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=ham 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 A68B5C43331 for ; Mon, 11 Nov 2019 03:57:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 711E9206BB for ; Mon, 11 Nov 2019 03:57:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726819AbfKKD5C (ORCPT ); Sun, 10 Nov 2019 22:57:02 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:48140 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726749AbfKKD5C (ORCPT ); Sun, 10 Nov 2019 22:57:02 -0500 Received: by mail-il1-f200.google.com with SMTP id j68so15812918ili.15 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=GgxGLYtabVyzPl8hhUhI4ZerEi3VmfIGSVlcohY7uTKmqB583Au1zUiKOgzryQqpBP 4rLz4wrPmnx3UEKXzEvZBLQkOY/nQhEYcJClbXEq1154LkIbQfolz7CarP7iT0b6+mSP +DqWXZN8l1IJCnSrFA/tmq2KBkf5I5Ob84Hs//+nNk7JQQn/YG4VYTR+wtaW0mE5RXv7 UJy2uKQUndNFSzKB8jC8Gd4p4HToyubazGvj2Glix56F60Qb3X2NY2CVu1mw1GKXyErA EAeG/cXuNg8YFiyOau/K9pEhuIdxJaul1lGSzd8fnO4016dEnGztlApwRd5OC0EdADh4 wVYg== X-Gm-Message-State: APjAAAVG6qDzkBv5bp3dTlY/HH5IH3DJK62FTJ05YV57u3tsn4+CDKZW LSpwzH7Kg0G5oGBHNX4J2t+s5obZ8+ls4ZioI8i28sulQjq/ 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: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@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