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Tue, 22 Jul 2025 05:14:19 -0700 (PDT) Message-ID: <8acbc346-98f8-44fc-9675-0c3a7da87d21@kernel.dk> Date: Tue, 22 Jul 2025 06:14:18 -0600 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: 6.15/regression/bisected - lockdep warning: circular locking dependency detected when plugging USB stick after ffa1e7ada456 To: Hillf Danton , Mikhail Gavrilov Cc: thomas.hellstrom@linux.intel.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, Ming Lei , regressions@lists.linux.dev References: <20250722005125.2765-1-hdanton@sina.com> Content-Language: en-US From: Jens Axboe In-Reply-To: <20250722005125.2765-1-hdanton@sina.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit 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. -- Jens Axboe