From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6F73F110B for ; Thu, 28 Sep 2023 08:34:15 +0000 (UTC) Received: from mail-ot1-f69.google.com (mail-ot1-f69.google.com [209.85.210.69]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D48DCAC for ; Thu, 28 Sep 2023 01:34:13 -0700 (PDT) Received: by mail-ot1-f69.google.com with SMTP id 46e09a7af769-6c4e17f37acso20037535a34.1 for ; Thu, 28 Sep 2023 01:34:13 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695890053; x=1696494853; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=5gnCChu3OPSULseuxsND/OC3A1/+wMaTTBp9NGU091g=; b=Pb6di5RC1Cf8O+NtE26bE/4hpUktzzPo/fIh/E2Rem70dOD7MFVzoScYC2ERqlJAQQ xhmMR32+Z1xzEvXgVFF25vWV5QIhcK2xkjZ0sDXIK+MTYOWsk7g/r6snBKvlUeCRaK7s Cd1qSjxqjdQwpX0sPnQpC5pkCtzjCDn8OKdCuaWaNX83zvf1Oez6KaJkB//KUpNAHKp6 zXmR8jBeaUhh3iS8Btttf5eghYHk7tllfSyadhINROr4Dc7Mu00uLDbh4TSSqwRGwmTU wLSBUZpnLDGAwmoeyKF8JlUZTpmW6qCEX8n0mfHIUdDKApuLNrHjchZGvzd3BJMRbEiM 66Fg== X-Gm-Message-State: AOJu0Yz2aa25BKvv12m8MtZr0KMRbEJy5l1b/kjSnfsJDGuk+phR5JTd Z/UoOb1HeNnEWn8nzX63RD5MjkmQsX9ntxbOs4O+kIu1AId9 X-Google-Smtp-Source: AGHT+IF9KchoAbdBn8cAF3kwm11v8WwkvIJGdTzNT7wPWDxuCnjFJvdAMeVTMBnzh5aDQ1IM6YlCQX0DcmnNmkK7BVifFzdxX4Sb Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6830:22d2:b0:6bd:b74:2dab with SMTP id q18-20020a05683022d200b006bd0b742dabmr137988otc.2.1695890053216; Thu, 28 Sep 2023 01:34:13 -0700 (PDT) Date: Thu, 28 Sep 2023 01:34:13 -0700 In-Reply-To: <0000000000003dcc9306031affdd@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000003341ba0606672c7a@google.com> Subject: Re: [syzbot] [kernel?] INFO: rcu detected stall in sys_clock_nanosleep (5) From: syzbot To: edumazet@google.com, hdanton@sina.com, jhs@mojatatu.com, linux-kernel@vger.kernel.org, michal.kubiak@intel.com, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=0.9 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL,SORTED_RECIPS,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net syzbot suspects this issue was fixed by commit: commit 8c21ab1bae945686c602c5bfa4e3f3352c2452c5 Author: Eric Dumazet Date: Tue Aug 29 12:35:41 2023 +0000 net/sched: fq_pie: avoid stalls in fq_pie_timer() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12958976680000 start commit: 6709d4b7bc2e net: nfc: Fix use-after-free caused by nfc_ll.. git tree: net kernel config: https://syzkaller.appspot.com/x/.config?x=2cbd298d0aff1140 dashboard link: https://syzkaller.appspot.com/bug?extid=43cc00d616820666f675 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10858fc0a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14781270a80000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: net/sched: fq_pie: avoid stalls in fq_pie_timer() For information about bisection process see: https://goo.gl/tpsmEJ#bisection