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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9D779C43334 for ; Mon, 13 Jun 2022 11:31:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353977AbiFMLbL (ORCPT ); Mon, 13 Jun 2022 07:31:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46046 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354409AbiFML32 (ORCPT ); Mon, 13 Jun 2022 07:29:28 -0400 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 090E1CE1A for ; Mon, 13 Jun 2022 03:44:08 -0700 (PDT) Received: by mail-io1-f70.google.com with SMTP id w21-20020a5d9cd5000000b00669e6796a8aso1106611iow.7 for ; Mon, 13 Jun 2022 03:44:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=fEZcgfMVZzqJc7ybxib8fa3FVpwuXcVDtcH0dPsG3A0=; b=Puz34NoN2ampriFi1KNZqNA4+KmJy/aaRzcNF4kEee19Yb7kizXZiLEu97CLk8yAG8 xqX41mmihiHp3DiV3AVpsbFvGeRyGeNFAbQopTnjQSorCTLvQkR58vn9lvfGKTugVW3O LXM8CCm4VY/q82pfEWE5hiXiRw5/7Ejh5P7b7EGaI4Xp++UMOLS0hoGlP/5/B0Q05fvI mh90r8fThtqs1B6T1Enlekg0lkAL1i5+QvB/X1mQncKX+TuEtvtG/6YXjPCqGL2w8K6N OVczjEVrVop8r88au9Ac8vzra/GYZndeA9TPC1HF1j11MXJpNoJ3khphdFWm+11MuGwH TvNA== X-Gm-Message-State: AOAM533AkFOjoTkdUJO2N5vLZQI9VZxBUXo6icmN+KRzp3M8Jm7lnAaq N3cNeLGBv2nrBQPoBgaQ3VaRU/mp/vNBpTEYbP4uOzxqQ1Xk X-Google-Smtp-Source: ABdhPJzYGM8wyFXxpBqce+DRay56fuykYJTlm3Z97gco3gXVLKQDBQe+LJkoivDQ05RRSo2Ln1SRxrgMrCK2ym0icmTglewkd24E MIME-Version: 1.0 X-Received: by 2002:a05:6638:438c:b0:331:adac:a274 with SMTP id bo12-20020a056638438c00b00331adaca274mr23027146jab.192.1655117047472; Mon, 13 Jun 2022 03:44:07 -0700 (PDT) Date: Mon, 13 Jun 2022 03:44:07 -0700 In-Reply-To: <000000000000e2fc3f05e141f930@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ad299205e151f7d3@google.com> Subject: Re: [syzbot] WARNING in exit_tasks_rcu_finish From: syzbot To: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, brauner@kernel.org, daniel@iogearbox.net, davem@davemloft.net, ebiederm@xmission.com, frederic@kernel.org, hawk@kernel.org, jiangshanlai@gmail.com, joel@joelfernandes.org, john.fastabend@gmail.com, josh@joshtriplett.org, kafai@fb.com, keescook@chromium.org, kpsingh@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, mathieu.desnoyers@efficios.com, netdev@vger.kernel.org, pabeni@redhat.com, paulmck@kernel.org, quic_neeraju@quicinc.com, rcu@vger.kernel.org, rostedt@goodmis.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org syzbot has bisected this issue to: commit 09f110d4a1597185a5ed177da8573eec997b7227 Author: Paul E. McKenney Date: Tue May 17 18:30:32 2022 +0000 rcu-tasks: Track blocked RCU Tasks Trace readers bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=170f6ee7f00000 start commit: 6d0c80680317 Add linux-next specific files for 20220610 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=148f6ee7f00000 console output: https://syzkaller.appspot.com/x/log.txt?x=108f6ee7f00000 kernel config: https://syzkaller.appspot.com/x/.config?x=a30d6e3e814e5931 dashboard link: https://syzkaller.appspot.com/bug?extid=9bb26e7c5e8e4fa7e641 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=177b6230080000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=148207bff00000 Reported-by: syzbot+9bb26e7c5e8e4fa7e641@syzkaller.appspotmail.com Fixes: 09f110d4a159 ("rcu-tasks: Track blocked RCU Tasks Trace readers") For information about bisection process see: https://goo.gl/tpsmEJ#bisection