From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F8BFC433E6 for ; Wed, 15 Jul 2020 09:02:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0D9622064C for ; Wed, 15 Jul 2020 09:02:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="kDh3emLi" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730109AbgGOJCu (ORCPT ); Wed, 15 Jul 2020 05:02:50 -0400 Received: from mailout2.w1.samsung.com ([210.118.77.12]:45636 "EHLO mailout2.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729856AbgGOJCt (ORCPT ); Wed, 15 Jul 2020 05:02:49 -0400 Received: from eucas1p1.samsung.com (unknown [182.198.249.206]) by mailout2.w1.samsung.com (KnoxPortal) with ESMTP id 20200715090247euoutp02b74c5aba2934f0396645e932918694af~h4ZOziQR70272902729euoutp02n for ; Wed, 15 Jul 2020 09:02:47 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout2.w1.samsung.com 20200715090247euoutp02b74c5aba2934f0396645e932918694af~h4ZOziQR70272902729euoutp02n DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1594803767; bh=rOtt1S2tLpV7KmVBOIjaAMcUlP/xKM8TZrQQvNLV85w=; h=Subject:To:Cc:From:Date:In-Reply-To:References:From; b=kDh3emLiWOEEnza7g3jncBibpte5i1LFWHa27Fa5IApdcX7mm09ADRwBNFepd8GNc L0gcHH5QkohKKjoJk0vwCEFC2O8JJVDF6oSjtLMd7k8mzQStE1osZH6kTw7g6vcTfs zMrqg3WCvPVKYE4EmiHbPHoLcuaNaArspVag35X4= Received: from eusmges3new.samsung.com (unknown [203.254.199.245]) by eucas1p2.samsung.com (KnoxPortal) with ESMTP id 20200715090247eucas1p2f8e6a287cc19a540620fdad4ef20f00c~h4ZOYHV4y2167121671eucas1p2P; Wed, 15 Jul 2020 09:02:47 +0000 (GMT) Received: from eucas1p1.samsung.com ( [182.198.249.206]) by eusmges3new.samsung.com (EUCPMTA) with SMTP id F0.B7.06318.636CE0F5; Wed, 15 Jul 2020 10:02:47 +0100 (BST) Received: from eusmtrp1.samsung.com (unknown [182.198.249.138]) by eucas1p2.samsung.com (KnoxPortal) with ESMTPA id 20200715090246eucas1p28b89f81cd6b5979677e2ff9f2fe52c0a~h4ZN9UPKj2380523805eucas1p25; Wed, 15 Jul 2020 09:02:46 +0000 (GMT) Received: from eusmgms1.samsung.com (unknown [182.198.249.179]) by eusmtrp1.samsung.com (KnoxPortal) with ESMTP id 20200715090246eusmtrp1b4d856a270c0bc108c3b462602fdc1f8~h4ZN5asmu2399223992eusmtrp1V; Wed, 15 Jul 2020 09:02:46 +0000 (GMT) X-AuditID: cbfec7f5-38bff700000018ae-36-5f0ec6360793 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 15.A8.06314.636CE0F5; Wed, 15 Jul 2020 10:02:46 +0100 (BST) Received: from [106.210.88.143] (unknown [106.210.88.143]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20200715090246eusmtip287b49e933ac303b20b32e1fabe502a24~h4ZNbGex-2995429954eusmtip2-; Wed, 15 Jul 2020 09:02:46 +0000 (GMT) Subject: Re: [PATCH v3 0/3] driver core: Add device link related sysfs files To: Saravana Kannan Cc: Greg Kroah-Hartman , "Rafael J. Wysocki" , LKML , John Stultz , Android Kernel Team , Linux Samsung SOC , Bartlomiej Zolnierkiewicz From: Marek Szyprowski Message-ID: <14bafea4-3cf3-91ea-2c82-c9917ac100f1@samsung.com> Date: Wed, 15 Jul 2020 11:02:47 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Transfer-Encoding: 7bit Content-Language: en-US X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrKKsWRmVeSWpSXmKPExsWy7djPc7rmx/jiDSZ5W2ycsZ7VonnxejaL M791LXZsF7G4vGsOm8WM8/uYLOZ+mcps0XXoL5sDh8e23dtYPRZsKvXYtKqTzePOtT1sHvvn rmH36NuyitHj8ya5APYoLpuU1JzMstQifbsEroy920ULnvJX9Oy+wNbA+Ieni5GTQ0LARGL3 xX6mLkYuDiGBFYwSH2++ZYVwvjBK/L3/mhHC+cwocfvlB6AyDrCWR7uZQLqFBJYzSix/XgtR 855RYlPDdxaQhLCAj8TUBQ/AikQEtCQ2XXvMAlLELHCaSWJF73FmkASbgKFE19suNhCbV8BO Ys3SCewgNouAqsSnp+vAmkUF4iTWv9zOBFEjKHFy5hOwBZwCgRJXuh+xgtjMAvIS29/OYYaw xSVuPZkP9o+EwDF2iQUX57BDPOoi8XTSMmYIW1ji1fEtUHEZidOTe1ggGpoZJR6eW8sO4fQw SlxumsEIUWUtcefcLzaQ/5kFNCXW79KHCDtK/Nz5mRUSLHwSN94KQhzBJzFp23RmiDCvREeb EES1msSs4+vg1h68cIl5AqPSLCSvzULyziwk78xC2LuAkWUVo3hqaXFuemqxcV5quV5xYm5x aV66XnJ+7iZGYGI6/e/41x2M+/4kHWIU4GBU4uG1mM4bL8SaWFZcmXuIUYKDWUmE1+ns6Tgh 3pTEyqrUovz4otKc1OJDjNIcLErivMaLXsYKCaQnlqRmp6YWpBbBZJk4OKUaGBMYd2wLULp8 JZ97z90rN/Mu3XCfe85dM0VO/er5qNzp07usJnPsjdkp0h6qXPgwNXbPbO0f5Xm9TmF6/1vV Pho8brJcOVd4/fyouTde5p2PXCkT08DgNe/iKhd/kW736FkGbG8MF21e2jaB5QW/T8dih4ub K5nmp0pv/Pb+sKVHbOheTU7to0osxRmJhlrMRcWJAP5MIoBIAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrBIsWRmVeSWpSXmKPExsVy+t/xe7pmx/jiDTo/yFtsnLGe1aJ58Xo2 izO/dS12bBexuLxrDpvFjPP7mCzmfpnKbNF16C+bA4fHtt3bWD0WbCr12LSqk83jzrU9bB77 565h9+jbsorR4/MmuQD2KD2bovzSklSFjPziElulaEMLIz1DSws9IxNLPUNj81grI1MlfTub lNSczLLUIn27BL2MvdtFC57yV/TsvsDWwPiHp4uRg0NCwETi0W6mLkYuDiGBpYwSR+5eYOxi 5ASKy0icnNbACmELS/y51sUGYgsJvGWUWN+jBWILC/hITF3wgAnEFhHQkth07TELyCBmgbNM EndmHGaFmLqWReLL063sIFVsAoYSXW8hJvEK2EmsWToBLM4ioCrx6ek6sEmiAnESy7fMZ4eo EZQ4OfMJC4jNKRAocaX7EdhFzAJmEvM2P2SGsOUltr+dA2WLS9x6Mp9pAqPQLCTts5C0zELS MgtJywJGllWMIqmlxbnpucWGesWJucWleel6yfm5mxiBsbjt2M/NOxgvbQw+xCjAwajEwzth Jm+8EGtiWXFl7iFGCQ5mJRFep7On44R4UxIrq1KL8uOLSnNSiw8xmgI9N5FZSjQ5H5gm8kri DU0NzS0sDc2NzY3NLJTEeTsEDsYICaQnlqRmp6YWpBbB9DFxcEo1MEZzK14tWp69b0m3rvSK PUJXjASWSaZsDj0XcTdt4u0dtW/frRVPL6gun+az2DvPxuGL/8Vp227NvKVQxcD2ZoeW6qKD vKlRx/R398zkto5d03WYR4t9y2/n1P/Mrwx50gMcs+fMUzyxVSmj2HKh74Y7DSue9b3Ni1+d wbKrsXv6N9Mst8IlDEosxRmJhlrMRcWJAOeDWg7bAgAA X-CMS-MailID: 20200715090246eucas1p28b89f81cd6b5979677e2ff9f2fe52c0a X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20200715082233eucas1p261d4c5133226b800c3656c9010aa5940 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200715082233eucas1p261d4c5133226b800c3656c9010aa5940 References: <20200521191800.136035-1-saravanak@google.com> <20200529123025.GA1710508@kroah.com> <20200710132305.GA1920995@kroah.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Saravana, On 15.07.2020 10:53, Saravana Kannan wrote: > On Wed, Jul 15, 2020 at 1:22 AM Marek Szyprowski > wrote: >> On 10.07.2020 15:23, Greg Kroah-Hartman wrote: >>> On Mon, Jul 06, 2020 at 03:45:02PM -0700, Saravana Kannan wrote: >>>> On Tue, Jun 16, 2020 at 8:45 PM Saravana Kannan wrote: >>>>> On Fri, May 29, 2020 at 5:30 AM Greg Kroah-Hartman >>>>> wrote: >>>>>> Looks semi-sane, but it's too close to the merge window at the moment >>>>>> for me to take this. If there's no objections by the time 5.8-rc1 is >>>>>> out, I'll queue it up in my tree for 5.9-rc1. >>>>> Another friendly reminder :) >>>> *nudge* *nudge* >>> Looks sane, given no objections, let's see what linux-next thinks about >>> it... >> linux-next is not very happy from this patchset... Starting from >> next-20200713 I see a few new issues on various Samsung Exynos based >> boards. Here are examples from Exynos4412-based Odroid U3 board (ARM >> 32bit, kernel compiled from exynos_defconfig): > Thanks for the bug reports. > >> BUG: sleeping function called from invalid context at >> kernel/locking/mutex.c:935 >> in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 12, name: kworker/0:1 >> 2 locks held by kworker/0:1/12: >> #0: ee8074a8 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: >> process_one_work+0x174/0x7dc >> #1: ee921f20 ((work_completion)(&sdp->work)){+.+.}-{0:0}, at: >> process_one_work+0x174/0x7dc >> Preemption disabled at: >> [] srcu_invoke_callbacks+0xc0/0x154 > Sigh... probably some SRCU screw up when the device link is deleted. > I'll look at it by the end of this week. If you don't mind, what SRCU > debug config caught this for you? That way, I can reproduce it on my > end. Just the options enabled in the default exynos_defconfig in current linux-next. I didn't check any particular options yet. Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland