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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 893BBC43381 for ; Thu, 21 Mar 2019 17:39:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6909C2190A for ; Thu, 21 Mar 2019 17:39:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728809AbfCURjW (ORCPT ); Thu, 21 Mar 2019 13:39:22 -0400 Received: from mail-it1-f199.google.com ([209.85.166.199]:39089 "EHLO mail-it1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728711AbfCURjB (ORCPT ); Thu, 21 Mar 2019 13:39:01 -0400 Received: by mail-it1-f199.google.com with SMTP id e124so2999430ita.4 for ; Thu, 21 Mar 2019 10:39:01 -0700 (PDT) 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=ltum6L1yStqaszX+G3ATCwsEMnljdk7XwCw4LQxUuso=; b=hP3R0nTDB7C42HO1bAuFUqMknbyq5aTgb+wc6yRXK/Z8scegc8SydYFFShu6toEjRT oWw5xFBDVLjIHPLtDRzZYLAPquVbRgtcScrR8K0UTEKC0mnhz2CiLfuBoi4fibbQaQfY n92kQnNuEytvLuwUs7ArD7ZHO2V792e1VZ031FV6mZxBnaaQDa+hGjS1Y3tzvBEnt9zV W1jBWWn0J8EqBMnDINOGQoGL+POkxVi7k0CBVmqaUeSPa4mbQxPpPuQvFj5URjHcALxg OYTdKMBsrar7bbHGeob3N62OwWAaH3eE1+kfZjKoZK1Ad7qkoNNRF0Jlsr5hHbmL1Y4L qTig== X-Gm-Message-State: APjAAAVPgDbjYJkAcBHKtsyMIpsTZ/YCBY/kPUBfCEEHXNKuJOp/t//L wZ8vKeNkKcYc2hXy08afT7Co2S/3lvS7Z/CEu8WXSu3YWnDq X-Google-Smtp-Source: APXvYqwmWXGhIPxuo2dx4extPBJ7l9tAksm0/QEkCzNO94Y6Oga2FGi+fbiune3/sMrwpq9tWEUrL4tMPZpal6LsUhEvlZ7JgQiO MIME-Version: 1.0 X-Received: by 2002:a02:6610:: with SMTP id k16mr3733083jac.40.1553189941229; Thu, 21 Mar 2019 10:39:01 -0700 (PDT) Date: Thu, 21 Mar 2019 10:39:01 -0700 In-Reply-To: <00000000000057e614057a9abcd3@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b73f7005849e3600@google.com> Subject: Re: KASAN: null-ptr-deref Read in refcount_sub_and_test_checked (2) From: syzbot To: kyungmin.park@samsung.com, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, m.szyprowski@samsung.com, mchehab@kernel.org, pawel@osciak.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Bisection is inconclusive: the bug happens on the oldest tested release. bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13b0323b200000 start commit: [unknown git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=1070323b200000 console output: https://syzkaller.appspot.com/x/log.txt?x=17b0323b200000 dashboard link: https://syzkaller.appspot.com/bug?extid=0468b73bdbb243217224 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16d20893400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=118f5a2b400000 For information about bisection process see: https://goo.gl/tpsmEJ#bisection