Time Machine backup fails on Monterey 12.3

I use a NAS (ReadyNAS 316), and this same issue happens to me after I installed 12.3 on one of my Macs, but worse because when "time machine" is started, it produces a kernel panic every time. I called Apple support, and after a total of 5 hours of (text and voice communication), they suggested that I "wipe the disk" and do a fresh install. I did this, and it still panics when I run "time machine." I even installed 12.3.1, and no luck; it still panics. The Mac that crashes is 1.5 years old and somewhat beefy,

iMac (Retina 5K, 27-inch 2020)

Processor 3.8 GHz 8-Core Intel Core i7

Memory 64GB

Graphics ADM Radeon Pro 5700 8GB

Panic details when "time machine" is run is,

panic (CPU 0 caller...."detailed object....can not be dirtied!!"

I use the same NAS (ReadyNAS 316) for my MacbookPro 14" (M1 Max) that runs 12.3 that I just purchased, and when I use "time machine," I have no issues.

We have 5 Macs on 12.3 and TM works perfectly on all 5.

TM needs a dedicated external hard drive. I suggest you try that ... HDD properly formatted with APFS and attached directly to your Mac via a simple passthrough adapter if you need one.

I just upgraded to 12.4 from 12.3 on the Mac that is having this problem and I still get the same panic when I connect to the NAS using timemachine. Note, using timemachine with a disk attached locally works fine. I don't understand how a NAS could cause timemachine to make the system reboot. My other Mac is working fine using timemachine with the NAS.

panic(cpu 6 caller 0xffffff8004c1597a): "deleted object @ 0xffffff9083ea6550 can not be dirtied!! (flags: 0x40000019)\n" @obj.c:4409

Panicked task 0xffffff9544530670: 278 threads: pid 0: kernel_task

Mac OS version:

21F79

Again, everything worked fine before I upgraded to 12.3, nothing changed on the NAS which has up-to-date firmware.

I opened a ticket with Apple and they acknowledge the problem.

One last thing, when I use "time machine" on the IMac with a local disk drive via USB, everything works fine.

Same issue here 2018 MacBook Pro running on 12.3.1 and as soon as I start a Time Machine backup the system crashes with a panic:

panic (CPU 0 caller...."detailed object....can not be dirtied!!"