[TruHobbyist]

This:

9 mgrasReleasePoolUserMemory[../graphics/MGRAS/mgras_dma.c: 584, 0xa80000002036d778]

may indicate non-working DMA, which is bad (no data transfer to/from the board).

And this:

<0>PANIC: KERNEL FAULT
    PC: 0xa80000002036d778 ep: 0xffffffffffffbc48
    EXC code:128, `Software detected SEGV '
    Bad addr: 0x3e8, cause: 0x8<CE=0
    <6>

may indicate an offset (0x3e8) into some struct field with a base address of 0 (NULL pointer <-). My educated guess: base addresses in a driver that are [not properly initialized] *AND* that are [not expected to fail] (these ones would get caught early on if the programmer really expected them) would be another symptom for a hardware fault.

Hopefully you can get a cheap replacement board in the forum and bring your Octane back to life.