Re: block, bfq: NULL pointer dereference in bfq_rq_pos_tree_lookup()

From: Mike Galbraith
Date: Mon May 03 2021 - 08:42:07 EST

On Mon, 2021-05-03 at 11:52 +0200, Paolo Valente wrote:
> Hi Mike,
> I've waited a little bit before replying, because I've worked on a dev
> patch series, for debugging another crash. I'd like to use
> this series for your failure too, as the OOPS you report
> unfortunately does not ring any bell :(
> So, could you please try to apply this patch series? If it doesn't
> apply, I'll rebase it.

This bug isn't deterministic, but I can wedge your set into my devel
trees, and see if anything falls out.