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_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 C9BEAC43331 for ; Mon, 11 Nov 2019 03:57:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A8BE3206BB for ; Mon, 11 Nov 2019 03:57:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726915AbfKKD5E (ORCPT ); Sun, 10 Nov 2019 22:57:04 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:49282 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726749AbfKKD5D (ORCPT ); Sun, 10 Nov 2019 22:57:03 -0500 Received: by mail-il1-f200.google.com with SMTP id c2so15781308ilj.16 for ; Sun, 10 Nov 2019 19:57:01 -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=ahqf5JMi9x4MvVhOL42cOCJqrc4gS0aQJVD9aozCigk=; b=hvUBZ+8PG37+dBHkQLygVTgmQ9VdDwwnbD8DwZKHQqFiMC5xxVO/ucksQzu2n/CRzQ eOQHjj+asQTcjGuz5MM0bxaDxVJXbPle4Bhf1e5hsPVd+yfBi0sGDrBPcsDs6nZpZwg8 5xBcHeY741peZcor0CMVqEFxLiBu0k7bCsHSWPMhKCK2bTYweQH7FNSaGRhi5S6CvbJT +K24oZER68H83Fi25aH/HqyxZ66i9H6paOOcDXRRrUzH0TloXDUUP+FMDVIcw0livnGj NNedU1OcMGU0/werj6eBCNBHGExmfduf2cmccax4OUhq880wd5vRv6YT1Y14mh20nDBa Ln3g== X-Gm-Message-State: APjAAAUWpxgoh7T2TzjlhQy1Do5wICoSprKDmhOoNR2o9MjNEpPXXJ+f gIRmWQwoSvBW3wQb6CoqXzlWvjiiJ+1A1v6dyTJfmOE2Wusq X-Google-Smtp-Source: APXvYqxIayoK3rWM7U/FC6CNlkGPnuolY7jUbXULvgiXcBHeAhVQj+4RetmukhTi4OYUOkBjLlTShjAPyzdnLzWMGXOucgeE3et/ MIME-Version: 1.0 X-Received: by 2002:a02:3903:: with SMTP id l3mr22649703jaa.72.1573444621272; Sun, 10 Nov 2019 19:57:01 -0800 (PST) Date: Sun, 10 Nov 2019 19:57:01 -0800 In-Reply-To: <00000000000082c66d059705e442@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b98cf305970a1fd3@google.com> Subject: Re: KASAN: use-after-free Read in j1939_session_get_by_addr_locked From: syzbot To: bst@pengutronix.de, davem@davemloft.net, dev.kurt@vandijck-laurijssen.be, ecathinds@gmail.com, kernel@pengutronix.de, linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, linux@rempel-privat.de, lkp@intel.com, maxime.jayat@mobile-devices.fr, mkl@pengutronix.de, netdev@vger.kernel.org, o.rempel@pengutronix.de, robin@protonic.nl, socketcan@hartkopp.net, 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 syzbot has bisected this bug to: commit 9d71dd0c70099914fcd063135da3c580865e924c Author: The j1939 authors Date: Mon Oct 8 09:48:36 2018 +0000 can: add support of SAE J1939 protocol bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11bc06d6e00000 start commit: 00aff683 Merge tag 'for-5.4-rc6-tag' of git://git.kernel.o.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=13bc06d6e00000 console output: https://syzkaller.appspot.com/x/log.txt?x=15bc06d6e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=8c5e2eca3f31f9bf dashboard link: https://syzkaller.appspot.com/bug?extid=ca172a0ac477ac90f045 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=144150e2e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11aaa9fce00000 Reported-by: syzbot+ca172a0ac477ac90f045@syzkaller.appspotmail.com Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol") For information about bisection process see: https://goo.gl/tpsmEJ#bisection