bstream read out of bounds crash (val2)

[ripatel-fd]

Seen on a testnet node

bstream write-back cache read [000000097bcc2f80,000000097bcc3100)/384 is out-of-bounds (past [0000000000000000,000000097b98d000))

Indicates a bug with the accdb tile or the vinyl_io_ur write-back cache