My Mac keeps crashing with the same error:

a freed zone element has been modified in zone kalloc.64

Here are four crash reports I collected over a period of time.

It happens no matter what I'm doing, using the terminal, the browser, even when the screensaver is on.

I did try disabling avira real time scan (didn't exit) but that didn't stop the crashing.

This is driving me nuts, any ideas?


It's hard to say from the crash reports, the good news is that the issue may be related to software - a misbehaving third party kernel module may cause a kernel panic.

From you crash reports I see the following 3rd party module:


Try updating or removing avira, and see if that helps.

  • From what I'd read online i came to a similar conclusion (About it being 3rd party), hence disabling avira's active scan, I'll try an update and see if that works. – Thermatix Jan 11 '17 at 10:40
  • Ok, so, my mac hasn't crashed once since I uninstalled avira, I just wish that it didn't as I kind of don't like leaving my mac unprotected. – Thermatix Jan 13 '17 at 0:13

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