tmd3434 wrote:
panic(cpu 6 caller 0xffffff800ae05446): "a freed zone element has been modified in zone kalloc.128: expected 0xdeadbeefdeadbeef but found 0xffffff806d260850, bits changed 0x2152416fb38bb6bf, at offset 88 of 128 in element 0xffffff804d37b580, cookies 0x3f00115a102977c8 0x5352118b7958119"@/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-4903.278.28/osfmk/kern/zalloc.c:1206
in other forums, looks looks this might actually be a Norton anti-virus issue, they have had for a few years and have not fixed.
Uninstalling third party Anti-virus would be the first thing— it typically causes nothing but issue on the mac interferring with macs own built in: ref: macOS - Security - Apple https://www.apple.com/macos/security/
Kernel Panics are predominately caused by hardware faults or faulty third-party kernel extensions.
To trouble shoot further you can:
Try a SafeBoot https://support.apple.com/en-us/HT201262
Takes noticeable longer to get to the login screen, does a 5-15 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc. Login and test. Reboot and test as caches get rebuilt.
In Safe mode third party system modifications and system accelerations are disabled, it removes malware etc. . A reboot will put it back to normal mode.
This test will tell you if third party interference; extensions etc are not loaded in safe boot mode.
Test issue in another user (or guest user) account https://support.apple.com/en-us/HT204443
This will tell you if it a universal issue or isolated to your user/admin account.
If your Mac restarted because of a problem - Apple Support
