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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250723011614.2812-1-hdanton@sina.com>
Date: Wed, 23 Jul 2025 09:16:13 +0800
From: Hillf Danton <hdanton@...a.com>
To: Jens Axboe <axboe@...nel.dk>
Cc: Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>,
	thomas.hellstrom@...ux.intel.com,
	linux-block@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Ming Lei <ming.lei@...hat.com>,
	regressions@...ts.linux.dev
Subject: Re: 6.15/regression/bisected - lockdep warning: circular locking dependency detected when plugging USB stick after ffa1e7ada456

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?