Re: 6.15/regression/bisected - lockdep warning: circular locking dependency detected when plugging USB stick after ffa1e7ada456

From: Hillf Danton
Date: Tue Jul 22 2025 - 21:16:52 EST


On Tue, 22 Jul 2025 06:14:18 -0600 Jens Axboe wrote:
> On 7/21/25 6:51 PM, Hillf Danton wrote:
> > Try the diff that serializes elevator_change() with q->elevator_lock if
> > reproducer is available.
>
> Hillf, these seemingly random and not tested or thought through patches
> flung out in response to reports is not useful. It just wastes peoples
> time and resources.
>
Interesting, if you are right, so does the guy who created the deadlock, no?