Big Sur crash restart loop after update

App & System Services Core OS
Luismartinez OP
Created Aug ’20
Replies 50
Boosts 0
Views 24k
Participants 49
So after updating my MacBook Pro 16 inch , it starts up , then once I log on , it just completely turns off and reboots 




Code Block 
panic(cpu 9 caller 0xffffff800189dc5a): "Inconsistent OOL/copyout size on 0xffffff86e59a7ba0: expected 44, got 0 @0xffffff86e604bf48"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-7195.40.44.151.1/osfmk/ipc/ipc_kmsg.c:5032
Backtrace (CPU 9), Frame : Return Address
0xffffffa0ee73b9b0 : 0xffffff80018be6ad 
0xffffffa0ee73ba00 : 0xffffff80019fef13 
0xffffffa0ee73ba40 : 0xffffff80019ef96a 
0xffffffa0ee73ba90 : 0xffffff8001863a2f 
0xffffffa0ee73bab0 : 0xffffff80018bdf4d 
0xffffffa0ee73bbd0 : 0xffffff80018be238 
0xffffffa0ee73bc40 : 0xffffff80020b9f1a 
0xffffffa0ee73bcb0 : 0xffffff800189dc5a 
0xffffffa0ee73bd10 : 0xffffff800189df92 
0xffffffa0ee73bda0 : 0xffffff800189e4b1 
0xffffffa0ee73bde0 : 0xffffff80018b126e 
0xffffffa0ee73be60 : 0xffffff80018b1d2a 
0xffffffa0ee73bef0 : 0xffffff80019d45e3 
0xffffffa0ee73bfa0 : 0xffffff8001864216 
Process name corresponding to current thread: endpointsecurityd
Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev chunklist-security-epoch=0 -chunklist-no-rev2-dev





Replies  50
Boosts  0
Views  24k
Participants  49
jmlewis OP
Aug ’20
I have the same issue. I am able to use the laptop in Safe Mode but it is super slow.
mvonborstel OP
Aug ’20
I also have the same issue. I had to backup all my files via airdrop in safemode and then send it back to Catalina to fix it. Going to hold off until beta 6 comes out since this seems to be a thread today
ReliantWV OP
Aug ’20
You're not alone. I'm experiencing a similar if not the exact same error on a MacBook Pro 16. I've found a similar entry on the Macrumors forums - no one seems to know what the exact cause is or what a workaround or fix might be.
Jmbq OP
Aug ’20
Same!!!! Nothing can be done.... fan starts to go into hyperdrive and then just restarts
apugel OP
Aug ’20
Same here fan starts to go into hyperdrive and then just restarts
Rnc1223 OP
Aug ’20
I have the same issue on a MacBook Air 2017. I was able to do a restore and it reverts back to beta 4 without losing anything
RockYu OP
Aug ’20
I have the same issue after have upgraded from big sur beta 4 to beta 5.
Tecmobility OP
Aug ’20
Same here on a Mac mini. I recovered using my last backup .
I wonder if there is anyway to reinstall the beta 4 waiting for the beta 6
JEPP OP
Aug ’20
Same issue. Lasts about a minute and chews through battery (on a Macbook Pro 15), then crashes. In safe mode everything is extremely slow.
Sshay OP
Aug ’20
Same. Updated now in kernel panic loop
Mike007 OP
Aug ’20
I have the same problem. Any suggestions to solve it? Safe mode crashes in the similar way.
thorup OP
Aug ’20
Same issue for me. Mac book pro 16 inch, reboot after entering pass word on start up. Safe mode has the same issue, but happen's faster.
_1_DaVe_1_ OP
Aug ’20
It appears to be caused by Symantec/Norton. @RM9981 outlines a potential solution here: https://developer.apple.com/forums/thread/657905.

It didn't work for me, but it doesn't hurt to give it a try. My guess is that Apple is going to have to release an update on their end that forcibly removes whatever Symantec remnant tries to start the endpointsecurityd process. Kind of like what they did with Zoom around a year ago. If you can, report the issue to Apple in the Feedback Assistant; right now it won't let me log in so I can't get a report in. Hopefully if as many people as possible report the problem they can fix it quickly.
Cronometer OP
Aug ’20
Same issue, had norton antivirus installed but had uninstalled it a few weeks ago, but perhaps it left some tendrils here. Safe mode works enough to post here, but outside of safe mode it's a constant panic after login.
Rnc1223 OP
Aug ’20
This is what worked for me. I did a clean install of Catalina. Once installed and working good, I downloaded the Big Sur public beta profile. I installed that and installed the latest Public beta. Once installed and working properly, I then downloaded and installed the Big Sur Developer Beta profile and installed Big Sur beta 5. It started up perfectly with no kernel panic.
kulvik OP
Aug ’20
Same problem when upgrading from beta 4 to beta 6. Have no one solved this yet? :(
booksmartben OP
Sep ’20
Same issue. Any resolutions yet?
7raveler OP
Sep ’20
Here’s what worked for me.
unplugged all TB and other accessories.
reset smc.

neither of those two had an effect on their own.

turned off Mac. Held right shift key when powering back on. Startup disk app loaded.

unlocked mac hard drive with password from that app. Clicked restart button from that app.

Mac rebooted and didn’t kernel panic and after two password prompts I was back in business.

hope this helps someone
rellect OP
Oct ’20
Had the same issue, I tried the usual things and it didn't work. Finally this is what solved it for me:

  1. While mac is ON, long press on shutdown button until mac is turned off

  2. Now press again to turn on (this will start recovery mode)

  3. From the top bar choose Startup disk

  4. Choose the disk and unlock it with the password

  5. Click the restart button

After that I could log in as usual
Macabe13 OP
Oct ’20
Was having same issue but rellect process worked.
Might think twice about installing beta 9
caker15 OP
Oct ’20
solution posted by rellect worked perfectly for me. Thanks!
Hk100 OP
Oct ’20
Thank you . Going to the recovery and then startup disk and unlocking it worked for me for beta 11 .
bkfoster OP
Oct ’20
Having this same issue since the latest public release (Beta 10 I believe.) On 2019 16" MacBook Pro, login and get about a third of the way on the status bar logging in then fan kicks in and Mac abruptly turns off. I can login via Safe Mode and also can pull up Recovery Mode. Tried a clean install of Big Sur beta and still have the same issue. Tried the Recovery Mode -> Unlock Startup disk trick a few times and still no go. Reset SMC and others to no avail (just took longer before it inevitably flared the fans and shut off.) Anyone have any other solutions that worked? Been without the use of that MacBook Pro for a week now (safe mode is super slow).
RomainDreidemy OP
Oct ’20
Hi all,

I have the same issue and when I go in the recovery mode, I just have a Grey page.

Please can you help me ?

Thanks
sumitarora OP
Nov ’20
Happening same with my Macbook Pro 16.
No trick worked for me, any solution?
Big Sur crash restart loop after update
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