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,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 5D28AC432C0 for ; Fri, 22 Nov 2019 16:29:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2E36320714 for ; Fri, 22 Nov 2019 16:29:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727344AbfKVQ3D (ORCPT ); Fri, 22 Nov 2019 11:29:03 -0500 Received: from mail-il1-f199.google.com ([209.85.166.199]:33128 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726633AbfKVQ3C (ORCPT ); Fri, 22 Nov 2019 11:29:02 -0500 Received: by mail-il1-f199.google.com with SMTP id s14so6548378ila.0 for ; Fri, 22 Nov 2019 08:29:01 -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=HQ+aRmfLltcLkpVdgBFWiEzD/54gHAOvGypCxp4+zYk=; b=WCfCm41/YFCTqCRzG8JJW+ez6stqSshCXLITDdbhDfsFQOzq+ozE8TZ8GFPBD3jY1J lh8hA4Ck2E0sdCBl6rOL544VcSIrHtU/4nyTHT8PkGJqaJL+3Od7T+pez18TcXDHGVNN wWcc/72roYa8M9XS4sr6RD0AgMDfI7AiXwnLmCeXLvOwc7N0YSf9PxX+Jydv3URect55 uGS+Z8orulWw1l4WvZLbvBiy4C6krr+vaXMNVeiRj45f082fhGLM+tRrjB6C48dkeiwl d+f3ZVl/kc8aCI47GATpqYfHlZPw4WYzeK3io7EZrXfcBv6/vMWGRRop5tQnxM/7ePpp V4nw== X-Gm-Message-State: APjAAAVhcJ2H4rKRv8RPuuSZWI1XvEtBrNFlg9Cf0kWtkaZYG4fm3DKQ EKIoSkqGVe7ZBgXGjlDVfqxCRwZCkviJHF9HQ5a6I62gEaLd X-Google-Smtp-Source: APXvYqzxrMGvf7icFZ2NFBhVDjuvmZrj/A7E7lxHtKF//lmGDl1QJg0ORRUPcDTAWeC4UuPvfnze+ZFibgvjjCCHfe9cdOLU2m99 MIME-Version: 1.0 X-Received: by 2002:a5d:9349:: with SMTP id i9mr13650191ioo.163.1574440140551; Fri, 22 Nov 2019 08:29:00 -0800 (PST) Date: Fri, 22 Nov 2019 08:29:00 -0800 In-Reply-To: <0000000000001282e1057e14848e@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000004c40290597f1e91e@google.com> Subject: Re: WARNING in perf_group_attach From: syzbot To: acme@kernel.org, acme@redhat.com, alexander.shishkin@linux.intel.com, daniel@iogearbox.net, davem@davemloft.net, jbacik@fb.com, jolsa@redhat.com, kernel-team@fb.com, linux-kernel@vger.kernel.org, mingo@kernel.org, mingo@redhat.com, namhyung@kernel.org, peterz@infradead.org, rostedt@goodmis.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, torvalds@linux-foundation.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 33ea4b24277b06dbc55d7f5772a46f029600255e Author: Song Liu Date: Wed Dec 6 22:45:16 2017 +0000 perf/core: Implement the 'perf_uprobe' PMU bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1038fecae00000 start commit: 0072a0c1 Merge tag 'media/v4.20-4' of git://git.kernel.org.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=1238fecae00000 console output: https://syzkaller.appspot.com/x/log.txt?x=1438fecae00000 kernel config: https://syzkaller.appspot.com/x/.config?x=b9cc5a440391cbfd dashboard link: https://syzkaller.appspot.com/bug?extid=23fe48cbe532abffa52e syz repro: https://syzkaller.appspot.com/x/repro.syz?x=135e93eb400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13189415400000 Reported-by: syzbot+23fe48cbe532abffa52e@syzkaller.appspotmail.com Fixes: 33ea4b24277b ("perf/core: Implement the 'perf_uprobe' PMU") For information about bisection process see: https://goo.gl/tpsmEJ#bisection