Re: [PATCH v2] block: Fix general protection fault in bio_integrity_map_user()

[Christoph Hellwig]

On Fri, Apr 03, 2026 at 03:03:00AM +0900, Sungwoo Kim wrote:
> Thank you for letting me know about blktests. I'm learning this and
> finding a way to reproduce this bug.
> If blktests is not suitable for reproducing this - it might be too
> early to think about this though - I have another idea to reproduce
> this.
> I can modify the pin_user_pages_fast() source to make it always
> partial success, so there are always some unpinned pages, which is a
> precondition of this bug.
> I'd like to ask for comments on this if it doesn't make sense.

Using the failure injection framework to reproduce this sounds like a
good idea.