I think some permission issue is there thats why it is rebooting with below message.
"AndroidRuntime START com.android.internal.os.ZygoteInit"
Try to give rw permission in init.rc as below and check.
on post-fs
# once everything is setup, no need to modify /
mount rootfs rootfs / rw remount
or somewhere else permission is missing.
share your init.rc file once.