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As always from Samsung, the most recent protected device against Root is J6+ (SM-J610F) & J4+ (SM-J415F)
In these devices Samsung provides an compressed kernel image into the boot image with gzip compressing method
preventing any patches that the Root needs to do to be able to get full permissions on the device.
The currently security exists in that kernel is defex protection that prevent a lot of applications to get Root access like [Titanium backup, ES File Explorer, FRep.....etc] and all other process that needs to run as Root in a custom paths.
In other devices we can bypass that security by just hexpatch directly to the kernel image but in this device the kernel image is compressed with gzip and has some restrictions prevent us from normal decompressing-recompressing.
So until get and add final solution to Magisk releases I compiled the stock kernel AS IS just disabled that security and Rooted with Magisk 17.3,
to make it a temporarily solution to fully Root that device.
The kernel doesn't have any features only disabled the security So it is Full stock with Root.
Flash with odin
Download Link: http://www.mediafire.com/file/adzqb5zbgrib946/J610FXXU1ARJ3_boot_8.1.0_AndroDef_Patch_v1.tar/file
DefKernel, Kernel for the Samsung Galaxy J6+
Kernel Special Features: Disabled defex, Rooted with Magisk 17.3
Last Updated 2018-11-06