My MacBook Pro retina has a kernel panic error and keeps restarting

Yes, according to the kernel panic, your MacBook is having RAM issues - the macOS operating system regularly checks your system’s RAM to make sure it doesn’t have any issues. According to the kernel panic the issue is that it writes “0xdeadbeefdeadbeef” to your RAM, but when it goes to read it, it finds “0xdeadbaefdeadbeef”, which is different, so your Mac knows there’s a memory problem, and kernel panics because there’s an issue.

To confirm that RAM is the problem, I recommend running Apple’s own diagnostic, as well as a third-party program. To run your Mac’s inbuilt diagnostic, follow this guide: https://support.apple.com/kb/ph25696?loc... . To run a third-party memory test, follow this guide: http://osxdaily.com/2011/05/03/memtest-m... ). I suggest you run both tests a couple of times to verify.

Usually, RAM issues means taking one stick out to find out which one is the bad one, then replacing it, but unfortunately because this is a Retina model, the RAM is soldered directly to the logic board, and is hard to replace (it requires specialised equipment), so that option is out.

There is a slim chance that part of your OS could be corrupted , so if the memory test results seem good, I would recommend doing a backup of your Mac and doing a full wipe and reinstallation, and then seeing if it kernel panics again.

Otherwise, try taking it to Apple, and see if you can get a logic board repair or replacement, but it’s likely you’re going to have to fork out a decent amount of money for it. Where do you live? There could be repairmen around that might be able to repair your board or give you a new one for a cheaper price than Apple.