Mac M3 Max freezes, reboots, multiple kernel panics (Sonoma)

based on those additional panics, including multiple ECC errors, I agree with Etresoft that you have a hardware error.

If you wanted to save files, it may already be too late, but you can try to make a Time Machine or other backup.

There is a potential tragic flaw with going DIRECTLY to the Genius Bar:

if you take it to an Apple service provider first, they CAN run their diagnostics, which are a bit more comprehensive than the User diagnostics. In the very small amount of time they are run, “No faults detected” still does not mean “All is Well” but at least there are no detected GROSS problems. Unless they can find a fault, they will return your computer unchanged. Genius Bar technicians are NOT trained to read panic reports and computer logs.

When you present your computer at the Genius Bar with the expectation of a quote to repair it, you must generally meet these criteria:

• your Mac won't do anything

• your Mac fails diagnostics

• your Mac has a problem you can repeatably demonstrate on demand

one other oddball case:

• Apple online support has DIRECTED a Service Provider to replace specific components inside your Mac, such as the mainboard or display. Bring proof, such as case number.

if it does NOT fail diagnostics, that does NOT mean All is well.

Telephone Support:

The telephone support people are more likely to work with you. They will insist that you go through the motions to eliminate software issues. But when they get to the end of their list, Do NOT allow them to tell your it’s fine or there is nothing more they can do for you!

You should insist on having your problem escalated to a specialist. Specialists are more likely to actually read your panic other reports. If still no resolution, ask them to start a formal, tracked Bug Report on your behalf. If they think this might be a Hardware problem they can DIRECT an Apple service provider to swap things (likely mainboard) for a new one.

Apple support does appreciate what we do as Volunteers here on the forums. They can and should read what has already been posted. Be sure to tell them where they can read it. But they do NOT take our conclusions at face value -- they have their own more rigorous procedures they follow.

You MUST have a Trusted backup before submitting your Mac for service. if the mainboard is swapped out, the boot drive will be swapped out as well, and you will not get your files back.

Consider downloading and running this little "discovery" utility, Etrecheck. It changes NOTHING. Etrecheck was developed by a senior contributor here, and uses mostly system calls and simple tests to collect often-needed information.

it contains little tests for speeds of devices, CPU utilization, memory usage, energy usage and a digest of recent problems, in one easy to use package. it does not even need to be Installed. Because less can be learned when your Mac is running great, best time to run is when your problems are actually occurring, if possible.

if you follow the directions faithfully, its report (pre-laundered of all personally-identifiable information) can be "Shared" to the System ClipBoard, then Pasted into an ‘Additional Text’ window in a reply on the forums.

Use Etrecheck Pro for free:

http://Etrecheck.com

The amount of data you get can be daunting. If you POST your report, some Readers here are willing to look over those reports, and can provide valuable insights.

then start reply on the forums, click the "additional Text" icon, and PASTE

It's definitely a hardware failure. Backup your data. Then take the computer to an Apple Store or Authorized Apple Service provider.

the first is essentially a page fault that came out of WebKit, the heart of Safari. that should normally just crash safari, not the entire system. that indicates it is not a trivial or random problem.

The second is a MUCH more serious error, a memory protection error that occurred in the Secure Enclave Processor (SEP). The Secure Enclave controls encryption, passwords, login, and disk I/O to the boot drive, among other features.

more information is needed.