panic(cpu 0 caller 0xfffffe0010a5572c): "busy timeout[0], (60s): 'AppleAPFSMediaBSDClient'"

mac OS developers, please fix it, this bug exists for more than a year, it's really annoying!

Using latest mac OS Big Sur for now: 11.7.4 on MBA M1


Steps to reproduce:

  1. Connect APFS formatted external disk to your Mac with Time Machine configured on both.
  2. Wait for disks appears in the system
  3. (optional) open any folder on external disk
  4. Disconnect external disk
  5. Enter your Mac into Sleep mode in menu or by closing lid
  6. Wait for some time (1 minute for example)
  7. Wake it up, enter password
  8. Do smth (or not), anyway after 60s after waking it up, it would crash with pink screen and panic message after automatic reboot.


Here it is:

panic(cpu 0 caller 0xfffffe0010a5572c): "busy timeout[0], (60s): 'AppleAPFSMediaBSDClient'"

Debugger message: panic

Memory ID: 0x6

OS release type: User

OS version: 20G1120

Kernel version: Darwin Kernel Version 20.6.0: Fri Dec 16 00:34:59 PST 2022; root:xnu-7195.141.49~1/RELEASE_ARM64_T8101


Thread for reference:

busy timeout[0], (60s): 'AppleAPFSMediaBS… - Apple Community


I created this thread because problem still not resolved.

I send a report every time my Mac crashing (sometimes for 5 times a week) — and Apple Developers doing absolutely nothing for more than a year.


MacBook Air 13″, macOS 11.7

Posted on Mar 17, 2023 8:23 AM

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1 reply

Mar 18, 2023 5:22 AM in response to b1rdy

b1rdy wrote:

mac OS developers, please fix it1. , ...

I send a report every time my Mac crashing (sometimes for 5 times a week) — and Apple Developers doing absolutely nothing for more than a year.


You are not addressing Apple on this website. Follow the instructions in claire504's reply to that Discussion, reproduced here for your convenience:


After the steps you've already taken, the best step from here would be to have an authorized technician examine your Mac further. You can get help finding options with either of the two links below:
* Apple - Find Locations - Location Selector
* Contact Apple Support

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

panic(cpu 0 caller 0xfffffe0010a5572c): "busy timeout[0], (60s): 'AppleAPFSMediaBSDClient'"

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