Re: [PATCH v3 3/7] dma-buf: Document RDMA non-ODP invalidate_mapping() special case

Jason Gunthorpe
2026-01-21T13:18:55Z

On Wed, Jan 21, 2026 at 10:17:16AM +0100, Christian König wrote:
> The whole idea is to make invalidate_mappings truly optional.

But it's not really optional! It's absence means we are ignoring UAF
security issues when the exporters do their move_notify() and nothing
happens.

Given this I don't want to loose the warning log either, the situation
needs to be reported..

Jason