Sonoma 14.1 - Kernel Panic - Bridge OS 8.1 (21P1069) - bug_type : 210 - Macbook Pro 13' 2020 keeps restarting several times

That is an odd Kernel Panic which is referencing BridgeOS which is the special OS used by the T2 security chip. You can try a DFU firmware "Revive" to see if that makes any difference. This should not affect the data on the internal SSD, but I highly recommend you make sure you have a good backup anyway just to be safe.

Since the issue appears during power on or waking from sleep, it seems like the hardware is not powering on properly. I see this a lot with SSD failures, but hard to know if that is the case here. The panic mentions "ANS2" which stands for "Apple NAND Storage version 2". This panic log is hard to interpret.

You can try running the third party app EtreCheck and posting it here to see if there are any more clues.

My guess is the Logic Board is bad and will need to be replaced. I've been seeing a lot of Logic Board failures on my organizations T2 Mac (most have been with the 2019 models).

You can try running the Apple Diagnostics to see if any hardware issues are detected, but it rarely detects problems especially ones like you are describing, but it never hurts to try it.

Make sure you have a good backup while you can since if I'm correct, then the Logic Board could fail at any time.

You have posted panic report digest at the end showing about that same panic with memory-related words in it in groups of two or three, more than 20 times in three days. plus two more ProxiedDeviceBridge

I think you should contact support, and ask for a specialist to read your panic reports. They can read anything on the forums if you tell them the title and/or your avatar. No need to send them huge uploads unless they ask for something specific. But they do not take our word for any conclusions, having their own more-rigorous processes.

[In my opinion] you likely have a hardware issue, possibly related to RAM memory or caches inside the processor.

[in my opinion] if you go directly to the Genius Bar, they will run diagnostics overnight and return your Mac in the morning, "no fault detected"

Things that will make Apple support pause:

seeing VMWare fusion, which can be invasive.

is it completely up-to-date?

daisy disk software is not SIGNED.

do they have a more recent version that is signed?

Yes you have a lot of audio software added, but if a problem there, it should just make your sound Apps crash, and nothing more. (and its not)

Etrecheck says you do not have a backup -- making a local disk-based backup should be TOP PRIORITY !!

you have a few dubious items I can see:, CCleaner, Mac Cleaner, and little snitch.

BUT those panic reports look to be a serious Hardware issue. the words inside are all references to memory, memory maps and similar :

2023-11-13 00:32:23 Kernel Panic (3 times)

Details:

panic(cpu 0 caller 0xfffffff027c5e424): ANS2 Recoverable Panic - asser

t failed: [11991]:MD_UNCORR_ERR F2H 0 SL[1] ERR 0x4000000 HIX 72 SEG 3

475 TAG 334 OP 1 DRAM 47562 LBA 0x8e1dbb secOffset 0x2 dp[23490048, 10

00002, 8e1dbb, 3b99] mmu[98506b, 2cedf000, 5ff08, 2884000, 1002c500, 4

305b00, 40f] - PreNa

Panicked task 0xffffffdfeefa85d0: 0 pages, 233 threads: pid 0: kernel_

task

NB>> you may need Apple Support to get a specialist to read those reports. technicians at the genius bar do not read them

Official Apple Support

I agree with @Grant. Unfortunately it is harder to convince Apple to replace the Logic Board because Apple does not train their techs to look at or interpret any logs. Hopefully the laptop will fail one of Apple's service diagnostics.....unfortunately these laptops don't always fail the diagnostics even when macOS is reporting all those errors.

As @Grant points out, it is best if the laptop has Kernel Panics with a clean install without any third party apps installed since Apple will take that as a hardware failure just as if it had failed the diagnostics.

You can create a new APFS volume (give it a custom name) and install macOS to the new APFS volume. Creating a new APFS volume will allow you to install macOS next to the existing installation without interfering with it and without requiring you to resize anything. The new APFS volume will share the same storage pool as your main OS, but will be in its own separate area....you have more than enough room for just the barebones OS so you can try testing it to see if you can recreate the Kernel Panics on demand with the new clean OS so you can show the Apple techs how it occurs with a clean OS. This will allow you to use the laptop, but also allow you to test the clean install.

If failures are more pronounced when booting or waking the system, then it further indicates a hardware issue. And it may help you to reproduce the Kernel Panics on demand with a clean when demonstrating the issue to the Apple techs when booting to a clean OS.

Just out of curiosity, try running DriveDx and posting the complete text report here using the "Additional Text" icon which looks like a piece of paper. I'm just curious if the SSD's health report shows anything of interest. Unfortunately the health report for Apple SSD's is very sparse.

Hopefully with all those Kernel Panics the Apple service diagnostics will show a problem so that Apple will replace the Logic Board. You can try running the consumer version of the Apple Diagnostics to see if any hardware issues are detected.

If the diagnostics don't report any issues, then It will really help your case with Apple if you would perform a clean install of macOS onto this laptop which involves erasing the drive followed by installing macOS. Test the clean install to see if you still receive any Kernel Panics which would indicate a hardware issue (test before installing any third party apps & before restoring from a backup). Unfortunately Apple does not train their service techs to read Kernel Panic reports or to do any independent testing other than running diagnostics which rarely detect problems.

If a clean install doesn't produce any Kernel Panics, then try migrating your user account(s) from a backup. I would not migrate/restore any of the applications. Instead, manually reinstall your applications with the most recent versions and avoid the apps @Grant has mentioned since they are the ones most likely to cause problems.

Definitely agree with @Grant on all his points. A backup is the most important thing to do especially if the SSD may be failing since any SSD can fail at any time without any warning signs. I think you have probably been given dozens of warnings with those Kernel Panics since they all appear very similar. Like @Grant, I believe this is most likely a hardware failure.

Post the Kernel Panic log here using the "Additional Text" icon which looks like a piece of paper.

I'm not familiar with that website, so I'm not going to click on that link when Apple provides the means of posting the information here.

You may also want to run the third party app EtreCheck and post the report here as well so we can examine it for clues.

If you use the "Additional Text" icon on the forum editing toolbar, then you can paste the log. This is the way Apple expects people to post large logs here. If the log happens to have an exorbitant amount of text because a portion is in binary format , then just edit that part out since it would be useless. I don't know what the character limit is for the "Additional Text" field, but I haven't seen anyone not be able to post a Kernel Panic log with it.

Hey there @catsausage - I see you went through this headache not too long ago. I'm experiencing pretty much the exact same behavior with my 2019 16" MBP, except it only restarts one time(as opposed to 10-15) after waking from sleep at least 3 out of 5 times. How did you end up resolving in the end? Hardware replacement?

xas187 wrote:

Hey there @catsausage - I see you went through this headache not too long ago. I'm experiencing pretty much the exact same behavior with my 2019 16" MBP, except it only restarts one time(as opposed to 10-15) after waking from sleep at least 3 out of 5 times. How did you end up resolving in the end? Hardware replacement?

You should start your own thread so we can assist you since your issue may be different than the OP's issue since your crashes are less frequent. When you create your own thread, make sure to run EtreCheck and post the report so we can examine it for clues.

You should also run the Apple Diagnostics to see if any hardware issues are detected.

catsausage wrote:

Mine stopped doing it since I explained that I kept it on for about 2 weeks, to be honest with you, at this point I am suspecting a faulty spy software that stopped the moment I started this thread …. even if I sound paranoic … it is weird that nothing helped, not reinstalling everything and no other solution, so basically it just stopped acting like that

I can appreciate that this sort of problem can disappear for a while.

But in general, it (or something like it) will be back.