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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6E23AC433FE for ; Tue, 5 Apr 2022 22:10:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346732AbiDEWM0 (ORCPT ); Tue, 5 Apr 2022 18:12:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59112 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1385663AbiDEOSn (ORCPT ); Tue, 5 Apr 2022 10:18:43 -0400 Received: from mail-yb1-xb30.google.com (mail-yb1-xb30.google.com [IPv6:2607:f8b0:4864:20::b30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7567524F14 for ; Tue, 5 Apr 2022 06:06:40 -0700 (PDT) Received: by mail-yb1-xb30.google.com with SMTP id z33so18718611ybh.5 for ; Tue, 05 Apr 2022 06:06:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=icqYVBohFnFJ5oHU+nslboiajB+SnOBn5hI9MsTTjY0=; b=mM//HIZLG1UpdS/W5Yy5oOygxhC5rnGWHf7ARQX2GQL3/AyfTsSmLzf/7ahtZbvV/+ J31q3h7p95gD1CyKhPFKcNo521T6GI58bHmk51/JZ/ETQBhQwlmXCaRzHBMHBAPNlzVR XHRBa2JLFjQv1Zhyds+BkZ1ahlUzMQdAjNbPU5qpI68wwYx9JU72nZv3D+OVeiG0V4vt SpnqJyUQPuFpU7ksk645ui5I94ErGcXSkPaFBTWQRggi9XmaTlRR4ak2+cuhzsRWgr73 HYQQMTkrPDn0nkSvoCWvGmGNU1rhhP9FqwyZJIwfa3C6ZMLU/Mk7CK0ZkwWC7vKGMyPq KlNw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=icqYVBohFnFJ5oHU+nslboiajB+SnOBn5hI9MsTTjY0=; b=FoBiXJxP/Cw+cewa5kk5mCyoROhCIBrvUvYexglsy4PQSiJctrjvPR1CGW2omx5g4Z Wwna/AloQpTyYxMjU6eRVcJkE0CFyWhS5XBW3jm7TpgmIRIqrpKLbJ/R1oh6J6XBXJpY R+Ll2B0UN25VITCfnvwvRXzNffwoOdwjfsR1u3K8sx31SVMzuX94fLH0EC6WbRrPa/D9 gxVmZtt7AWR/CG2XSIhH3IDcBxM6VzhobWmhi5sTtzHFsuhVd+LEV6Q3pfLaoqhjsnuL l7nDHuNzjsAm57arsqqbj/1tY6l7lXs1Df+BnLZY9Xlebll3yLWmlpAQezf1eZAdTtBv vxSw== X-Gm-Message-State: AOAM531uik5181a/0tlcE79PC5arnX+qP07URxn7WF7FWKxi20eGdXEe PpWA7T4T3+W3O7RN+QvmxeLNRJM7khOfeVQOJP4= X-Google-Smtp-Source: ABdhPJx/No+FakBF2W6Q7NjIKNVgdeDDfalX0yfWAyYloetqiOxeiYnltU3PjsBP6kphCcUsdhyh3MxaVwUUvRHe5o4= X-Received: by 2002:a5b:8c4:0:b0:633:e30a:8ade with SMTP id w4-20020a5b08c4000000b00633e30a8ademr2441915ybq.517.1649163999198; Tue, 05 Apr 2022 06:06:39 -0700 (PDT) MIME-Version: 1.0 References: <787d309d-f0b6-4f27-ed31-6811fd7c9293@suse.de> <1116eb70-516e-13b3-0697-4af00430bae8@suse.de> In-Reply-To: <1116eb70-516e-13b3-0697-4af00430bae8@suse.de> From: Sudip Mukherjee Date: Tue, 5 Apr 2022 14:06:03 +0100 Message-ID: Subject: Re: regression: NULL pointer dereference due to 27599aacbaef ("fbdev: Hot-unplug firmware fb devices on forced removal") To: Thomas Zimmermann Cc: Javier Martinez Canillas , Zack Rusin , Hans de Goede , Linus Torvalds , LKML Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Apr 4, 2022 at 8:46 PM Thomas Zimmermann wrote: > > Hi > > Am 31.03.22 um 10:25 schrieb Sudip Mukherjee: > > On Thu, Mar 31, 2022 at 8:07 AM Thomas Zimmermann wrote: > >> > >> > >> > >> Am 28.03.22 um 17:41 schrieb Sudip Mukherjee: > >>> Hi Thomas, > >>> > >>> We usually run boot tests with linux mainline HEAD commit almost every > >>> night on ppc64 qemu. And my tests had been failing for last few days. > >> > >> Could you please provide your kernel's config file? > > > > Thanks for taking a look at it. > > The config is attached. > > > > > > I was able to reproduce and fix the issue locally. Please have a look at > [1] for the patch. Thanks Thomas. And I can confirm it fixes the problem for me too. Tested-by: Sudip Mukherjee -- Regards Sudip