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=-5.4 required=3.0 tests=FROM_LOCAL_DIGITS, FROM_LOCAL_HEX,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,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 58A68C433FF for ; Wed, 31 Jul 2019 21:32:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3B55B20679 for ; Wed, 31 Jul 2019 21:32:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730840AbfGaVcB (ORCPT ); Wed, 31 Jul 2019 17:32:01 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:45808 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728209AbfGaVcB (ORCPT ); Wed, 31 Jul 2019 17:32:01 -0400 Received: by mail-io1-f70.google.com with SMTP id e20so76222672ioe.12 for ; Wed, 31 Jul 2019 14:32:00 -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=f0dy6kexOd2FnIvWJ+xs8RuUZn++/g3nMaxpfE04Ep0=; b=oQP1722fjxx6BtrprucYZo5AOwVK/upoo1rZCfNPMYk5UOC4ZtVBQYYJ5MPaTIh9Jf fcRlwtx01CYSa9D53L1NeasktBS74R0InqRNAVhLPXfw2czCsRaWy/Ui6SIw5l3o2ImG Ky4T7F1xXZkXjooQKiIuOasVWQsJS2IfgXtJMZPYQb7UrZjbp+r9uMonqD9vGrE6gXMz Htvg6xHPSa7FNolG8WS8D+UJhWxpKlvNwAvYni9IuvT2i00gfgVRGKncJMpDAdi69WMv Klz/HCS32y6IadvK7P+jxReTAYDiJU5hAici4xIz6Pfh/mIENasOH3HT/+pY4Kilc9pX iSWA== X-Gm-Message-State: APjAAAXkDFsz7QLCzhiq80VQWhcuVfDhGnkLRNHpnFeW13PNckZPSfyE ia9VdplCnEqxNxje+30Xbuo4ygfnOfsFU6ap5w8IeI3uGFED X-Google-Smtp-Source: APXvYqwVPz+8gD0GBmy3CsE0op/bI4tHp70A9CTOcj/3hT40iRHICuhe/dAtU7/Fw6Klat0pJPM5AyBuP8aWPA3vxEXR67WnoJpp MIME-Version: 1.0 X-Received: by 2002:a02:914c:: with SMTP id b12mr83757999jag.105.1564608720391; Wed, 31 Jul 2019 14:32:00 -0700 (PDT) Date: Wed, 31 Jul 2019 14:32:00 -0700 In-Reply-To: <000000000000e42667058e554371@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000fdd90c058f00daca@google.com> Subject: Re: KASAN: use-after-free Read in nr_rx_frame (2) From: syzbot To: davem@davemloft.net, dvyukov@google.com, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org, syzkaller-bugs@googlegroups.com, xiyou.wangcong@gmail.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has bisected this bug to: commit c8c8218ec5af5d2598381883acbefbf604e56b5e Author: Cong Wang Date: Thu Jun 27 21:30:58 2019 +0000 netrom: fix a memory leak in nr_rx_frame() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=122ddaec600000 start commit: 629f8205 Merge tag 'for-linus-20190730' of git://git.kerne.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=112ddaec600000 console output: https://syzkaller.appspot.com/x/log.txt?x=162ddaec600000 kernel config: https://syzkaller.appspot.com/x/.config?x=e397351d2615e10 dashboard link: https://syzkaller.appspot.com/bug?extid=701728447042217b67c1 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14a6e008600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11937d92600000 Reported-by: syzbot+701728447042217b67c1@syzkaller.appspotmail.com Fixes: c8c8218ec5af ("netrom: fix a memory leak in nr_rx_frame()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection