From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f174.google.com (mail-pl1-f174.google.com [209.85.214.174]) (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 2B3F341C77 for ; Mon, 6 May 2024 16:30:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.174 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715013039; cv=none; b=rKQSzucvbVVIHfjTy5DGcototQh6VRS5Cdz9vi0UeYRx5VyrlxWZaAc9ez+Wlw8aLe6pEJopZ4XRGNyiwDB1wNdsSqkf4mZhNQ3MLX57ZpO5duouLeZP0/lNkW1iPYgQFvankUgBHqTkOOadGaMrZJBFVI9ZywfvEe11aj/0CSA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715013039; c=relaxed/simple; bh=yjPZgSjII1f7LAiUGTCRYweQcTK4hGtwF8kzc8UNAkc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=tvusRNimpqK/4/p8YOdW3dSaMWACxO89gMlcU1wdiU7JkDxe2YZJ5LNfwgT0udDJIJbD1Madw3jXgXRsmdjTVCEC9zigtqtf+c1axbEckdlBzF3Aj0aF5uWHjr/6uUwBw7m13OdHe6jkvpkDdlWJvBgygdyMoqd2QVwPf8lVLlQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=Q0T9dbxe; arc=none smtp.client-ip=209.85.214.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="Q0T9dbxe" Received: by mail-pl1-f174.google.com with SMTP id d9443c01a7336-1ed012c1afbso16113345ad.1 for ; Mon, 06 May 2024 09:30:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1715013037; x=1715617837; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=5nO/jBC7SnINVskvlvpi2Kyipwpsb5dE+lwh2d00uCo=; b=Q0T9dbxe/YYU3cdQgjucnt4nvqyWqprRb8+yu8sSuQ+yhwadfB9Tr27TVfwgaBymSb LPRVH39eZU6gq5gLwAB/oItqQg06zzPtdkb+Mm89NBTRZOcYX0nh81EHitYU0oSeH0ri MfQKjtVyhVal8LglHWyurg8UC7hn2FUJCxe38= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1715013037; x=1715617837; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=5nO/jBC7SnINVskvlvpi2Kyipwpsb5dE+lwh2d00uCo=; b=jBe2oKcSc5UagvKeAAITeEMZYfxHNYsGP6cXaRm3Z4n6MyEQYIEsn4wHQ3k10tSf8S LZO6LEMgU7rWVmtm3iDugV5i10yA2msP0vUgERuXeDpgIxVxpwqNvSPaaOfpPSTq8V+q HHuOV6WQ956F52NSqqb+viskrp8Lu8Cx1Jc34lylhvqL7G1SRFfVZjcn+Oyc6E76C5/n G4bIisOBMeyLY12oOref43C8vnILKENoUpmmywC2O065ZJ8ly58uDJVPStr2OuGUmtW/ UisOUKCj2ZUSScMvn4mqGCGefgZnczpdvobeAohHElPZIKzwNwHMdrVNHUL0OKFdSZ93 Cq0g== X-Forwarded-Encrypted: i=1; AJvYcCXvIdn0IGTDLPOVTfy0GzMiKl+iobqdwqsqxm4t1cUfbr5gIhI6O2BCRBJ5+rsXMaT/3ftKTcZ0MrkH2MXzeBCDcBFRsfeSCo69c4jm X-Gm-Message-State: AOJu0YwWP09TXxKv5/EVEYq7yElCarbZJ+QS0/wkdxXG6A2XihPFf0wi HGgCfecrTe4wEw1VDcJr6fk/Ob5Y08XdJNKCwfb3pxZTEi6vrPrXVYBGnDqwhA== X-Google-Smtp-Source: AGHT+IFcP+Jvqd/2a6pLKHSMXDBGF+KAP9XwchiHK23udF18xnHUuv2vvHD/KwYZxvsIqAr/6p7pIw== X-Received: by 2002:a17:903:1c3:b0:1e0:b60f:5de3 with SMTP id e3-20020a17090301c300b001e0b60f5de3mr244611plh.7.1715013037261; Mon, 06 May 2024 09:30:37 -0700 (PDT) Received: from www.outflux.net ([198.0.35.241]) by smtp.gmail.com with ESMTPSA id a14-20020a170902ecce00b001e41e968a61sm8414660plh.223.2024.05.06.09.30.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 May 2024 09:30:36 -0700 (PDT) Date: Mon, 6 May 2024 09:30:36 -0700 From: Kees Cook To: Oscar Salvador Cc: Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Michal Hocko , Vlastimil Babka , Marco Elver , Andrey Konovalov , Alexander Potapenko , Alexandre Ghiti , syzbot+41bbfdb8d41003d12c0f@syzkaller.appspotmail.com Subject: Re: [PATCH v4 2/4] mm,page_owner: Fix refcount imbalance Message-ID: <202405060930.67CDA64@keescook> References: <20240404070702.2744-1-osalvador@suse.de> <20240404070702.2744-3-osalvador@suse.de> <202405060754.4405F8402F@keescook> 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: On Mon, May 06, 2024 at 05:41:28PM +0200, Oscar Salvador wrote: > Yes, but I wanted to get the handle so I can match it with the > backtrace. Ah! Yes, that makes sense. Thanks! -- Kees Cook