Re: [PATCH] blkdev: Annotate struct request_queue with __counted_by_ptr

[Bill Wendling]

On Thu, Feb 19, 2026 at 9:24 AM Daniel Wagner <dwagner@xxxxxxx> wrote:
>
> On Thu, Feb 19, 2026 at 09:02:12AM -0800, Bill Wendling wrote:
> > It's normally fine to change the queue count just as long as either
> > (1) the pointer to the queues is also reallocated, or (2) the count
> > never goes over the original allocated value. (The second one is more
> > difficult to check, of course.) The bounds safety features that Apple
> > developed, and which are slowly being sent upstream, enforces (1).
> >
> > I'll run the other tests, but I'm not familiar with the blktests (I
> > downloaded them but haven't looked too deeply into them). Do you have
> > some pointers on how to run them with a newly built kernel?
>
> blktests has feature detection and every tests figures out, if it can
> run or not. It will print some info when it's not possible.
>
> The block test suite has at least a couple related tests:
>
> ./check block/029 block/040
>
> This suite wants null_blk driver.
>
> And for nvme/048 the fabrics parts needs to be used:
>
>   NVMET_TRTYPES="tcp" ./check nvme/048
>
> and the nvme-fabrics part nvme-tcp and nvmet-tcp.
>
> If you need the exact config option I can compile you a list.
>
Okay. I successfully ran the tests you indicated above and they passed.

-bw