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 75605C677F1 for ; Mon, 16 Jan 2023 18:15:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231346AbjAPSPW (ORCPT ); Mon, 16 Jan 2023 13:15:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55716 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231628AbjAPSOc (ORCPT ); Mon, 16 Jan 2023 13:14:32 -0500 Received: from mail-pg1-x535.google.com (mail-pg1-x535.google.com [IPv6:2607:f8b0:4864:20::535]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3D7872B2A3 for ; Mon, 16 Jan 2023 10:01:23 -0800 (PST) Received: by mail-pg1-x535.google.com with SMTP id v3so20186542pgh.4 for ; Mon, 16 Jan 2023 10:01:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=MUThk+A2NPDO7+1yWET3Dp+/IOwZbM2+REhhiQMAGAo=; b=PQacTKx2uULp3FlIoZOF630hD/tc3DZ88f/1CoWVqhGc/sODsb9ATqIqzhrZdndv5X xP1hS4RthofTGpUROHAHzWdfZmojirA655/tuugSFrRMkOsN6szJt/8TXB5S2pade7cF T/2RhAPSYInwrK/Zh1dPmi0/YMD+8PBg7J1dpCGEoRKYuqzVoqwtRn0/oW7lsWLfj2vM xc3U4WNoIqrIHTRz5cGFqPAsw4gw7Ehj/Gu1PVgc5De4AmKhp7toDcpmjc6KkC5mQlxz nylQt4AYCMuXg8QB8iFei8rNABXvPe6gwInZLJLabo6E5sIZTmfWHlryN3y8b0B9CUAD RSlg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=MUThk+A2NPDO7+1yWET3Dp+/IOwZbM2+REhhiQMAGAo=; b=JpeLdl2T4bxsj3dXmH15v690/Q88y9ahklh6r2dtP6Kf51gpiBOKaV9ybX+kPIdG6Q FAdw2tJlx5Yvl23tQXz5iFE2Qz2/fgfUB3lQcyh3l9Pk63uWS1qQ+DZPIQWXt6GBCKsI zk0n8ex9JEqyD2+gym7m0uOiXe7ngrekUCmv0oxlIPFUf1pj5J6hCjy0Ehc7491UIqBU gGuJyPQ5/pywfWNb3pImqssQH3HBUUG6nRwwMcH978wWuThwxdYctDnAl/vpSDp6+Yxz luUlhAIv3UHsPp+7pdP9j8RnBLZNVFbnAzyy7GY70B5xloxj889kNknYcNUAatPJIZlh f92Q== X-Gm-Message-State: AFqh2kpMOGtjOnilNZcKQ8MqEhmHOObkXj2ytBCA1ESsD1lydOE9uii3 J71K4+3oRitKuZGG7zKv0zgv1w== X-Google-Smtp-Source: AMrXdXv5pgb9vWqU7+ifee1xFN2J/GODbUegb6MgCnye8aGNQPoC+pksX2u240aZMDW1TnLmCbNjYw== X-Received: by 2002:a62:1c8b:0:b0:58d:995c:9c25 with SMTP id c133-20020a621c8b000000b0058d995c9c25mr106894pfc.3.1673892082674; Mon, 16 Jan 2023 10:01:22 -0800 (PST) Received: from [192.168.1.136] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id z19-20020aa79593000000b00582388bd80csm18508738pfj.83.2023.01.16.10.01.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 16 Jan 2023 10:01:22 -0800 (PST) Message-ID: <8cea8a30-00a9-89aa-704c-44e4c95a3b51@kernel.dk> Date: Mon, 16 Jan 2023 11:01:20 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:102.0) Gecko/20100101 Thunderbird/102.6.0 Subject: Re: [syzbot] WARNING: refcount bug in mm_update_next_owner Content-Language: en-US To: Jann Horn , syzbot , Pavel Begunkov , io-uring Cc: akpm@linux-foundation.org, arnd@arndb.de, brauner@kernel.org, ebiederm@xmission.com, keescook@chromium.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <000000000000e259c105f25c92da@google.com> From: Jens Axboe In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 1/16/23 10:53 AM, Jann Horn wrote: > All 5 console logs listed on the syzkaller dashboard for this one have > io-uring with IORING_OP_POLL_ADD somewhere. Could that be related? It was just due to a buggy patch that's long since been fixed. #syz invalid -- Jens Axboe