From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0A3CC1FB3 for ; Sat, 29 Mar 2025 02:06:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743214020; cv=none; b=emQDjndrXtgVSH/EP8ga/e0VCVBjWARKC8U/sx1zFgtQZmk7c3fgcbhu0wbskMqjVc34lt57rJqXU/6WrRRQSrAokqIXlQOaeuxmLcRLSrSt31KoaTu36W8JC5AbffalJWfn0LwvgHC4TlvToBHp6dE/ZKYMjZef+HZp1tCOMlM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743214020; c=relaxed/simple; bh=FGfh1w5NNAwOa7YGzQ31Zdi/MT5RLje1ttsCq9kxKUc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=l0FC5edLGjuDmyW1a14QWokpUGu/7WCsL2ZQXKjLm3GbxD4tZy08aBt2cGcm4a1pwN2FHghm47qeUhbdt/ggckS2LzJswG3mi7IUB8Aa0rtU+EY6ZYmXUtF+vHJ2ZLbagjuq2rgUdTSKs8CoC5kaavgIUOoIaV/e07tuVmvjiIA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=D3SDMQs5; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="D3SDMQs5" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1743214017; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=n+I0PCjfoO4Xb5NRpmwsp6+T9WL+XxdVxoqaSDpoe1c=; b=D3SDMQs5bCUwCc52OrzlXT7VMeLBjbYIJPKjH6mmq8UCpL0DJj/oLxjaycE7eK5xjL/ZNp U+qGnYMbe5OxhQWOadYU4q1DukPIgktth2BgqnfKphP+AFhpzBwjwVZmCIpgAHzzm/EG6a y60gVnQ6E9d1C6BmETJrBHFMRjRQZ44= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-172-pDcAzlcGOa2cPzjBH5KviQ-1; Fri, 28 Mar 2025 22:06:53 -0400 X-MC-Unique: pDcAzlcGOa2cPzjBH5KviQ-1 X-Mimecast-MFC-AGG-ID: pDcAzlcGOa2cPzjBH5KviQ_1743214011 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 321441801A06; Sat, 29 Mar 2025 02:06:51 +0000 (UTC) Received: from fedora (unknown [10.72.120.4]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id B827B1956095; Sat, 29 Mar 2025 02:06:45 +0000 (UTC) Date: Sat, 29 Mar 2025 10:06:39 +0800 From: Ming Lei To: Valdis =?utf-8?Q?Kl=C4=93tnieks?= Cc: Stephen Rothwell , Jens Axboe , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org Subject: Re: next-20250327 - lockdep whine and USB issues at boot Message-ID: References: <8775.1743185453@turing-police> Precedence: bulk X-Mailing-List: linux-next@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <8775.1743185453@turing-police> X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 On Fri, Mar 28, 2025 at 02:10:53PM -0400, Valdis Klētnieks wrote: > Saw this during boot on a Dell Inspiron 5559 laptop. > > In addition, the external USB ports all gave up, rendering a USB mouse and a > USB external drive totally dead in the water. May or may not be related, I didn't > dig too far into it. It shouldn't be related to the warning. > > [ 40.842033] [ T953] io scheduler bfq registered > > [ 41.022391] [ T817] ====================================================== > [ 41.103507] [ T817] WARNING: possible circular locking dependency detected > [ 41.184587] [ T817] 6.14.0-next-20250327 #110 Tainted: G I T > [ 41.265700] [ T817] ------------------------------------------------------ > [ 41.346832] [ T817] (udev-worker)/817 is trying to acquire lock: > [ 41.427952] [ T817] ffff93a2c80ae9f0 (&q->elevator_lock){+.+.}-{4:4}, at: elv_iosched_store+0xe1/0x260 > [ 41.830112] [ T817] > but task is already holding lock: > [ 41.912022] [ T817] ffff93a2c80ae460 (&q->q_usage_counter(io)#10){++++}-{0:0}, at: blk_mq_freeze_queue_nomemsave+0x11/0x20 For this lockdep warning, feel free to try patch in the following link: https://lore.kernel.org/linux-block/Z-dUCLvf06SfTOHy@fedora/ Thanks, Ming