I'm suddenly having an issue with kernel panics.  It started once I tried to copy an iMovie project file to ZFS volume.  I can replicate it every time, copy file, crash within seconds.  Also I tried to zip the project file and copy the zipped file to ZFS, now I can't even leave the ZFS disks attached to the mac, it keeps crashing while connected.  Later today I'll connect it to LInux and remove the zip file and see if that helps.
This is the backtrace that comes up, if that helps. Just the top portion, but I can attach the full text if it helps.
Sat Apr  6 14:16:01 2019
*** Panic Report ***
panic(cpu 4 caller 0xffffff7f9247324e): blkptr at 0xffffff920dab7730 has invalid TYPE 56
Backtrace (CPU 4), Frame : Return Address
0xffffff927273b8d0 : 0xffffff80119aeb0d 
0xffffff927273b920 : 0xffffff8011ae8653 
0xffffff927273b960 : 0xffffff8011ada07a 
0xffffff927273b9d0 : 0xffffff801195bca0 
0xffffff927273b9f0 : 0xffffff80119ae527 
0xffffff927273bb10 : 0xffffff80119ae373 
0xffffff927273bb80 : 0xffffff7f9247324e 
0xffffff927273bca0 : 0xffffff7f9372f32a 
0xffffff927273bd00 : 0xffffff7f9375d1ea 
0xffffff927273bd40 : 0xffffff7f9375d772 
0xffffff927273bd80 : 0xffffff7f936c5b7b 
0xffffff927273bde0 : 0xffffff7f936a914a 
0xffffff927273be10 : 0xffffff7f9369dadc 
0xffffff927273be50 : 0xffffff7f937629f8 
0xffffff927273beb0 : 0xffffff7f9375e74f 
0xffffff927273bf10 : 0xffffff7f9247ef16 
0xffffff927273bfa0 : 0xffffff801195b0ce 
      Kernel Extensions in backtrace:
         net.lundman.spl(1.8.1)[F931881B-FB27-3712-8C57-4DF33E9CCD48]@0xffffff7f92471000->0xffffff7f93665fff
         net.lundman.zfs(1.8.1)[2A85E7BD-467C-3D6D-B43D-588BDB8A9EC1]@0xffffff7f93696000->0xffffff7f939a0fff
            dependency: com.apple.iokit.IOStorageFamily(2.1)[9B2E7108-AA17-3998-BF41-4B1297F455E5]@0xffffff7f93666000
            dependency: net.lundman.spl(1.8.1)[F931881B-FB27-3712-8C57-4DF33E9CCD48]@0xffffff7f92471000
			
		