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=-3.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 E302BC433DB for ; Sun, 17 Jan 2021 11:30:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 94BA12075A for ; Sun, 17 Jan 2021 11:30:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728426AbhAQLai (ORCPT ); Sun, 17 Jan 2021 06:30:38 -0500 Received: from mail-io1-f69.google.com ([209.85.166.69]:35601 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728633AbhAQL3q (ORCPT ); Sun, 17 Jan 2021 06:29:46 -0500 Received: by mail-io1-f69.google.com with SMTP id a1so24174761ios.2 for ; Sun, 17 Jan 2021 03:29:31 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=P/d1FEPC5iUSKICunGAq3DjPk63uAX3l81ePhtYb8N0=; b=JcMSlyZQfkvpm+DrASFZeWAZsAZvCN+pgB8hUnAZ5k7I+YqauyvVGYQJxZ6Cci/MOA pHEiHAMm4UgeibDDiBwFApSY4d/eupNR7FhCnyjI3F5mQKJ8/m39cyelbywnfff8bu+G 9j9jhfGqRjRkyfA1XmfcYwc7W0Q9Tf9p7NjdjseEQmLOxxzTBq8XVeL9xT2SSm6PvCkS fgPWhwqNPLaxhELGFwz4ZzL1gbkwe1zlxUpkNot2HB0LA31m1cyKRk6mTB6CZOcJ/jTk ga0c80JfXJMPaI5UGlxmgRcbzSCKzUqBlj6UJD7XcbbghDFR1xfd2/x5PNAlXhTtpxcY o54w== X-Gm-Message-State: AOAM533qFu2JiRa2Lsp8kmQdUcGRsPjjREWrKo0BeoB3pw9+iUhiab7s J9A9NFqticMiEWoh54kUVoABd7mWbniwp+pJBlKGiutLGuIi X-Google-Smtp-Source: ABdhPJx5wlmIgilxar3mPnrNpenLIHXRB8QsmmaXtwL5co5ZgqUuD4L6Odq9Is16TpVeRpNjHvh4NXgVuwKnnAtq+1m2JAFvsRlf MIME-Version: 1.0 X-Received: by 2002:a05:6e02:411:: with SMTP id p17mr8267172ilr.33.1610882945873; Sun, 17 Jan 2021 03:29:05 -0800 (PST) Date: Sun, 17 Jan 2021 03:29:05 -0800 In-Reply-To: <00000000000091111005b435456e@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c37b3a05b916e95a@google.com> Subject: Re: BUG: unable to handle kernel NULL pointer dereference in fbcon_cursor From: syzbot To: b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, daniel.vetter@intel.com, dri-devel@lists.freedesktop.org, george.kennedy@oracle.com, gregkh@linuxfoundation.org, jirislaby@kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, melissa.srw@gmail.com, natechancellor@gmail.com, sam@ravnborg.org, syzkaller-bugs@googlegroups.com, tzimmermann@suse.de, yepeilin.cs@gmail.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit ea40d7857d5250e5400f38c69ef9e17321e9c4a2 Author: Daniel Vetter Date: Fri Oct 9 23:21:56 2020 +0000 drm/vkms: fbdev emulation support bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=148e2748d00000 start commit: b3a3cbde Add linux-next specific files for 20210115 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=168e2748d00000 console output: https://syzkaller.appspot.com/x/log.txt?x=128e2748d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=6ea08dae6aab586f dashboard link: https://syzkaller.appspot.com/bug?extid=b67aaae8d3a927f68d20 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15cd8fe0d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17af5258d00000 Reported-by: syzbot+b67aaae8d3a927f68d20@syzkaller.appspotmail.com Fixes: ea40d7857d52 ("drm/vkms: fbdev emulation support") For information about bisection process see: https://goo.gl/tpsmEJ#bisection