Received: by 2002:ab2:6309:0:b0:1fb:d597:ff75 with SMTP id s9csp937014lqt; Fri, 7 Jun 2024 03:20:14 -0700 (PDT) X-Forwarded-Encrypted: i=3; AJvYcCXqoNgnT+uabADAwEeZfWP1XIzGj3qoZqFfd2+6b0AOKs1MZLm1j2JLPNtUlrxDExDp5TM5+kGvzFyB1orls3n7hQI0FIGcgq5zPIxijg== X-Google-Smtp-Source: AGHT+IFG4ZSNG0NtQMRKm05P3UI/WmxptFzmxD1D8BFo2WudnRnpkp17PledM3xDRm98A9CBwW29 X-Received: by 2002:a05:6a20:914c:b0:1af:d017:c13e with SMTP id adf61e73a8af0-1b2f9ca4662mr2204560637.41.1717755614211; Fri, 07 Jun 2024 03:20:14 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1717755614; cv=pass; d=google.com; s=arc-20160816; b=hOfADA1aqnZbNhH/P8g15Hjp5Rzw2WRMLxQVPbrfYCSR67ozwPMhiHPIiv03uwnCUn g65Fs41epC9h5S7t478ydjdGe8XgePXLzI/f7K9ptoONBLPqcI6zxXyvA9267XFG6bCB jR32h4YPlJmu9dEiigHhkFG+2HI4WRlI7LK63YqxVIuHBmFPmdRrs6yDk28e0pkTi1Y/ KDwFIZrPYplMLMH1XXBam3W8VySb9QCXgW7wOYkYXZ3my1759zDWbHwEEp8b12IMEAjN zlgVjeKlHR/H8wbpGqjgBk68/Ufk6mDvnYI5q0idABbWUrThRxBV1K/Dh9eivzdxiT1g DNsA== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:date:message-id:dkim-signature; bh=S/k0UOD2XzT93LwcNZDcZVp/aAS4aZSAyvm1MCnMlto=; fh=YzsT7fHEvkz1MgAP69rM6VzE/fLGVypMvKJrahY+cOI=; b=TqP2kWothVOvDUu4mxsWFD3Ovv7yB4q3aEGIsdWK3XGN9HJ07hdNYNG1zbAl9+2YM7 I56XFdadBdF7tL/Hgkwwnd8g47H/XvQBcOINTqYg0RfEjNhKDFdnMI5eH3Ezqk32ynWD 38oUYG7yVDnftDbbunaiTlY7MAAsQUTbb2LGV9MitiPBWOMXHL3oN1V9C+e1iEhi+ecj lXdVO7zTZhER4IRHh99usLNjV6n7dqYBnqdTbpNbxOgOpXF/3mjhsWbT4HVECLmjLWc6 4fhDAEXjIvZQ/0lf+ptiQ7qXYPK70CmibSNC/ZTonxnCAZ7wgibFytgyrgIqYAZ1Asm5 OW/g==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=PfDtFfM2; arc=pass (i=1 spf=pass spfdomain=redhat.com dkim=pass dkdomain=redhat.com dmarc=pass fromdomain=redhat.com); spf=pass (google.com: domain of linux-kernel+bounces-205806-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-205806-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org. [2604:1380:45e3:2400::1]) by mx.google.com with ESMTPS id 98e67ed59e1d1-2c2806bcf02si4510438a91.106.2024.06.07.03.20.13 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Jun 2024 03:20:14 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel+bounces-205806-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=PfDtFfM2; arc=pass (i=1 spf=pass spfdomain=redhat.com dkim=pass dkdomain=redhat.com dmarc=pass fromdomain=redhat.com); spf=pass (google.com: domain of linux-kernel+bounces-205806-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-205806-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id C55BA286394 for ; Fri, 7 Jun 2024 10:20:13 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id B251F15CD71; Fri, 7 Jun 2024 10:20:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="PfDtFfM2" Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 89E7515B14A for ; Fri, 7 Jun 2024 10:20:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717755602; cv=none; b=nUhM8MxHSIlp3C47rhP0kHjvFACRAUU56dWBpUGdPiVAl6ytCzKsWwqfdznlRTYTztJBQ3hhZxnNohYPDb3/x2+zW5MBD2zQWUcfJJqgeWaCP8KT2YOKRR3m2oXemhVaAcoWqwYAD8pL7Ems2qCqWEFDigPQ7lqoDMBB1KYExuc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717755602; c=relaxed/simple; bh=vTEZCukUMXcbXJO9IWA8dOisP930Ku2NFFH6hnITE2Q=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=pXqWU01hozoU1Qi3y8eA1k/gmLL6kPizbsI0CbyTqniJgN3dS+znDYelkf6HYf6jZoDil4za/IVwQj6YIeJXw3drARVJMdh6kB5F9kS5n8YH5GtYADanC7fQ6LiCBPkl4SUCvYaVFtkOMpFTC3D5uyE42cstAgDT3xu0D18XkR4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none 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=PfDtFfM2; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1717755600; 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=S/k0UOD2XzT93LwcNZDcZVp/aAS4aZSAyvm1MCnMlto=; b=PfDtFfM2eG+cuDutfDMP6KR7ZkH5nt6fQIE4Nptr7BcITM0+QIjW4MbQ/9mWWQdq4ZsiIo oRe6Ot2HC+7z8ToHKybl4xOg5OZXwMY0nwrfwwik1hnytlAoXX5+oxYzfB1FULWfcIJY7z JAPrlR4l+swxMPzhD3pQcd14h/tPpcE= Received: from mail-ej1-f72.google.com (mail-ej1-f72.google.com [209.85.218.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-107-Ggh4ah1cNOWCfa-n_i2gpw-1; Fri, 07 Jun 2024 06:19:59 -0400 X-MC-Unique: Ggh4ah1cNOWCfa-n_i2gpw-1 Received: by mail-ej1-f72.google.com with SMTP id a640c23a62f3a-a6c82d264ccso89255366b.2 for ; Fri, 07 Jun 2024 03:19:58 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1717755598; x=1718360398; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=S/k0UOD2XzT93LwcNZDcZVp/aAS4aZSAyvm1MCnMlto=; b=KCOwPN7kC3hJH60dHOrTk04mHUJRJ3C+PcLNIctn7IBeuYHyB4Y7kAA8Fjv2fAkoO5 AN6WMuE2v1GcJYq9hS49a8ffn6xaIW9xsnZIhQzh4sZD1JgJyKQu8J6kSoeY8LX00MwC NXahbzPjxNvlifIim8rcjwljIyI1DJeMogy53zA3SyNyekc+eC5MOWjk6MhVgwYP8925 LR8fZ+HuRRg2b4av3KGcw31PtN/Y1RkRJp3QQzBW+uGmCHQ9zmTEBQ0oBLBs0NmyZs+Q jjAGhkUeSpxkXyvB/LXmTbTqOCXDxmIKUZ94C8PlK5WXYW0qPNqJk8L83ZVJPZsSJdXG CY9A== X-Forwarded-Encrypted: i=1; AJvYcCX6SVFmvuH2rs7r5+WfYDZTcORooaKh8lHFPEY9wIoDSdU2OGM9wxZ1yFatC7gLN/QR6PztSrGR4n5imZXb7VFF3PkG72tVj+wUUP40 X-Gm-Message-State: AOJu0YwZWryTZrViO+TxcPXMxikWR8s2BIiGfnfvWXQTts2f7YULC9rW uorCFZfRVo+st+ocsNXDFxULl4sjO+T1GqA2kRfQZ1zcx4af2aZgMsAESWowO/zQlNvO4VThUcU 8zBBU7ilAcOsODMhqpp/YcJGqk8NDKzM+coAI5vhAIdVeJef6lxQiB2rO32yJ2A== X-Received: by 2002:a17:906:1115:b0:a68:c6e5:3574 with SMTP id a640c23a62f3a-a6cdc0e40cemr136190066b.75.1717755597983; Fri, 07 Jun 2024 03:19:57 -0700 (PDT) X-Received: by 2002:a17:906:1115:b0:a68:c6e5:3574 with SMTP id a640c23a62f3a-a6cdc0e40cemr136188466b.75.1717755597601; Fri, 07 Jun 2024 03:19:57 -0700 (PDT) Received: from ?IPV6:2001:1c00:c32:7800:5bfa:a036:83f0:f9ec? (2001-1c00-0c32-7800-5bfa-a036-83f0-f9ec.cable.dynamic.v6.ziggo.nl. [2001:1c00:c32:7800:5bfa:a036:83f0:f9ec]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a6c806eaedesm223566166b.119.2024.06.07.03.19.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 07 Jun 2024 03:19:57 -0700 (PDT) Message-ID: <5d037003-a90b-4607-8eb6-6fdd5824e373@redhat.com> Date: Fri, 7 Jun 2024 12:19:56 +0200 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: Hung tasks due to a AB-BA deadlock between the leds_list_lock rwsem and the rtnl mutex To: Jakub Kicinski , Andrew Lunn Cc: Linux regressions mailing list , Pavel Machek , Lee Jones , Linux LEDs , Heiner Kallweit , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, davem@davemloft.net, edumazet@google.com, pabeni@redhat.com, johanneswueller@gmail.com, "Russell King (Oracle)" , Genes Lists References: <9d189ec329cfe68ed68699f314e191a10d4b5eda.camel@sapience.com> <15a0bbd24cd01bd0b60b7047958a2e3ab556ea6f.camel@sapience.com> <42d498fc-c95b-4441-b81a-aee4237d1c0d@leemhuis.info> <618601d8-f82a-402f-bf7f-831671d3d83f@redhat.com> <01fc2e30-eafe-495c-a62d-402903fd3e2a@lunn.ch> <9d821cea-507f-4674-809c-a4640119c435@redhat.com> <20240606063902.776794d4@kernel.org> Content-Language: en-US, nl From: Hans de Goede In-Reply-To: <20240606063902.776794d4@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi, On 6/6/24 3:39 PM, Jakub Kicinski wrote: > On Thu, 6 Jun 2024 15:12:54 +0200 Andrew Lunn wrote: >>> So it has been almost a week and no reply from Heiner. Since this is >>> causing real issues for users out there I think a revert of 66601a29bb23 >>> should be submitted to Linus and then backported to the stable kernels. >>> to fix the immediate issue at hand. >> >> Agreed. > > Please submit.. Done: https://lore.kernel.org/linux-leds/20240607101847.23037-1-hdegoede@redhat.com/ Regards, Hans