Received: by 2002:a05:6a10:1287:0:0:0:0 with SMTP id d7csp5568347pxv; Wed, 28 Jul 2021 13:59:07 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyNCD4dt6CREiak/AtNAOHLz29NtpCvaVFBkO0UzozsmdHyh09pECW5+dkfeHrlQEcxGHSE X-Received: by 2002:a17:906:844b:: with SMTP id e11mr1324094ejy.446.1627505947267; Wed, 28 Jul 2021 13:59:07 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1627505947; cv=none; d=google.com; s=arc-20160816; b=eoarkTmuWjFMWnJ9MpI5yj42sukkbBEfl6FyLCxE3dIh7uIzUMnNIS+VqjWAIC/jKE RRt10uEtkvX9MmXeTngrYUv7UUjSfI0vge01X5Usr6neVW0PSP+2wy4vEbFYxhch06vm h+XCdfzrllGI3QPtC/upzbUsRmaUf9iFGG0+YMb3O1SX76kYW+a9oMTNXsHFPhqXQtO9 RgHoXEeXdcfURTEMThjU5NvnWZ2+7TBvZOwOYaxZhcY3J0VbG+31wajfxOthFtslkgV0 yyQ9bkTvZhqP80QtZrDxh46jhqmTLOJuVAtkvg9aQYmKRc8mTj4HTdNYVtR29PMXPNVB F2vA== 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=k7avy/HerkLzVt2TDE6cKZ9UT96PiKh/Pc16LGwaHOo=; b=piUdwBp0tT4Wr1HUPhxVTF+GP3lH80rQNNa/rbbioHLT6n//H39BlOEhNC/etYAT3g QNLzUHX8me6IRm/VZwLNM+wWV1v5nLCCr1pYdOt9HUt4nHDD7jqUZTcLVnRT/Ru+/37V e+pk3TbLsdBN1ItCcM6lplBdjIcQjq4d7Abj5WRfpF6qQdjIjNz/vRNm0ifAhwOrIj5I 8lS1yxh4qTtzn7SKc4SeOtIb2H3HArgEuAA7wPTuGOjvO4mrR9ffD8aMABKHyj73B34/ Omce3Zp1ekQJ0jzjY+r0cVbGvBuO3g6c67jEYt3THOHhJWmKNGXFp/dhUPYzvsEd4cO1 azNw== 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 q7si818352eja.751.2021.07.28.13.58.41; Wed, 28 Jul 2021 13:59:07 -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 S231645AbhG1U5K (ORCPT + 99 others); Wed, 28 Jul 2021 16:57:10 -0400 Received: from mail-il1-f198.google.com ([209.85.166.198]:45645 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231666AbhG1U5J (ORCPT ); Wed, 28 Jul 2021 16:57:09 -0400 Received: by mail-il1-f198.google.com with SMTP id l4-20020a9270040000b02901bb78581beaso2117190ilc.12 for ; Wed, 28 Jul 2021 13:57:07 -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=k7avy/HerkLzVt2TDE6cKZ9UT96PiKh/Pc16LGwaHOo=; b=JYxiZWFW4+ZLwZ/QWgboZe85YudaWwr8EkEr/xEO6bMgO0ZEEkhiI3Fq4VHF8kNuSe xlIiwglAFXfKOTq8cHgmOToNY0aFoa33oTN5Y7U5y+hSpjdukwTW7YbhgZByry9G+kZ9 URHWpa8pPlkABdVk8RO63msRZpKUFqzFFR+AoDtOPIdMmQZV0PkoRFSBlBbFvGoy3Ewt awrSdzMXD9BnC8asD94EbgjzLt02w9uXF0zRzrlOlKL1e0lEDhVx4+UjjbztRIT3KfJ8 tY8fCQfR+ZMKI4LwhzffBw18jZvt0TIntpAtxfetOwszZO+EK9HTouIEoADnBsQe+oO9 vDlQ== X-Gm-Message-State: AOAM533sa4QGcqJJGUfDQY4Rjkt98DT4u7nC0HyDgR32SqNw+C/iEnSL XN74bmMhLOvfhjHyrjgn+i4FR8TFCado8Jn4t9dBU+HaoDcY MIME-Version: 1.0 X-Received: by 2002:a02:cf0e:: with SMTP id q14mr1461977jar.86.1627505827360; Wed, 28 Jul 2021 13:57:07 -0700 (PDT) Date: Wed, 28 Jul 2021 13:57:07 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b5b15305c8353a74@google.com> Subject: Re: [syzbot] possible deadlock in iter_file_splice_write (2) From: syzbot To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-unionfs@vger.kernel.org, miklos@szeredi.hu, mszeredi@redhat.com, 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+4bdbcaa79e8ee36fe6af@syzkaller.appspotmail.com Tested on: commit: cdaddca6 ovl: fix deadlock in splice write git tree: git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git overlayfs-next kernel config: https://syzkaller.appspot.com/x/.config?x=4aa932b5eaeee9ef dashboard link: https://syzkaller.appspot.com/bug?extid=4bdbcaa79e8ee36fe6af compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.1 Note: testing is done by a robot and is best-effort only.