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 4809FC43331 for ; Mon, 11 Nov 2019 16:07:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 29B9F21925 for ; Mon, 11 Nov 2019 16:07:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726965AbfKKQHC (ORCPT ); Mon, 11 Nov 2019 11:07:02 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:40885 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726897AbfKKQHC (ORCPT ); Mon, 11 Nov 2019 11:07:02 -0500 Received: by mail-il1-f200.google.com with SMTP id x17so17254740ill.7 for ; Mon, 11 Nov 2019 08:07:01 -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=gFl20HjZDqq+nPQeJUYSxv5Bfmo8ZIyMRQ74ccfUZsc=; b=QFToBtUkgjQC5kvNQ71gLcjCVFuziAzNJ6pOCbwpG0ZL9ZwJo6ubKECWBuvzUnfHbA yvDkIoIZ0a4Rgh5ZAC5cA1ok9DWz+R51Agn2GWoCOdcjgZSkjYiwDwEC6keoLxiBh/Iw zexY4ZAclK/raXM1IZCE/GQ8bQFys1LGJWv20h7EtiKz5JSoZLNfKv7crdwNTKRToUUt +2Xc2RZB4kKK55wDVW3x9QMfJtCKLLL14SKl4sdq7Y66l67GUfCmjEe0ev4jI/6mnZY6 jK4yAZyzrKVwNA95/3BPxfvHW2/go/ZkG4ntyqM3SbIIWbswAF4LuCTR+120piqzrP4E W2Kg== X-Gm-Message-State: APjAAAVF7LFLRnfvCB935I54I1u/F17DlLJAGTtQH+4/Q50tczF+a1wQ R9fV6kf8nWHe+HCIv6P/v5IMgATICkm5p3oEzY7Oanh/INJF X-Google-Smtp-Source: APXvYqywxuAwIOiw8d0TKszs0yk4o9kaGMvUJ9K55SHH6Im/F08TWUOQQw1vBGPnwfBhSwGcTMIJv9gca9cNfCX3fkgdzA02Qkyu MIME-Version: 1.0 X-Received: by 2002:a92:dd0f:: with SMTP id n15mr31057502ilm.146.1573488421314; Mon, 11 Nov 2019 08:07:01 -0800 (PST) Date: Mon, 11 Nov 2019 08:07:01 -0800 In-Reply-To: <000000000000aae1480596a5632b@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000692ac105971452c5@google.com> Subject: Re: WARNING: refcount bug in j1939_netdev_start 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=17100f3ae00000 start commit: 9805a683 Merge branch 'x86-urgent-for-linus' of git://git... git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=14900f3ae00000 console output: https://syzkaller.appspot.com/x/log.txt?x=10900f3ae00000 kernel config: https://syzkaller.appspot.com/x/.config?x=896c87b73c6fcda6 dashboard link: https://syzkaller.appspot.com/bug?extid=afd421337a736d6c1ee6 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10d713c6e00000 Reported-by: syzbot+afd421337a736d6c1ee6@syzkaller.appspotmail.com Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol") For information about bisection process see: https://goo.gl/tpsmEJ#bisection