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Level 1

16 points

Why are kernel panics now happening?

I have had kernel panics on my M1 MBPro recently-- four in three weeks. It seems to happen after waking from sleep, and in every case the first few lines of the crash report include the phrase: "busy timeout[0], (60s): 'AppleAPFSMediaBSDClient'"

I can't find much on this. Is anyone else experiencing this? It only started to happen after I updated the OS from 11.6.1 to 11.6.2 -- is this coincidental?

I realize that Apple will tell me to just upgrade to Monterey. But I want to know whether there is anything else I can do to avoid this. Is it likely to be a software issue, or does it look like a hardware issue?

thanks in advance -- Nick

MB Pro (13-inch, M1, late 2020)

macOS Big Sur 11.6.2

MacBook Pro 13″, macOS 11.6

Posted on Jan 3, 2022 5:33 PM

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32 replies

Feb 2, 2022 7:31 AM in response to KitCarson62

I am running a clean, separate Monterey install to gauge whether or not it's worth upgrading to, so I tested if the bug is still there with another TM drive. So far I can't reproduce the bug using the same procedures that cause Big Sur to crash, so I think it is fixed. I'm planning to upgrade at the end of the week unless something comes up.

Feb 2, 2022 7:43 AM in response to TeamShazrock

An alternative is go back to Big Sur 11.6.1, despite from a security and features point of view is not the best choice.

I wonder also if a Time Machine backup made using a later macOS version (i.e. 11.6.3) can be used with no issues.

Feb 2, 2022 8:20 AM in response to KitCarson62

I have been told by Apple support that it is not possible to downgrade Big Sur, at least on Apple Silicon. According to Bombich’s CCC help page, if you upgrade to Monterey there is a workaround: https://bombich.com/kb/ccc6/macos-big-sur-known-issues

Nick Dew Author

Level 1

16 points

Feb 15, 2022 6:42 PM in response to hnhl

Well, thank you to everyone who replied -- I have upgraded Big Sur from 11.6.3 to 11.6.4 and the bug is still there as before. Replicable: Time Machine backup to an APFS drive, eject drive, sleep, then wake from sleep and 60 seconds later there's a KP.

I don't want to upgrade to Monterey yet because I use third-party software that is about to have problems with it (OneDrive, Dropbox) and I want to wait to see how that shakes out. So I think the "just upgrade to Monterey" solution is not really good enough.

pimmoral

Level 1

8 points

Mar 2, 2022 10:12 AM in response to Nick Dew

I have the same experience with my 14" M1 mbpro. What I have found is that kernel panic occurs after waking if a QEMU linux VM was running before sleep. Something in the QEMU virtualization stack is triggering the kernel panic every time it wakes from sleep. Are you using QEMU with UTM or with Docker?

-Pedro

MBPro 14, 2021

Monterey 12.1

Apr 4, 2022 11:00 AM in response to Nick Dew

Don't know if this applies, but I was having issues with kernel panics when closing Photoshop. If you're using any Adobe products, or if you suspect it's another app, try granting it Security permissions (System Preferences / Security & Privacy / Privacy Tab) in both Accessibility & Full Disk Access.

Nick Dew Author

Level 1

16 points

May 17, 2022 7:47 PM in response to Nick Dew

Just in case anyone is still following this: today I updated to Big Sur 11.6.6 and the problem is replicable exactly as before. That is: connect an external drive formatted to APFS; eject (dismount) the volumes; disconnect the drive from the USB port; put Mac to sleep; wake Mac from sleep; kernel panic occurs after approx 1 minute. So clearly nobody at Apple cares about this issue!

Jan 26, 2022 7:20 PM in response to TeamShazrock

Well, folks, macOS 11.6.3 is now released. I cannot update yet, so has anyone updated and looked to see if this bug is fixed?

Jan 27, 2022 10:36 AM in response to TeamShazrock

Just updated. The bug is still there. Exact same error, exact same process.

hnhl

Level 1

0 points

Jan 28, 2022 1:21 AM in response to TeamShazrock

The same for me. 11.6.3 does not fix this.

Feb 2, 2022 7:28 AM in response to Nick Dew

Hi all

Is there anyone in the community can confirm that installing Monterey solved the problem ?

Thank you

Feb 2, 2022 8:01 AM in response to KitCarson62

I just upgraded to Monterey and have not been able to reproduce the bug. It looks like it is fixed.

R_Cooper

Level 1

8 points

Feb 2, 2022 9:47 AM in response to KitCarson62

Hi,

I have upgraded to Monterey and it appears not to have the same bug. No crashes so far.

manuelzi

Level 1

8 points

Feb 5, 2022 1:26 AM in response to Nick Dew

Upgrading from Big Sur 11.6.2 to Monterey 12.2 resolved the kernel panic issues for me as well.

hnhl

Level 1

0 points

Feb 7, 2022 10:43 PM in response to manuelzi

I got tired of the afs bug and updated from 11.6.3 to 12.2. After the update I've had no crashes.

Why are kernel panics now happening?