https://bugzilla.redhat.com/show_bug.cgi?id=1531779 It might be something related that "x86/mm: Found insecure W+X mapping at address" message is printed at boot. Are you seeing "x86/mm: Found insecure W+X mapping at address" before hitting "BUG: unable to handle kernel NULL pointer dereference" ? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>