It's on a 32 gig Samsung SD card, which I've been buying because they seem to last longer than others. It was happening on an older card (which wasn't Samsung).OK. I though it could maybe come from the ethernet driver, but it looks like the "data abort" messages points more to a MMU issue ...
Networking hasn't been perfect. I see "cpsw0: device timeout" messages along with the occasional "Jul 13 18:04:49 kish sshd[581]: error: Received disconnect from 10.12.25.5: 2: Packet corrupt" disconnect notices.
Could also be an alignment issue. # sysctl -w machdep.printfataltraps=1 will turn dumping of the trap (exception frame) for fatal errors.
How do I make use of that? I'll try out an earmhf build on a Raspberry Pi tonight. Thanks, John