Comment 9 for bug 1500115

This affects me as well. Appears random. Usually after clicking a new message or some time after opening a link. I have a fully updated install of elementary OS Freya 64-bit

Here are the results of demsg:
[ 956.891516] traps: geary[11487] general protection ip:7f84d544f1f9 sp:7fffdfb03f90 error:0 in libwebkitgtk-3.0.so.0.22.16[7f84d4eb0000+1c95000]

I hope this helps.
Jay