From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f52.google.com (mail-wr1-f52.google.com [209.85.221.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 06F704A2E17 for ; Thu, 13 Aug 2026 17:25:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.52 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786641958; cv=none; b=nclWiWsGYTVmZ3tZoPSkEqfGFR2nsmuTd3x60zg2EjTeZVvaVwIHt6yoEDwkaftPwc0Eejhybq3N0TElvAX39TJdofzpNKBpOVBleG+1RDep7TmRREHMExMyN+uXzdEP74bRP/GnKmVEpkjyERg/q/QPmG+GtySRgKVh4ve59uw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786641958; c=relaxed/simple; bh=OArQ9c4MMcXgH9+Tw78yQqP/z7XON/wM/5m8ONyG1G8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=bA7R87o5esSXacqIP3oMYIWYeHNllrxs/MRtXwCOdJMxJGYDVVP8a8v4aR4nei8rQ8aWpUovezJl7Z4IOh9Kq8nd+nE6/MjbyeDuhG4ULItrHyBRAow3MK21aR4do12d4mnDwRhu6u31PFRkd91KGy8epoCBFcRSej15LVPTo+Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=UNeKMI9G; arc=none smtp.client-ip=209.85.221.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="UNeKMI9G" Received: by mail-wr1-f52.google.com with SMTP id ffacd0b85a97d-4798bea72f9so46792f8f.1 for ; Thu, 13 Aug 2026 10:25:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1786641952; x=1787246752; darn=vger.kernel.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=Vel6XA2+zNnsnhR1zxSk3iAl4F9DLTFaOpNJqTCaJik=; b=UNeKMI9GXcc8W/qWNsbuuAaJbt1tEBkvh9XQCWS7K7aTUTlI9apyRFy9+LwP2mC8W1 FPuFeXL2dV/IdrspuXsibXLhz7VQaxJ9qzcammvBA6XewWm4j9/qkPfiY+V7LPlC4+WT 1LzQMTtfoiNbc/htyX1FRSdWhnxKZy5s8W35fUSVFl58H26dXeITeVP/dTgY809Q13Ll diUoGqoiZ2YKdrY8kV+JJaSxLSPOp6AW3lnR8biMQrEZy3NhFSZgddepij/JK8qS1I7a iDXq2JZaFzPU7J342NFluYMZC7rmjryFozdch6HhQXN0syGvce5To0jNd9RWNa0CF/nQ OgzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786641952; x=1787246752; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=Vel6XA2+zNnsnhR1zxSk3iAl4F9DLTFaOpNJqTCaJik=; b=hMR1hf+HXpqUFpXk+Q1B5oHv+eat/qH/upNEs47qK4j/Q2bp5cZDvEoK90DUFeD8bW OKRxNdEwOhViTdBTwYwcPwHs13WP38LDmp69SXtgRaQ1RSaul5RRhuJD2DeERBY56cMX /4DwSBzG4N4xfMYPqWm/cy6pcbxES0/yRCiSJGtyOnruOhmtya49Suoa3An1+0yVzg3l /nzCtfs/0scLY97laGBL3r1PvIm2zmIJ35jUjYH83Roz97evBeJskuJcrKR3KqFzsCgw FJdgmgzWMpeUqAKvkg3NcXwlkOFDD65QcJ763y74b3USfS3MDNwoN5wNNOjU8nO5cnSB JtXg== X-Forwarded-Encrypted: i=1; AHgh+RooZnl+WSZgnkRBrMgEYIXtafvfJDe/eF3/si+9Hj0VMck10Sjb+ZVMIoIM7r36FI60bLB8+IqMkGcXF7g=@vger.kernel.org X-Gm-Message-State: AOJu0Yzhe++jo4jawy5MhWR0pccChQS7y14K8MCL0IfkUyXzXwtE7MaN g2iK9fecpxcVboEcFABC9cpHX+j8R8pUzW4OY+9tIEW7Qtdnf704Mz3kfRjDdKy76Y9jJelY6K/ DWjKDzA== X-Gm-Gg: AR+sD10Kp4eR8iMPeCLW7xc9924c88hCQD1LOEoArCTaKRQ8AQ8+8nazbQHslkdA5mH XsWksmlaDxtURsF3W9YMLztkfyXL6vNW5EOe9xKg93izClipIDXkF+kI6XopS+fUcaQWEFHEJIQ t4spYZHZBW9gVDxhu5XfwhzNhFjPo7Jriln0TUd22jJyPyx4rAx6qhC/bJQgIHxkTEpasT+jcRk fkgleizy6GcK8qYmNFtwgpp4gDB63kdjm+iywr71L5qTKWhJ+Qp8DuyL96OBTrL7mkDahwXTIn9 vYhXaflE0kzi0CaBfCeQsvOyQujxscJao7NAMnsG8ylMiD+WPDHuolr6O0cwzXUKliNc46A6sUn VDthz4ulu32fCWc8OX3ddBLOxqPM882sZN3DCrCk5qEy28oFketDbONW5jZT2gZ1KNXcWopPxfw D3IiRJREvxjGYkDXKc4wMcUOdoB0WmWMPNJUiy+mPPPRHCqo1a+gVpOlNuRlS3H6R/L/ZMTvxIE z5sZNXCTtCN5cgnQ/6iqsLRpHjnpxNV X-Received: by 2002:adf:e58d:0:b0:481:512c:4a7c with SMTP id ffacd0b85a97d-48159cc05bbmr9051714f8f.9.1786641951349; Thu, 13 Aug 2026 10:25:51 -0700 (PDT) Received: from google.com (135.91.155.104.bc.googleusercontent.com. [104.155.91.135]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4815f2005bcsm935600f8f.6.2026.08.13.10.25.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Aug 2026 10:25:36 -0700 (PDT) Date: Thu, 13 Aug 2026 18:25:32 +0100 From: Vincent Donnefort To: "Masami Hiramatsu (Google)" Cc: Steven Rostedt , Mathieu Desnoyers , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, kernel-team@android.com Subject: Re: [PATCH 0/1] ring-buffer: Fix sub-buffer order updates and free_page leaks Message-ID: References: <178663776361.475864.7685868697103378735.stgit@devnote2> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <178663776361.475864.7685868697103378735.stgit@devnote2> On Fri, Aug 14, 2026 at 01:16:03AM +0900, Masami Hiramatsu (Google) wrote: > Hi Vincent, > > Here is my patch to fix the race and free_page problem. > Let's see what Sashiko says for this. > > Thank you, > > --- > base-commit: 3d6d817622b0a9721e3cc404df3469171582be13 > > Masami Hiramatsu (Google) (1): > ring-buffer: Fix race between ring_buffer_subbuf_order_set() and readers > > > kernel/trace/ring_buffer.c | 35 +++++++++++++++++++++++++++++------ > 1 file changed, 29 insertions(+), 6 deletions(-) > > -- > Masami Hiramatsu (Google) Sorry I am not sure to understand what is wrong with that series I made here? https://lore.kernel.org/all/20260813131152.3589632-1-vdonnefort@google.com/ -- Vincent