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_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 8E5F0C282DE for ; Wed, 5 Jun 2019 06:47:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 698492075B for ; Wed, 5 Jun 2019 06:47:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726568AbfFEGrC (ORCPT ); Wed, 5 Jun 2019 02:47:02 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:37573 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726407AbfFEGrB (ORCPT ); Wed, 5 Jun 2019 02:47:01 -0400 Received: by mail-io1-f69.google.com with SMTP id j18so18257820ioj.4 for ; Tue, 04 Jun 2019 23:47:01 -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=0DTPebv5NG8S97eb6NYfGtH6s2XhZbJcgpOSN9G3WRc=; b=ETslqs7H6MnFYihiBoPs9AJGwgrk9RuLblZn2ZT4ngVSI7CNyD1fihQc9tBQbeV8jO mTDMCi8g6d+OIu04FVivTvBmdx+O5t4iCTBlRTixGvlS9l18klI67ay1d0XuMv2K2pKA QtTZtZBRyz1hlMGiFfAJK47WdoX2hcIRRWj3CbjHs6BDtSQRJEl1+nUId2Ym5cajp3s2 u/D4X/oXmFscbRsHUXnpqyK0J6clOGWoF86FJ1jw/pcqWpN6b9pbD6WQwq0TfxMjd+kH 0XzVUZIAt3+eylcq1CamrpAK0WmxH75D4dewQe0jQN2hPXrb35jRmpBneepr5MAGp1S1 6GSw== X-Gm-Message-State: APjAAAUmgTZzcpP6gxW4WuYs9hDXQ/Nvm3ivHlGbLMGccSX9vI2tIQuU GuhYeNWwyYlCp1bV8QmjUa8wkUTej07WQYmzP+Xud/7QOY6E X-Google-Smtp-Source: APXvYqxcRwKznu5s/WF30ioOt1OAX+adyD0fCRP3X69hk9R87NnszpPYpCAzlAXH7mBu0a2hct/HG73f5mTEx1ANoDYrvg/aI0Iv MIME-Version: 1.0 X-Received: by 2002:a24:2b8f:: with SMTP id h137mr7710740ita.162.1559717221001; Tue, 04 Jun 2019 23:47:01 -0700 (PDT) Date: Tue, 04 Jun 2019 23:47:00 -0700 In-Reply-To: <00000000000097025d058a7fd785@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e878a9058a8df684@google.com> Subject: Re: KASAN: slab-out-of-bounds Read in css_task_iter_advance From: syzbot To: ast@kernel.org, bpf@vger.kernel.org, cgroups@vger.kernel.org, daniel@iogearbox.net, hannes@cmpxchg.org, kafai@fb.com, linux-kernel@vger.kernel.org, lizefan@huawei.com, netdev@vger.kernel.org, oleg@redhat.com, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, tj@kernel.org, yhs@fb.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 b636fd38dc40113f853337a7d2a6885ad23b8811 Author: Tejun Heo Date: Fri May 31 17:38:58 2019 +0000 cgroup: Implement css_task_iter_skip() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1256fcd2a00000 start commit: 56b697c6 Add linux-next specific files for 20190604 git tree: linux-next final crash: https://syzkaller.appspot.com/x/report.txt?x=1156fcd2a00000 console output: https://syzkaller.appspot.com/x/log.txt?x=1656fcd2a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=4248d6bc70076f7d dashboard link: https://syzkaller.appspot.com/bug?extid=9343b7623bc03dc680c1 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=102ab292a00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15f0e27ca00000 Reported-by: syzbot+9343b7623bc03dc680c1@syzkaller.appspotmail.com Fixes: b636fd38dc40 ("cgroup: Implement css_task_iter_skip()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection