Mac OS 10.15.4: Random restarts due to panic(cpu 1 caller

Hello

i have had 2 new 16” MBP since March 2020 both had random freeze/restart. Yes, like you it happened when I was doing nothing special on Word, just typing. And lastest update not saved. But also happened while in Safari and other programs. No rhyme or reason.

i returned both for full refund.

maybe next year I will try again. Meanwhile I have a MB Air

It’s really unfortunate that you came across this issue with 2 separate MacBook Pro’s. I’m just gonna see what the Apple care advisors say, at this point. It’s funny that no Apple advisors give a crap to help out in this discussion. I really shouldn’t blow thousands on a laptop just to avoid using it. We’ll see. I’ll keep y'all updated with the latest info.

I think Apple just did:

TECHNOLOGY ALERTApple Announces Transition to In-House Chips for Macs

Apple is breaking up with Intel. The company will transition to its own computer processors, in a long-anticipated shift that ends a 15-year partnership.

For me, this has given me a week of no random restarts for now as well.

Although this is not THE solution, it gives some peace.

Looks like when the random restarts start, they gradually increase in frequency.

This re-install maybe resets it.

At least, it gives me some peace of mind for this week.

I definitely agree that reinstalling MacOs fixes the issue to a certain point. At this point, I’m just going to hope that MacOs Big Sur will fix all of my issues. I don’t know when it will come out, but I know that it is going to be an important update. I love how it looks and that change will be enough for me to be willing to open my laptop again. I have AVOIDED using my MacBook Pro for weeks and that update will change that. Time to play the waiting game. Lol.

I have also three external displays connected. From time to time the restart only happen when I am not working at all. And the cooling fans are at low rpm. When there is some CPU consuming process and the Cooling fans are loud, than the restart never occurs. I have a suspicion that it is related to the fact, there is some overheating happening and the fans are not going to spin faster to cool down the CPU. And somehow with the external displays it is connected also. And because of that the fans are controlled by the T2 chip, the issue must be in there.

I have the 15" 2019 mid MacbookPro.

Same here. Happened today. Closed the lid and when I came back an hour later my Mac had restarted.

Log:

panic(cpu 1 caller 0xfffffff01ea513dc): x86 CPU CATERR detected

Debugger message: panic

Memory ID: 0x6

OS version: 17P5300

macOS version: 19F101

Kernel version: Darwin Kernel Version 19.5.0: Tue May 26 20:16:42 PDT 2020; root:xnu-6153.121.2~1/RELEASE_ARM64_T8010

Kernel UUID: 123C59BB-125A-31AF-A916-AAF729BE6BE8

iBoot version: iBoot-5540.125.4

secure boot?: YES

x86 EFI Boot State: 0x16

x86 System State: 0x0

x86 Power State: 0x0

x86 Shutdown Cause: 0x5

x86 Previous Power Transitions: 0x10001000100

PCIeUp link state: 0x89473614

Paniclog version: 13

Kernel slide: 0x0000000016a18000

Kernel text base: 0xfffffff01da1c000

mach_absolute_time: 0x18b7033c964

Epoch Time: sec usec

Boot : 0x5ef55ce9 0x000c3d69

Sleep : 0x5ef8317c 0x000aee0b

Wake : 0x5ef831bf 0x0001679b

Calendar: 0x5ef831e2 0x0007af91

Panicked task 0xffffffe00065fc00: 3521 pages, 221 threads: pid 0: kernel_task

Panicked thread: 0xffffffe0008f0548, backtrace: 0xffffffe00b0834b0, tid: 348

lr: 0xfffffff01e2e0764 fp: 0xffffffe00b0834f0

lr: 0xfffffff01e2e05c0 fp: 0xffffffe00b083560

lr: 0xfffffff01e3fb1e0 fp: 0xffffffe00b083610

lr: 0xfffffff01e8a962c fp: 0xffffffe00b083620

lr: 0xfffffff01e2dff28 fp: 0xffffffe00b083990

lr: 0xfffffff01e2e0280 fp: 0xffffffe00b0839e0

lr: 0xfffffff01f116934 fp: 0xffffffe00b083a00

lr: 0xfffffff01ea513dc fp: 0xffffffe00b083a30

lr: 0xfffffff01ea4280c fp: 0xffffffe00b083aa0

lr: 0xfffffff01ea44734 fp: 0xffffffe00b083b50

lr: 0xfffffff01ea41f44 fp: 0xffffffe00b083be0

lr: 0xfffffff01ea093a8 fp: 0xffffffe00b083c10

lr: 0xfffffff01e8175d8 fp: 0xffffffe00b083c50

lr: 0xfffffff01e816e5c fp: 0xffffffe00b083c90

lr: 0xfffffff01e8b4514 fp: 0x0000000000000000

Quick update from me. Since I have split USB devices and my 3 monitors (connected by a docking station) as well as putting the dock including charging the crashes have almost stopped. Before I had 2-3 a day now I had 1 in the last 8-10 weeks. I still don’t put my Mac to sleep and shutdown and startup in the morning and so far it works really well. I know it is sad to say this as this should just work but maybe you guys try to use both sides of the Mac for your devices and split video and USB from each other.

So dock including charging for my monitors to the right and USB devices extended with a USB hub to the left. No idea why but it helped a lot!

Ok I was too optimistic I guess...after normal work after a week of vacation the first day and another crash. Thanks Apple I love you...

panic(cpu 1 caller 0xfffffff01cbf53dc): x86 CPU CATERR detected

Debugger message: panic

Memory ID: 0x6

OS version: 17P5300

macOS version: 19F101

Kernel version: Darwin Kernel Version 19.5.0: Tue May 26 20:16:42 PDT 2020; root:xnu-6153.121.2~1/RELEASE_ARM64_T8010

Kernel UUID: 123C59BB-125A-31AF-A916-AAF729BE6BE8

iBoot version: iBoot-5540.125.4

secure boot?: YES

x86 EFI Boot State: 0x16

x86 System State: 0x0

x86 Power State: 0x0

x86 Shutdown Cause: 0x5

x86 Previous Power Transitions: 0x405060400

PCIeUp link state: 0x89271614

Paniclog version: 13

Kernel slide: 0x0000000014bbc000

Kernel text base: 0xfffffff01bbc0000

mach_absolute_time: 0x1ef17c491ea

Epoch Time: sec usec

Boot : 0x5ee8eb7b 0x000599dc

Sleep : 0x5eebcc9c 0x0007e0ad

Wake : 0x5ef990ac 0x0004d35c

Calendar: 0x5ef9e551 0x0007c36d

Panicked task 0xffffffe00067da00: 3280 pages, 220 threads: pid 0: kernel_task

Panicked thread: 0xffffffe000899a68, backtrace: 0xffffffe015f8b4b0, tid: 322

lr: 0xfffffff01c484764 fp: 0xffffffe015f8b4f0

lr: 0xfffffff01c4845c0 fp: 0xffffffe015f8b560

lr: 0xfffffff01c59f1e0 fp: 0xffffffe015f8b610

lr: 0xfffffff01ca4d62c fp: 0xffffffe015f8b620

lr: 0xfffffff01c483f28 fp: 0xffffffe015f8b990

lr: 0xfffffff01c484280 fp: 0xffffffe015f8b9e0

lr: 0xfffffff01d2ba934 fp: 0xffffffe015f8ba00

lr: 0xfffffff01cbf53dc fp: 0xffffffe015f8ba30

lr: 0xfffffff01cbe680c fp: 0xffffffe015f8baa0

lr: 0xfffffff01cbe8734 fp: 0xffffffe015f8bb50

lr: 0xfffffff01cbe5f44 fp: 0xffffffe015f8bbe0

lr: 0xfffffff01cbad3a8 fp: 0xffffffe015f8bc10

lr: 0xfffffff01c9bb5d8 fp: 0xffffffe015f8bc50

lr: 0xfffffff01c9bae5c fp: 0xffffffe015f8bc90

lr: 0xfffffff01ca58514 fp: 0x0000000000000000

Just an update on this issue from my perspective and final fix.

16" MacBook Pro with latest OS. Many reboots per week as others have noted.

I tried many of the suggestions here with reseting components, reinstalling the OS, etc, etc. None of which had a lasting effect. Finally got a ticket open with Apple through my company. Laptop spent 4 days at a local Apple authorized shop. They ran hardware diagnostics for 4 days and found nothing. Returned to me still randomly rebooting.

Then I had to ship the laptop back to my company IT group where they forwarded it to the local Apple repair facility in St Louis. After a week or so it appears that Apple replaced the system board and returned the laptop. Two weeks since and no reboots.

This definitely seems like an issue with the hardware on the 16" MacBook Pro anyway. Getting someone to do something about it seems to be the hardest part of the repair process.

Having this same issue on my new 16" Macbook Pro. Most of the time I just get a hard crash to a white screen with no error code. I've also had "Bad Magic" and just had "panic(cpu 0 caller 0xfffffff0142153dc): x86 CPU CATERR detected". This happens pretty much every day with no obvious cause. The last crash was waking up the laptop from sleep with nothing running but three tabs in chrome.

Should I take my laptop in?

Happened again today after a wipe and clean install so I can confirm that reinstalling OS is not a fix. I'm on Catalina 10.15.5

panic(cpu 1 caller 0xfffffff0243cd3dc): x86 CPU CATERR detected

Debugger message: panic

Memory ID: 0x6

OS version: 17P5300

macOS version: 19F101

Kernel version: Darwin Kernel Version 19.5.0: Tue May 26 20:16:42 PDT 2020; root:xnu-6153.121.2~1/RELEASE_ARM64_T8010

Kernel UUID: 123C59BB-125A-31AF-A916-AAF729BE6BE8

iBoot version: iBoot-5540.125.4

secure boot?: YES

x86 EFI Boot State: 0x16

x86 System State: 0x0

x86 Power State: 0x0

x86 Shutdown Cause: 0xc1

x86 Previous Power Transitions: 0x10001000100

PCIeUp link state: 0x89473603

Paniclog version: 13

Kernel slide: 0x000000001c394000

Kernel text base: 0xfffffff023398000

mach_absolute_time: 0x135c03852bb

Epoch Time: sec usec

Boot : 0x5ef9eb79 0x0000058a

Sleep : 0x5efc2398 0x0000245b

Wake : 0x5efc23cd 0x000dca1f

Calendar: 0x5efc2438 0x000eafc5

Panicked task 0xffffffe000780800: 3572 pages, 222 threads: pid 0: kernel_task

Panicked thread: 0xffffffe000b50a90, backtrace: 0xffffffe01657b4b0, tid: 332

lr: 0xfffffff023c5c764 fp: 0xffffffe01657b4f0

lr: 0xfffffff023c5c5c0 fp: 0xffffffe01657b560

lr: 0xfffffff023d771e0 fp: 0xffffffe01657b610

lr: 0xfffffff02422562c fp: 0xffffffe01657b620

lr: 0xfffffff023c5bf28 fp: 0xffffffe01657b990

lr: 0xfffffff023c5c280 fp: 0xffffffe01657b9e0

lr: 0xfffffff024a92934 fp: 0xffffffe01657ba00

lr: 0xfffffff0243cd3dc fp: 0xffffffe01657ba30

lr: 0xfffffff0243be80c fp: 0xffffffe01657baa0

lr: 0xfffffff0243c0734 fp: 0xffffffe01657bb50

lr: 0xfffffff0243bdf44 fp: 0xffffffe01657bbe0

lr: 0xfffffff0243853a8 fp: 0xffffffe01657bc10

lr: 0xfffffff0241935d8 fp: 0xffffffe01657bc50

lr: 0xfffffff024192e5c fp: 0xffffffe01657bc90

lr: 0xfffffff024230514 fp: 0x0000000000000000

And again. This seems a bit different and happened when on battery.

panic(cpu 0 caller 0xfffffff021e4bb8c): "void AppleEmbeddedPCIeUpLinkMgmt::_linkInterruptAction(IOInterruptEventSource *, int): " "A link timeout has been seen after 650000 microseconds and 49999 iterations."@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/AppleEmbeddedPCIeUpLinkMgmt/AppleEmbeddedPCIeUpLinkMgmt-102.120.1/AppleEmbeddedPCIeUpLinkMgmt.cpp:3986

Debugger message: panic

Memory ID: 0x6

OS version: 17P5300

macOS version: 19F101

Kernel version: Darwin Kernel Version 19.5.0: Tue May 26 20:16:42 PDT 2020; root:xnu-6153.121.2~1/RELEASE_ARM64_T8010

Kernel UUID: 123C59BB-125A-31AF-A916-AAF729BE6BE8

iBoot version: iBoot-5540.125.4

secure boot?: YES

x86 EFI Boot State: 0x16

x86 System State: 0x0

x86 Power State: 0x0

x86 Shutdown Cause: 0xec

x86 Previous Power Transitions: 0x10001000100

PCIeUp link state: 0x89473611

Paniclog version: 13

Kernel slide: 0x0000000019e00000

Kernel text base: 0xfffffff020e04000

mach_absolute_time: 0x25c0567e19

Epoch Time: sec usec

Boot : 0x5efc244e 0x00074f9d

Sleep : 0x5efc643e 0x0007d474

Wake : 0x5efc7007 0x000422a3

Calendar: 0x5efc7525 0x00007f98

Panicked task 0xffffffe000557000: 3417 pages, 221 threads: pid 0: kernel_task

Panicked thread: 0xffffffe000962f88, backtrace: 0xffffffe0109eb5b0, tid: 276

lr: 0xfffffff0216c8764 fp: 0xffffffe0109eb5f0

lr: 0xfffffff0216c85c0 fp: 0xffffffe0109eb660

lr: 0xfffffff0217e31e0 fp: 0xffffffe0109eb710

lr: 0xfffffff021c9162c fp: 0xffffffe0109eb720

lr: 0xfffffff0216c7f28 fp: 0xffffffe0109eba90

lr: 0xfffffff0216c8280 fp: 0xffffffe0109ebae0

lr: 0xfffffff0224fe8f8 fp: 0xffffffe0109ebb00

lr: 0xfffffff021e4bb8c fp: 0xffffffe0109ebb30

lr: 0xfffffff021e46af8 fp: 0xffffffe0109ebbc0

lr: 0xfffffff021c008a4 fp: 0xffffffe0109ebc10

lr: 0xfffffff021bff5d8 fp: 0xffffffe0109ebc50

lr: 0xfffffff021bfee5c fp: 0xffffffe0109ebc90

lr: 0xfffffff021c9c514 fp: 0x0000000000000000

Hi, I reinstalled MacOs Catalina (via cmd+R) and restored the original font system file with font book. I don't know if this is the cause of the problem but I have a lot of fonts installed on my computer and when I tried to validate them via Font Book it freeze/fan/restart (like 3 times a day). no more restart since, I'll let you know if the problem reappears.

+

I've had this problem for a few months on my work laptop, even before I upgraded to Catalina. One thing I noticed is that the screen would freeze for a bit, and then before the reboot the fans would go super high for a few seconds and then reboot. I started to wonder if it wasn't a hardware issue of some sort.

Long story short, my company sent me a new laptop, same model, same year, and I used my TimeMachine backup. The problem no longer occurs. I'm left with the realization that it must be a hardware issue.