2.7.0d0
AGPM 119
@filesystems.autofs 3.0
@kext.AMDFramebuffer 4.0.0
@fileutil 20.036.15
@kext.AMDRadeonX5000 4.0.0
@kext.AMDRadeonServiceManager 4.0.0
!AUpstreamUserClient 3.6.8
!AGraphicsDevicePolicy 6.1.27
@AGDCPluginDisplayMetrics 6.1.27
pmtelemetry 1
LuaHardwareAccess 1.0.16
!A!IKBLGraphics 16.0.0
|IOUserEthernet 1.0.1
|IO!BSerialManager 8.0.1f5
@Dont_Steal_Mac_OS_X 7.0.0
!AHV 1
!ADiskImages2 1
!AGFXHDA 100.1.431
BridgeAudioCommunication 100.2
!AThunderboltIP 4.0.3
@kext.AMD10000!C 4.0.0
AGDCBacklightControl 6.1.27
!AMCCSControl 1.14
!AAVEBridge 6.1
!AMuxControl2 6.1.27
!ABridgeAudio!C 100.2
!A!IPCHPMC 2.0.1
!A!ICFLGraphicsFramebuffer 16.0.0
!A!ISlowAdaptiveClocking 4.0.0
BCMWLANFirmware4378.Hashstore 1
BCMWLANFirmware4377.Hashstore 1
BCMWLANFirmware4364.Hashstore 1
BCMWLANFirmware4355.Hashstore 1
@filesystems.tmpfs 1
@filesystems.hfs.kext 556.41.1
@BootCache 40
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
!ABCMWLANBusInterfacePCIeMac 1
@filesystems.apfs 1677.50.1
@private.KextAudit 1.0
!ASmartBatteryManager 161.0.0
!AACPIButtons 6.1
!ASMBIOS 2.1
!AACPIEC 6.1
!AAPIC 1.7
@!ASystemPolicy 2.0.0
@nke.applicationfirewall 310
|IOKitRegistryCompatibility 1
|EndpointSecurity 1
usb.!UHub 1.2
!AHS!BDriver 4000.27
IO!BHIDDriver 8.0.1f5
!AHIDKeyboard 222
!AActuatorDriver 4400.28
!AMultitouchDriver 4400.28
!AInputDeviceSupport 4400.35
@kext.triggers 1.0
@kext.AMDRadeonX5200HWLibs 1.0
@kext.AMDRadeonX5000HWServices 4.0.0
|IO!BHost!CUARTTransport 8.0.1f5
|IO!BHost!CTransport 8.0.1f5
!A!ILpssUARTv1 3.0.60
!A!ILpssUARTCommon 3.0.60
!AOnboardSerial 1.0
|IOAVB!F 900.12
@plugin.IOgPTPPlugin 900.11
|IOEthernetAVB!C 1.1.0
@kext.AMDSupport 4.0.0
!ABacklightExpert 1.1.0
|IONDRVSupport 585
!ASMBus!C 1.0.18d1
X86PlatformPlugin 1.0.0
@!AGPUWrangler 6.1.27
!AGraphicsControl 6.1.27
|IOAudio!F 300.6.1
@vecLib.kext 1.2.0
IOPlatformPlugin!F 6.0.0d8
|IOAccelerator!F2 439.35.4
@!AGraphicsDeviceControl 6.1.27
|IOGraphics!F 585
|IOSlowAdaptiveClocking!F 1.0.0
usb.cdc.ncm 5.0.0
usb.cdc 5.0.0
usb.networking 5.0.0
usb.!UHostCompositeDevice 1.2
!AThunderboltDPInAdapter 8.1.4
!AThunderboltDPAdapter!F 8.1.4
!AThunderboltPCIDownAdapter 4.1.1
!AHPM 3.4.4
!A!ILpssI2C!C 3.0.60
!A!ILpssI2C 3.0.60
!A!ILpssDmac 3.0.60
!ABSDKextStarter 3
|IOSurface 289.3
@filesystems.hfs.encodings.kext 1
!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
!AThunderboltNHI 7.2.8
|IOThunderbolt!F 9.3.2
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
|IOUSB!F 900.4.2
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 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
=======================
panic(cpu 6 caller 0xffffff80063efa76): Kernel trap at 0xffffff800681ef11, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0x0000000000000000, CR3: 0x00000001dcd7b21b, CR4: 0x00000000003626e0
RAX: 0x0000000000000000, RBX: 0xffffff86b82f9a50, RCX: 0xffffff9372e1ec80, RDX: 0x0000000000000001
RSP: 0xffffffb0f2b6bd00, RBP: 0xffffffb0f2b6bd30, RSI: 0xffffff8034307ba0, RDI: 0x0000000000000000
R8: 0x0000000000000000, R9: 0x0000000000989680, R10: 0xffffffa054323dc0, R11: 0xffffff86c1ee1480
R12: 0xffffff86b6cc1720, R13: 0x0000000000000001, R14: 0xffffff86c79473b8, R15: 0x000000000000002d
RFL: 0x0000000000010246, RIP: 0xffffff800681ef11, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x0000000000000000, Error code: 0x0000000000000000, Fault CPU: 0x6, PL: 0, VF: 0

Backtrace (CPU 6), Frame : Return Address
0xffffffb0f2b6b720 : 0xffffff80062bc66d
0xffffffb0f2b6b770 : 0xffffff80063ff073
0xffffffb0f2b6b7b0 : 0xffffff80063ef6aa
0xffffffb0f2b6b800 : 0xffffff8006261a2f
0xffffffb0f2b6b820 : 0xffffff80062bbf0d
0xffffffb0f2b6b940 : 0xffffff80062bc1f8
0xffffffb0f2b6b9b0 : 0xffffff8006abee1a
0xffffffb0f2b6ba20 : 0xffffff80063efa76
0xffffffb0f2b6bba0 : 0xffffff80063ef75d
0xffffffb0f2b6bbf0 : 0xffffff8006261a2f
0xffffffb0f2b6bc10 : 0xffffff800681ef11
0xffffffb0f2b6bd30 : 0xffffff800655a486
0xffffffb0f2b6bf40 : 0xffffff8006969ceb
0xffffffb0f2b6bfa0 : 0xffffff80062621f6

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

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: 0x0000000006000000
KernelCache base: 0xffffff8006200000
Kernel slide: 0x0000000006010000
Kernel text base: 0xffffff8006210000
__HIB text base: 0xffffff8006100000
System model name: MacBookPro15,3 (Mac-1E7E29AD0135F9BC)
System shutdown begun: NO
Hibernation exit count: 4

System uptime in nanoseconds: 63757912632126
Last Sleep: absolute base_tsc base_nano
Uptime : 0x000039fccbbbf144
Sleep : 0x00002d0b3c558603 0x000000005f82ed52 0x000029e2048ff968
Wake : 0x00002d0b47781c57 0x000000005dceafee 0x00002d0b44a5bb94
last started kext at 49528717425548: com.rugarciap.DisableTurboBoost 0.0.1 (addr 0xffffff7fa756a000, size 4096)
last stopped kext at 49527483106086: com.rugarciap.DisableTurboBoost 0.0.1 (addr 0xffffff7fa756a000, size 4096)
loaded kexts:
com.rugarciap.DisableTurboBoost 0.0.1
@filesystems.cd9660 1.4.4

!ATopCaseHIDEventDriver 4000.27
!AHIDALSService 1
AGPM 119
!APlatformEnabler 2.7.0d0
X86PlatformShim 1.0.0
@filesystems.autofs 3.0
@kext.AMDFramebuffer 4.0.0
@fileutil 20.036.15
!AUpstreamUserClient 3.6.8
@kext.AMDRadeonX5000 4.0.0
@kext.AMDRadeonServiceManager 4.0.0
!AGraphicsDevicePolicy 6.1.27
!A!IKBLGraphics 16.0.0
BridgeAudioCommunication 100.2
!AAVEBridge 6.1
@AGDCPluginDisplayMetrics 6.1.27
!ABridgeAudio!C 100.2
pmtelemetry 1
LuaHardwareAccess 1.0.16
|IOUserEthernet 1.0.1
usb.!UUserHCI 1
|IO!BSerialManager 8.0.1f5
@Dont_Steal_Mac_OS_X 7.0.0
!AHV 1
!ADiskImages2 1
!AFIVRDriver 4.1.0
!A!ISlowAdaptiveClocking 4.0.0
!A!IPCHPMC 2.0.1
ACPI_SMC_PlatformPlugin 1.0.0
!A!ICFLGraphicsFramebuffer 16.0.0
!AGFXHDA 100.1.431
!AThunderboltIP 4.0.3
!AMuxControl2 6.1.27
@kext.AMD10000!C 4.0.0
AGDCBacklightControl 6.1.27
!ABacklight 180.3
!AMCCSControl 1.14
|SCSITaskUserClient 436.40.6
usb.realtek8153patcher 5.0.0
BCMWLANFirmware4378.Hashstore 1
BCMWLANFirmware4377.Hashstore 1
BCMWLANFirmware4364.Hashstore 1
BCMWLANFirmware4355.Hashstore 1
!AFileSystemDriver 3.0.1
@filesystems.tmpfs 1
@filesystems.hfs.kext 556.41.1
@BootCache 40
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
!ABCMWLANBusInterfacePCIeMac 1
@filesystems.apfs 1677.50.1
@private.KextAudit 1.0
!ASmartBatteryManager 161.0.0
!AACPIButtons 6.1
!ASMBIOS 2.1
!AACPIEC 6.1
!AAPIC 1.7
@!ASystemPolicy 2.0.0
@nke.applicationfirewall 310
|IOKitRegistryCompatibility 1
|EndpointSecurity 1
!UAudio 401.4
!AHIDKeyboard 222
!AHS!BDriver 4000.27
IO!BHIDDriver 8.0.1f5
!AActuatorDriver 4400.28
!AMultitouchDriver 4400.28
!AInputDeviceSupport 4400.35
@kext.triggers 1.0
@kext.AMDRadeonX5200HWLibs 1.0
@kext.AMDRadeonX5000HWServices 4.0.0
usb.cdc.acm 5.0.0
usb.serial 6.0.0
|IOAVB!F 900.12
@plugin.IOgPTPPlugin 900.11
|IOEthernetAVB!C 1.1.0
@!AGPUWrangler 6.1.27
|IOSlowAdaptiveClocking!F 1.0.0
|IO!BHost!CUARTTransport 8.0.1f5
|IO!BHost!CTransport 8.0.1f5
IOPlatformPluginLegacy 1.0.0
X86PlatformPlugin 1.0.0
IOPlatformPlugin!F 6.0.0d8
|IOAccelerator!F2 439.35.4
!AHDA!C 283.15
|IOHDA!F 283.15
|IOAudio!F 300.6.1
@vecLib.kext 1.2.0
!A!ILpssUARTv1 3.0.60
!A!ILpssUARTCommon 3.0.60
!AOnboardSerial 1.0
!ASMBusPCI 1.0.14d1
!AThunderboltEDMSink 5.0.3
!AThunderboltDPOutAdapter 8.1.4
!AGraphicsControl 6.1.27
@kext.AMDSupport 4.0.0
@!AGraphicsDeviceControl 6.1.27
!ABacklightExpert 1.1.0
|IONDRVSupport 585
|IOGraphics!F 585
!ASMBus!C 1.0.18d1
usb.IOUSBHostHIDDevice 1.2
usb.cdc.ecm 5.0.0
usb.cdc.ncm 5.0.0
usb.!UHub 1.2
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 289.3
@filesystems.hfs.encodings.kext 1
!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
!AThunderboltNHI 7.2.8
|IOThunderbolt!F 9.3.2
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.!UHostPacketFilter 1.0
|IOUSB!F 900.4.2
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 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

Expected results:

I hope I can browse without kernel panics. I've switched to Safari for the last two days and didn't have any issues.

I have also had similar kernel panics related to plugin-container on Firefox nightly (v85 current) on macOS Big Sur 11.1 Beta 1.

(In reply to jason from comment #1)

I have also had similar kernel panics related to plugin-container on Firefox nightly (v85 current) on macOS Big Sur 11.1 Beta 1.

Wow! Was it «Temporary Containers» add-on or built in Container Tabs?

I use continers with the Multi-Account Containers extension, but I don't know if that's related to the kernel panics. Based on a recent Reddit /r/Firefox thread, I disabled hardware acceleration to see if that resolves the issue. So far, no crashes.

https://www.reddit.com/r/firefox/comments/k0n4or/kernel_panic_with_pluginconverter_process_on/

I've also had frequent kernel panics. probably 3 over the past month, but since updating to the lastest nightly I've had 6!

Just had another kernel panic with hardware acceleration disabled on the latest nightly....

panic(cpu 6 caller 0xffffff8019de6ee6): Kernel trap at 0x0000000000000000, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000000000, CR3: 0x000000022b4fd1a4, CR4: 0x00000000003626e0
RAX: 0xffffff801a4cfe78, RBX: 0xffffff86f45b1300, RCX: 0xffffff7732c26a50, RDX: 0x00ffffff86f45b13
RSP: 0xffffffa0b5c4be58, RBP: 0xffffffa0b5c4beb0, RSI: 0xffffffa0b5c4be80, RDI: 0xffffff86f45e18c0
R8: 0x0000000000000001, R9: 0x00000000f86f4054, R10: 0x0000000000000001, R11: 0x0000000000000020
R12: 0xffffff86f45e18c0, R13: 0xffffff86f45e18c0, R14: 0x0000000000000000, R15: 0xffffff86f45e18c0
RFL: 0x0000000000010246, RIP: 0x0000000000000000, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x0000000000000000, Error code: 0x0000000000000010, Fault CPU: 0x6, PL: 0, VF: 0

Backtrace (CPU 6), Frame : Return Address
0xffffffa0b5c4b870 : 0xffffff8019cb38fd
0xffffffa0b5c4b8c0 : 0xffffff8019df64e3
0xffffffa0b5c4b900 : 0xffffff8019de6b1a
0xffffffa0b5c4b950 : 0xffffff8019c58a2f
0xffffffa0b5c4b970 : 0xffffff8019cb319d
0xffffffa0b5c4ba90 : 0xffffff8019cb3488
0xffffffa0b5c4bb00 : 0xffffff801a4b7c8a
0xffffffa0b5c4bb70 : 0xffffff8019de6ee6
0xffffffa0b5c4bcf0 : 0xffffff8019de6bcd
0xffffffa0b5c4bd40 : 0xffffff8019c58a2f
0xffffffa0b5c4bd60 : 0x0
0xffffffa0b5c4beb0 : 0xffffff801a211100
0xffffffa0b5c4bf40 : 0xffffff801a3625cb
0xffffffa0b5c4bfa0 : 0xffffff8019c591f6

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

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/RELEASE_X86_64
Kernel UUID: 1C1D9321-73E9-3B05-AD5D-926E3B0E53AB
KernelCache slide: 0x0000000019a00000
KernelCache base: 0xffffff8019c00000
Kernel slide: 0x0000000019a10000
Kernel text base: 0xffffff8019c10000
__HIB text base: 0xffffff8019b00000
System model name: iMacPro1,1 (Mac-7BA5B2D9E42DDD94)
System shutdown begun: NO
Hibernation exit count: 0

System uptime in nanoseconds: 9072077568111
Last Sleep: absolute base_tsc base_nano
Uptime : 0x0000084041f5fc10
Sleep : 0x0000000000000000 0x0000000000000000 0x0000000000000000
Wake : 0x0000000000000000 0x0000c2aa7db4469e 0x0000000000000000
last started kext at 4466170282137: @nke.ppp 1.9 (addr 0xffffff7fbac0a000, size 40960)
loaded kexts:
@filesystems.smbfs 3.4.1

!ATopCaseHIDEventDriver 4020.6
AudioAUUC 1.70
AGPM 119
!APlatformEnabler 2.7.0d0
X86PlatformShim 1.0.0
@filesystems.autofs 3.0
!AHIDALSService 1
@fileutil 20.036.15
!AUpstreamUserClient 3.6.8
@kext.AMDFramebuffer 4.0.2
@kext.AMDRadeonServiceManager 4.0.2
@kext.AMDRadeonX5000 4.0.2
!AGraphicsDevicePolicy 6.2.2
@AGDCPluginDisplayMetrics 6.2.2
pmtelemetry 1
LuaHardwareAccess 1.0.16
|IOUserEthernet 1.0.1
usb.!UUserHCI 1
|IO!BSerialManager 8.0.2f2
BridgeAudioCommunication 100.2
!AAVEBridge 6.1
@Dont_Steal_Mac_OS_X 7.0.0
!AHV 1
!AFIVRDriver 4.1.0
!AThunderboltIP 4.0.3
@kext.AMD10000!C 4.0.2
!ADiskImages2 1
ACPI_SMC_PlatformPlugin 1.0.0
!AMuxControl2 6.2.2
!A!IMCEReporter 115
AGDCBacklightControl 6.2.2
!ABacklight 180.3
!AMCCSControl 1.14
!ABridgeAudio!C 100.2
!A!IPCHPMC 2.0.1
!AGFXHDA 100.1.431
!A!ISlowAdaptiveClocking 4.0.0
Core!SFsck 554
!UCardReader 511.60.2
usb.!UHostBillboardDevice 1.0
@!AEthernetAquantiaAqtionFirmware 1.0.36
|SCSITaskUserClient 436.40.6
BCMWLANFirmware4378.Hashstore 1
BCMWLANFirmware4377.Hashstore 1
BCMWLANFirmware4364.Hashstore 1
BCMWLANFirmware4355.Hashstore 1
@filesystems.apfs 1677.60.22
!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
!ABCMWLANBusInterfacePCIeMac 1
@private.KextAudit 1.0
!AACPIButtons 6.1
!ASMBIOS 2.1
!AACPIEC 6.1
!AAPIC 1.7
@!ASystemPolicy 2.0.0
@nke.applicationfirewall 310
|IOKitRegistryCompatibility 1
|EndpointSecurity 1
@nke.ppp 1.9
!AHIDKeyboard 222
!AActuatorDriver 4400.28
!AMultitouchDriver 4400.28
!AInputDeviceSupport 4400.35
!AHS!BDriver 4020.6
IO!BHIDDriver 8.0.2f2
@kext.triggers 1.0
@kext.AMDRadeonX5100HWLibs 1.0
|IOAccelerator!F2 439.52
@kext.AMDRadeonX5000HWServices 4.0.2
|IOAVB!F 900.12
|IO!BHost!CUARTTransport 8.0.2f2
|IO!BHost!CTransport 8.0.2f2
!AThunderboltEDMSink 5.0.3
!AThunderboltDPOutAdapter 8.1.4
@kext.AMDSupport 4.0.2
IOPlatformPluginLegacy 1.0.0
X86PlatformPlugin 1.0.0
!AGraphicsControl 6.2.2
!ABacklightExpert 1.1.0
!ASMBus!C 1.0.18d1
!ASMBusPCI 1.0.14d1
@!AGPUWrangler 6.2.2
@!AGraphicsDeviceControl 6.2.2
!A!ILpssUARTv1 3.0.60
!A!ILpssUARTCommon 3.0.60
!AOnboardSerial 1.0
!UAudio 401.4
!AHDA!C 283.15
|IOHDA!F 283.15
IOPlatformPlugin!F 6.0.0d8
|IONDRVSupport 585
|IOGraphics!F 585
|IOAudio!F 300.6.1
@vecLib.kext 1.2.0
@plugin.IOgPTPPlugin 900.11
|IOEthernetAVB!C 1.1.0
|IOSlowAdaptiveClocking!F 1.0.0
Core!S 554
usb.IOUSBHostHIDDevice 1.2
usb.!UHub 1.2
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
!AXsanScheme 3
!ABSDKextStarter 3
|IOSurface 289.3
usb.!UVHCIBCE 1.2
usb.!UVHCICommonBCE 1.0
usb.!UVHCI 1.2
usb.!UVHCICommon 1.0
!AEffaceableNOR 1.0
!AHPM 3.4.4
!A!ILpssI2C!C 3.0.60
!A!ILpssI2C 3.0.60
!A!ILpssDmac 3.0.60
!AThunderboltDPInAdapter 8.1.4
!AThunderboltDPAdapter!F 8.1.4
!AThunderboltPCIDownAdapter 4.1.1
|IOBufferCopy!C 1.1.0
|IOBufferCopyEngine!F 1
|IONVMe!F 2.1.0
@filesystems.hfs.encodings.kext 1
!ABCMWLANCoreMac 1.0.0
|IOSerial!F 11
|IO80211!FV2 1200.12.2b1
|IOSkywalk!F 1
IOImageLoader 1.0.0
corecapture 1.0.4
!AThunderboltNHI 7.2.8
|IOThunderbolt!F 9.3.2
usb.!UHostPacketFilter 1.0
|IOUSB!F 900.4.2
usb.!UXHCIPCI 1.2
usb.!UXHCI 1.2
!AEthernetAquantiaAqtion 1.0.64
mDNSOffloadUserClient 1.0.1b8
!AEFINVRAM 2.1
!AEFIRuntime 2.1
!ASMCRTC 1.0
|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

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

We have reached out to Apple in bug 1678428. I'm need-info'ing Markus in case there is anything in this bug that we should pass along.

Interesting, Stephen. I do not have the extension in bug 1678428, but I do have the following extensions enabled:

1Password
Cisco Webex Extension
ClearURLs
Cookie AutoDelete
Firefox Multi-Account Containers
Grammar and Spell Checker — LanguageTool
LocalCDN
NelliTab
Raindrop.io
Reddit Enhancement Suite
Side View
uBlock Origin

I wonder if the offending call made by the extension listed in your ticket is the same as in one of mine.

Added myself to CC.

Just upgraded to macOS Big Sur 11.1 Beta 2, will update the ticket if I receive any crashes. I also re-enabled hardware acceleration as that didn't appear to make any difference in the crashes.

My extensions are:

• Bitwarden
• ClearURLs
• Cookie AutoDelete
• Grammar and Spell Checker — LanguageTool
• LocalCDN
• SimpleLogin
• Tabliss
• uBlock Origin
• VivaldiFox

I'm seeing this a couple of times a day. Occasionally the panic is attributed to some other process but it is mostly firefox or plugin-container.

Kernel panic on macOS 11.1 Beta 2. Possibly a different problem given the panic message references the line number in xnu:

panic(cpu 0 caller 0xffffff800acbffa6): "os_refcnt: underflow (rc=0xffffff86e03cce54)\n"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-7195.50.7/libkern/os/refcnt.c:46

plugin-container was running at the time.

Still receiving kernel panics on macOS 11.1 RC

I've seen this three times, the first time on November 30th. Currently running macOS 11.0 on my 16" MBP 2019.

panic(cpu 10 caller 0xffffff800afefa76): Kernel trap at 0xffffff800b41ef11, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000000000, CR3: 0x0000000635f1b07b, CR4: 0x00000000003626e0
RAX: 0x0000000000000000, RBX: 0xffffff86d68b4210, RCX: 0xffffff938f42dc80, RDX: 0x0000000000000001
RSP: 0xffffffa092e7beb0, RBP: 0xffffffa092e7bee0, RSI: 0xffffff86d68b4210, RDI: 0x0000000000000000
R8: 0xffffffa092e7bf10, R9: 0x0000000000000000, R10: 0x0000000000000000, R11: 0x0000000000000000
R12: 0xffffff86de0570a0, R13: 0x0000000000000001, R14: 0xffffff86df7ba198, R15: 0x000000000000001d
RFL: 0x0000000000010246, RIP: 0xffffff800b41ef11, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x0000000000000000, Error code: 0x0000000000000000, Fault CPU: 0xa, PL: 1, VF: 0

Backtrace (CPU 10), Frame : Return Address
0xffffffa092e7b8d0 : 0xffffff800aebc66d
0xffffffa092e7b920 : 0xffffff800afff073
0xffffffa092e7b960 : 0xffffff800afef6aa

I don't have the extension from bug 1678428; I only have Bitwarden, Mozilla Pioneer and Sideview.
0xffffffa092e7b9b0 : 0xffffff800ae61a2f
0xffffffa092e7b9d0 : 0xffffff800aebbf0d
0xffffffa092e7baf0 : 0xffffff800aebc1f8
0xffffffa092e7bb60 : 0xffffff800b6bee1a
0xffffffa092e7bbd0 : 0xffffff800afefa76
0xffffffa092e7bd50 : 0xffffff800afef75d
0xffffffa092e7bda0 : 0xffffff800ae61a2f
0xffffffa092e7bdc0 : 0xffffff800b41ef11
0xffffffa092e7bee0 : 0xffffff800b47800b
0xffffffa092e7bf40 : 0xffffff800b569ceb
0xffffffa092e7bfa0 : 0xffffff800ae621f6

Had kernel panic yesterday on Waterfox G3.0.1

panic(cpu 0 caller 0xffffff80179efa76): Kernel trap at 0xffffff8017e18cfe, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000000000, CR3: 0x00000002727951d3, CR4: 0x00000000003626e0
RAX: 0x0000000000000000, RBX: 0xffffff86c7c55c20, RCX: 0x0000000000000000, RDX: 0x0000000001000000
RSP: 0xffffffb0db58bec0, RBP: 0xffffffb0db58bf40, RSI: 0xffffff86cb9b3890, RDI: 0x0000000000000000
R8: 0x0000000000000000, R9: 0x0000000000000000, R10: 0x0000000000000000, R11: 0x0000000000000000
R12: 0xffffff86cb9b37c0, R13: 0xffffff86d744ac80, R14: 0x0000000000000035, R15: 0xffffff86cb9b3890
RFL: 0x0000000000010246, RIP: 0xffffff8017e18cfe, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x0000000000000000, Error code: 0x0000000000000000, Fault CPU: 0x0, PL: 0, VF: 0

Backtrace (CPU 0), Frame : Return Address
0xffffffb0db58b8e0 : 0xffffff80178bc66d
0xffffffb0db58b930 : 0xffffff80179ff073
0xffffffb0db58b970 : 0xffffff80179ef6aa
0xffffffb0db58b9c0 : 0xffffff8017861a2f
0xffffffb0db58b9e0 : 0xffffff80178bbf0d
0xffffffb0db58bb00 : 0xffffff80178bc1f8
0xffffffb0db58bb70 : 0xffffff80180bee1a
0xffffffb0db58bbe0 : 0xffffff80179efa76
0xffffffb0db58bd60 : 0xffffff80179ef75d
0xffffffb0db58bdb0 : 0xffffff8017861a2f
0xffffffb0db58bdd0 : 0xffffff8017e18cfe
0xffffffb0db58bf40 : 0xffffff8017f69ceb
0xffffffb0db58bfa0 : 0xffffff80178621f6

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

Since I've updated to macOS 11.1, I got no problems with Firefox Nightly so far even with hardware acceleration and container tabs turned on

Glad to hear it. Feel free to reopen the bug if it comes back.