Anyone know what a Mutes or Spinlock (system items) are and whatthey do

Jun 15, 2018
Reaction score
Got this very cryptic error message report after my computer restarted suddenly.

I dont have c lue what went wrong, but was using Safari at the time.

regards, Sandy
Screen Shot 2019-01-05 at 9.41.59 am.jpg

Cory Cooper

May 19, 2004
Reaction score

Kernel panics can be caused by many things. Many times it is failing hardware, but System-level software drivers and extensions can cause them too.

I noticed from your log, that you are running macOS 10.13.3 High Sierra. I would recommend the following:
1. Make sure you have a current Time Machine or other backup of you data.
2. Update to macOS 10.13.6 High Sierra, which will update Safari as well.
3. Check if you have any Safari Extensions loaded, and let us know what they are.
4. Check if you have any Login Items, and let us know what they are.
5. Do you have any third-party utilities like MacKeeper or antivirus installed?
6. Feel free to post the entire panic log, so we can troubleshoot it further.


Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question