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=-8.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 4A994C433E2 for ; Fri, 28 Aug 2020 09:35:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 245C02075B for ; Fri, 28 Aug 2020 09:35:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="xrmlci1X" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728690AbgH1Jfb (ORCPT ); Fri, 28 Aug 2020 05:35:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38376 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728269AbgH1JfZ (ORCPT ); Fri, 28 Aug 2020 05:35:25 -0400 Received: from mail-ua1-x944.google.com (mail-ua1-x944.google.com [IPv6:2607:f8b0:4864:20::944]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 58C1CC06121B for ; Fri, 28 Aug 2020 02:35:25 -0700 (PDT) Received: by mail-ua1-x944.google.com with SMTP id z12so171014uam.12 for ; Fri, 28 Aug 2020 02:35:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=/mdittT6+6EzCIerCsP+eMrYewGCwnIzPurZ3euQ7cw=; b=xrmlci1XQklPdv8VwdCziv8Ar/UxceOi05ImtRTPFIMg7t76W0VOXgbBWgcSxJjQkG 7OJJGmztUHDLhPlStrGS21cIy5G6Pdq52sx8L7JibwmnsKieNyqGFvCapPJ8yi2BDPDJ CgTRJM8yNZAoZXqD+jmroylm/y1t+0HhlTzN1rbouTe7W23Peslwhhfnh4ywe1FFVZic O/JgK5vKgaqEaa9wlPsvOpPgYkM9103S/GERZ5qOGtuZhDMhq6PMFsYao4NsTuvl/BK4 lSouNSllEvVZ6zGY0cl/i5I6yOn8sKy4YCKbn5aOCd8rM+cQQDHY1BfGR/48IyyGYfg5 QugA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=/mdittT6+6EzCIerCsP+eMrYewGCwnIzPurZ3euQ7cw=; b=iL7Cagb7zezwo/SNsCdAA8vZik3absiS9MktVya1KnuvMfQwmlYfVQeQVurCMn5I0+ OqiXWJ0LTtJFFTskrFRUUnES8iX9Rm8RaqVgcQDJotC1mxApzSCRUbc28Geuptionh0+ QDJ2YIAdJPHp801UN3ZcUWw1GHuAdY+HbKGfyJY4Ow3hNV6TL0JScL+uvBymxC6x7Civ 8nRGEjoYaoOwPG3wZEJOT3JrNggdQQMVRs6m8absO9ALb8bPTtg36BTPKFXtLSwdZpUY CbZDBPCfmZl1+6V4eWqLbN7kvc7AxWzSf3uYftCYueVYuIesPzj+sg+IZdL2Kd+I3CXu fcNw== X-Gm-Message-State: AOAM5339kebioN3D121dnew8EYtL0VhvCay8YIQgTFxJH01cVfEBAMrJ N3XCEFm2yD/1Ka8n8XdEdHNnIT3vfrYhc/4iHIVi5w== X-Google-Smtp-Source: ABdhPJzxNEeZfoY+k3gp0uBoTm4yCYE5kPlcV9PGhfGkgvhiqDyqVKsddEc6lWq8Z8xFJlOpwC9vsbIVbRpsPgjPmsM= X-Received: by 2002:ab0:3114:: with SMTP id e20mr380470ual.104.1598607324469; Fri, 28 Aug 2020 02:35:24 -0700 (PDT) MIME-Version: 1.0 References: <20200827090813.fjugeqbb47fachy7@vireshk-i7> <20200827101231.smqrhqu5da6jlz6i@vireshk-i7> In-Reply-To: From: Ulf Hansson Date: Fri, 28 Aug 2020 11:34:47 +0200 Message-ID: Subject: Re: Kernel panic : Unable to handle kernel paging request at virtual address - dead address between user and kernel address ranges To: Naresh Kamboju Cc: Viresh Kumar , Stephen Rothwell , Arnd Bergmann , Rajendra Nayak , open list , Linux-Next Mailing List , linux-clk , linux-mmc , lkft-triage@lists.linaro.org, John Stultz , Daniel Lezcano , Michael Turquette , Stephen Boyd , Lars Povlsen , madhuparnabhowmik10@gmail.com, Anders Roxell Content-Type: text/plain; charset="UTF-8" Sender: linux-next-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org On Fri, 28 Aug 2020 at 11:22, Naresh Kamboju wrote: > > On Thu, 27 Aug 2020 at 17:06, Naresh Kamboju wrote: > > > > On Thu, 27 Aug 2020 at 15:42, Viresh Kumar wrote: > > > > > > On 27-08-20, 11:48, Arnd Bergmann wrote: > > > > > > [ 3.680477] dev_pm_opp_put_clkname+0x30/0x58 > > > > > > [ 3.683431] sdhci_msm_probe+0x284/0x9a0 > > > > > > > > dev_pm_opp_put_clkname() is part of the error handling in the > > > > probe function, so I would deduct there are two problems: > > > > > > > > - something failed during the probe and the driver is trying > > > > to unwind > > > > - the error handling it self is buggy and tries to undo something > > > > again that has already been undone. > > > > > > Right. > > > > > > > This points to Viresh's > > > > d05a7238fe1c mmc: sdhci-msm: Unconditionally call dev_pm_opp_of_remove_table() > > > > > > I completely forgot that Ulf already pushed this patch and I was > > > wondering on which of the OPP core changes I wrote have done this :( > > > > > > > Most likely this is not the entire problem but it uncovered a preexisting > > > > bug. > > > > > > I think this is. > > > > > > Naresh: Can you please test with this diff ? > > > > I have applied your patch and tested but still see the reported problem. > > The git bisect shows that the first bad commit is, > d05a7238fe1c mmc: sdhci-msm: Unconditionally call dev_pm_opp_of_remove_table() > > Reported-by: Naresh Kamboju > Reported-by: Anders Roxell I am not sure what version of the patch you tested. However, I have dropped Viresh's v1 and replaced it with v2 [1]. It's available for testing at: https://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git next Can you please check if it still causes problems, then I will drop it, again. Kind regards Uffe [1] https://lkml.org/lkml/2020/8/28/43