My point was that we now gurantee that that the sense data is not a stack pointer an a driver can DMA to it. Now for BSG the sense data is "just" abused as reply, but the point still stands - we don't want to pass a possible stack pointer to drivers in a data buffer because we want to allow DMA to it.
That being said with your patch 4 that becomes a moot point as we'll now always dynamically allocate it. So maybe just reorder that to go first and we should be fine.
