Received: by 2002:a05:6a10:22f:0:0:0:0 with SMTP id 15csp3232847pxk; Mon, 28 Sep 2020 11:45:54 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxzelkPJ94ISfLL5bs6M9VPX+V/T7DxsAgQoXsRrCRcBt4bJZIt4zPVRHUQsCGTG8WIiEgS X-Received: by 2002:a17:906:1dd0:: with SMTP id v16mr130358ejh.309.1601318754482; Mon, 28 Sep 2020 11:45:54 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1601318754; cv=none; d=google.com; s=arc-20160816; b=opzNYu2DhQo/fKN/BUk/UsTFfMdRqwvgGhdySX+G9HGLgZ0EuU5adqrUaVXpnTp2vL okt5Xyp9uOATu8EEeophGnN1HgbY1y2zeR3w8HNx8gemg9qRCZPIjDKmrK0MrihsYjAy esSWUDjDy6A7r0xwBsgQqy1HdBkkyOJgOl25AN2WfUIA0Bph7uicFUIdiVrRoUYWM9Kc snxyhMEfJsVPIR7MI+9gNAKgeMqueNeblmQsIn8bsacpS7TOQIZLGBhDYuNnyPSYdPd4 jRWAbI/+vTaApRxeq7hcDNeVP3GD9/6ZF2Qc+5wTZOKVIwkCuLuLcYa3sSZBg1zjsTl4 CfxQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:to:from:subject:message-id:in-reply-to:date :mime-version; bh=USTitjBt7BhgpNWZwLXk38Ti/vZU2Kr0xZT/wNOO+pU=; b=hjNOdI6bPYg2HHxd6FBOMxTl/7c1E6X+eb0Z4jTXLNu4sRKIwkS7toPP6TbQDWqLOv gB8jtsrpn7BQK6SWLaw/agdeAl48AiRgOHgogEd9ssqF2fdC5coKCN3HtTrdTvpb7XJ5 EtKN5NenINARiRtT7Ep+JoPiTDqvLX3kFfv7TNtNkEro3sWR24Pa/RHH3hl0IViCVMJh JCc+9jBTnp8PxhYy/cazx+xMV0z9ZS9xYRh/Ymjy/TMgS1jZUOH9Jq8Ex2F5/Ltc9r+A BJ2zWynr/fumkv2tvRB15j2EDVsqYH37UMk6XDeJg2iGY4tGw1AnA+gHpR+7YuWEq6o5 m4nQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id g12si1263229edn.403.2020.09.28.11.45.31; Mon, 28 Sep 2020 11:45:54 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726607AbgI1SmM (ORCPT + 99 others); Mon, 28 Sep 2020 14:42:12 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:57256 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726325AbgI1SmL (ORCPT ); Mon, 28 Sep 2020 14:42:11 -0400 Received: by mail-io1-f71.google.com with SMTP id d21so1254718iow.23 for ; Mon, 28 Sep 2020 11:42:10 -0700 (PDT) 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=USTitjBt7BhgpNWZwLXk38Ti/vZU2Kr0xZT/wNOO+pU=; b=LAk9+mcHLoAGoV795EBSTwvYnJAaQZluZ5zc1utfOuOF5MYBiW3XYuqhpIuxJiPzdA gyCgEHFroiaaqSf2VwJj7q3GqDubdki3+z4k0b7vLRpHBzO9ZRen2awyCFJOuz/bXUv+ 08eU1MYxvbPGREf52OfhHCn05b+uxVstpa02939rX3MK//h9JZstxprGClDnI8jxUK+h 09pMKeQJ/p4GbbPipAqDYp4xo43HGH8JhEX0EHKW9t8uANSlSMQcXwle3Yjzc4xvx/jm vNZqApa7svk4zMtukvYIJPlSJSaGY5zSt9rtCIj7FngCBqfYsnhI3M9OFQuKz0NLw3si hEZQ== X-Gm-Message-State: AOAM531KEz82ema1mKbGBEkwB4uBWBGfcP4nmUvb7f690zDWukx0RgMo M5HMu5agJH/Yb6ZuP/6Q0wGL0Izwkc/8A7Jx7NaF18ZZVVhS MIME-Version: 1.0 X-Received: by 2002:a05:6e02:e0a:: with SMTP id a10mr2461640ilk.113.1601318530184; Mon, 28 Sep 2020 11:42:10 -0700 (PDT) Date: Mon, 28 Sep 2020 11:42:10 -0700 In-Reply-To: <835b294f-2d2b-082b-04dd-819e12095698@kernel.dk> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000029fbe305b06406d0@google.com> Subject: Re: general protection fault in io_poll_double_wake (2) From: syzbot To: axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-and-tested-by: syzbot+81b3883093f772addf6d@syzkaller.appspotmail.com Tested on: commit: fad8e0de io_uring: fix potential ABBA deadlock in ->show_f.. git tree: git://git.kernel.dk/linux-block io_uring-5.9 kernel config: https://syzkaller.appspot.com/x/.config?x=2daac53dfbd493d7 dashboard link: https://syzkaller.appspot.com/bug?extid=81b3883093f772addf6d compiler: gcc (GCC) 10.1.0-syz 20200507 Note: testing is done by a robot and is best-effort only.