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 97E8FC54EBD for ; Mon, 9 Jan 2023 02:34:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233703AbjAICeZ (ORCPT ); Sun, 8 Jan 2023 21:34:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53440 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233096AbjAICeY (ORCPT ); Sun, 8 Jan 2023 21:34:24 -0500 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B22BAA45E for ; Sun, 8 Jan 2023 18:34:23 -0800 (PST) Received: by mail-io1-f71.google.com with SMTP id d24-20020a5d9bd8000000b006ee2ddf6d77so4011677ion.6 for ; Sun, 08 Jan 2023 18:34:23 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=7rcvn48tUUP2FTlVeQr9AifQJvd5jYKtHm0iLNtdMWo=; b=V+0CGRI28oF7kOqA7YKR5vfQFpXR3ga6s/JMhOPrPa5NBU4LPOlfhJAEUl8X1j0IFQ +B4VnO5IT19zRiTCT00MJGGn+ZVhbUeiS3DNsVPDDvsCXBcdNIQbuAnjcW5qCLc01HKo dWgNJqs9EKE3/mScFUPnP3r6HinK9SRRMCkosJM1J8exjHkLLOjPvMAhPPvVMsd72G0X nMJzl9MgxObVtz5nY9mlnclzVmXJmMBIyql2KnGzdwciPfDC5vlUPO8JOdtg8nk5+kFJ 8r1/mknyNc1oTYtjvI2zStTR5R3Eg3Oc4UojxmawlBp68WW1+ADXX+RwCxldfRy5z3Dv KnNQ== X-Gm-Message-State: AFqh2krMkMr4GrBajLuF+E+xyzcDMO1Yj3JN+YA1wdt2J6eS5vDXXu3i 5HVEUHZ1MudJj7cLu/RX5noIO9nzUNzkle1vOTlcYtz9M9fd X-Google-Smtp-Source: AMrXdXtyWF6n+SkKThTewWuMsVgJytLmOd3j80ZHF91ZEghmQIZLMZWR3G3eciaEYPpa4ngxefOi+N9m74PC8PJNSe2a8p9saJ3Y MIME-Version: 1.0 X-Received: by 2002:a5d:9655:0:b0:6df:f621:ee37 with SMTP id d21-20020a5d9655000000b006dff621ee37mr5198929ios.174.1673231663100; Sun, 08 Jan 2023 18:34:23 -0800 (PST) Date: Sun, 08 Jan 2023 18:34:23 -0800 In-Reply-To: <4be0a7d0-a1ac-1cd4-ccba-77653342efdc@kernel.dk> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e7f96f05f1cb9a84@google.com> Subject: Re: [syzbot] KASAN: wild-memory-access Read in io_wq_worker_running From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: INFO: rcu detected stall in corrupted rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P5774 } 2664 jiffies s: 2777 root: 0x0/T rcu: blocking rcu_node structures (internal RCU debug): Tested on: commit: e6db6f93 io_uring/io-wq: only free worker if it was al.. git tree: git://git.kernel.dk/linux.git io_uring-6.2 console output: https://syzkaller.appspot.com/x/log.txt?x=116df816480000 kernel config: https://syzkaller.appspot.com/x/.config?x=2edd87fe5cbdf43f dashboard link: https://syzkaller.appspot.com/bug?extid=d56ec896af3637bdb7e4 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Note: no patches were applied.