Kernel panic on shutdown

[_-_Specter_-_]

Hello, I'm getting kernel panics whenever I shutdown or restart my Mac. This happens _only_ on shutdown and restart. I recently changed the language on my Mac, and then the problems started happening, but I'm not sure it's from the language change. I'm using a 27-inch iMac from 2017, with Big Sur 11.1.

Kernel panic log:
panic(cpu 1 caller 0xffffff8014cbf016): initproc exited -- exit reason namespace 2 subcode 0x4 description: none uuid info: 0x114953000 uuid = <dea51514-b4e8-3368-979b-89d0f8397abc> 0x1086fe000 uuid = <6083e0d1-1507-3c83-a7f9-269261462d97> Thread 3 crashed RAX: 0x00007fff20184c2a, RBX: 0x000070000e2179b0, RCX: 0x00007fff2019c98d, RDX: 0x0000000000000002 RSP: 0x000070000e217998, RBP: 0x000070000e2179a0, RSI: 0x0000000000000390, RDI: 0x00007fc5635046e0 R8: 0x00000000004f4005, R9: 0x0000000000000001, R10: 0x0000000000000000, R11: 0xfffffffffffffe30 R12: 0x00007fc563405eb0, R13: 0x0000000000000001, R14: 0x0000000000000001, R15: 0x000070000e217aa0 RFL: 0x0000000000010207, RIP: 0x00007fff20196347, CS: 0x000000000000002b, SS: 0x0000000000000023 Thread 0: 0xffffff86c4580bf0 0x00007fff202e2622 0x00007fff2017751b 0x0000000000000000 Thread 1: 0xffffff86cf9869b0 0x00007fff202ffa7a 0x00007fff201667c7 0x00007fff2016c5fe 0x00007fff2016d0cb 0x00007fff20176c5d 0x00007fff2030e499 0x00007fff2030d467 0x0000000000000000 Thread 2: 0xffffff86c94b0bf0 0x00007fff202de586 0x00007fff201841fc 0x00007fff2017384c 0x00007fff201734ac 0x0000000108731ea4 0x000000010870b051 0x000000010870ae36 0x00007fff201667c7 0x00007fff20173605 0x000000010870a54f 0x00007fff201667c7 0x00007fff20169195 0x00007fff20179550 0x00007fff2016c4a7 0x00007fff2016d0cb 0x00007fff20176c5d 0x00007fff2030e499 0x00007fff2030d467 0x0000000000000000 Thread 3: 0xffffff86c94ad000 0x00007fff20196347 0x00007fff20183404 0x00007fff20176ae0 0x00007fff2030e499 0x00007fff2030d467 0x0000000000000000 Thread 4: 0xffffff86c94ad890 0x00007fff202de53e 0x00007fff2030d467 0x0000000000000000 Thread 5: 0xffffff86c94ae120 0x00007fff202dd368 0x0000000108732360 0x00007fff201731d5 0x00007fff201667c7 0x00007fff2016c5fe 0x00007fff2016d0cb 0x00007fff20176c5d 0x00007fff2030e499 0x00007fff2030d467 0x0000000000000000 Mac OS version: 20C69 Kernel version: Darwin Kernel Version 20.2.0: Wed Dec 2 20:39:59 PST 2020; root:xnu-7195.60.75~1/RELEASE_X86_64 Kernel UUID: 82E2050C-5936-3D24-AD3B-EC4EC5C09E11 System model name: iMac18,3 (Mac-BE088AF8C5EB4FA2) System shutdown begun: YES Panic diags file available: YES (0x0)

 

[martinewski]

I've been having the same issue since I upgraded to Big Sur on its launch date.

 

[chscag]

Hello, I'm getting kernel panics whenever I shutdown or restart my Mac. This happens _only_ on shutdown and restart. I recently changed the language on my Mac, and then the problems started happening, but I'm not sure it's from the language change. I'm using a 27-inch iMac from 2017, with Big Sur 11.1.

Nothing definitive in the KP report that I can see. Try starting up your iMac in Safe Mode. If it panics in Safe Mode, then it may be due to hardware but right now it appears software related.

BTW, I have that same machine and changing languages does not have any effect.

 

[_-_Specter_-_]

Nothing definitive in the KP report that I can see. Try starting up your iMac in Safe Mode. If it panics in Safe Mode, then it may be due to hardware but right now it appears software related.

BTW, I have that same machine and changing languages does not have any effect.

I've been doing a few tests. No panic in safe mode, no panic when shutting down from the login screen without having logged in, no panic with a new user account.

 

[chscag]

I've been doing a few tests. No panic in safe mode, no panic when shutting down from the login screen without having logged in, no panic with a new user account.

That tells us that there is something running on startup that the system doesn't like or agree with and is causing the KPs. Start off by eliminating all startup apps and kexts. You can add them back in one by one until the KP occurs again.

The no panic with a new user account likewise points to something thats running and causing the panics in your original account.

 

[_-_Specter_-_]

That tells us that there is something running on startup that the system doesn't like or agree with and is causing the KPs. Start off by eliminating all startup apps and kexts. You can add them back in one by one until the KP occurs again.

The no panic with a new user account likewise points to something thats running and causing the panics in your original account.

I have no startup apps, and all the kexts are loaded in the second user account as well. Maybe a brew service or cron job? What's weird is, logging out works fine, but then shutting down from the login screen causes a panic

 

[_-_Specter_-_]

I've managed to fix this by disabling the Hack font and some LaunchDaemons. Not sure which one of the two.