From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7C275188596; Wed, 15 Jul 2026 04:46:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784090766; cv=none; b=HXVId/nvYSwSWGGpV/+o3uGoESD/C27MNNxdfkuqY6ws6yhfseEq8ZhN/zx/DiGQnux+qYwVcKu8EJz5Fxj261XWtSqiiQ2qrHyXRP29vMHdY88HKnRysfOhVDKisDp9oj+Ypo1620LHBEip5SqeW4TDEsrFK1ZrU2YGKT1rhB8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784090766; c=relaxed/simple; bh=EQs7O/KsN/wK8A+H5ZylPYHQYmQjSimXgQsiXtNU6b4=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=D4HdSRmT4+uQIg4gZI9jlolevr0P0aUDkHAL4tnl1yrq1TSIvA3mYBzabCsQ934t7BgqPmS21B7pWCOZQDo26Ya5dT1586YSEYH+hc1Pd8FVnT3o0S1WmjPQgc6UTXyCPEMS9GNbzT+gLhMtFv0Y28K9Rr/YXI217Eiss6+X/zY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=q4O8mCN2; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="q4O8mCN2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B0311F000E9; Wed, 15 Jul 2026 04:46:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1784090765; bh=yPSXgtZyZUjPzhY0+tGPbfG3fWnFA8alzR4dcKz8MY4=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=q4O8mCN2Wldnjn2dROG4NkiHVkge2rzmi9u30M/YOygz85Hzobi2j0PY1EBOS2f75 vi70A6NF+w51j7g7FpFqmM30I7/b33bWqJk8/OxKpLUoeJsckqqCxZDh9FyRENit/G 2LV3lx5ZSMX8q/wLIeXQU3jBZd3EuN/KTX5kh49I= Date: Tue, 14 Jul 2026 21:46:04 -0700 From: Andrew Morton To: SJ Park Cc: stable@vger.kernel.org, Brendan Higgins , David Gow , Fernand Sieber , Leonard Foerster , Quanmin Yan , SeongJae Park , Shakeel Butt , damon@lists.linux.dev, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v1.1 0/6] mm/damon: unurgent fixes for infinite loop, NULL de-ref and races Message-Id: <20260714214604.10fc4c786277eaed523d0724@linux-foundation.org> In-Reply-To: <20260715031002.108504-1-sj@kernel.org> References: <20260715031002.108504-1-sj@kernel.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: damon@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Tue, 14 Jul 2026 20:09:55 -0700 SJ Park wrote: > Sashiko found a few issues in DAMON that could cause infinite loop, NULL > dereference and monitoring results degradation. The first two sounds > scary but the infinite loop happens only under unreasonable user setup. > The NULL dereference is only in a unit test. Monitoring results > degradation is trivial since it is only best-effort, and those happens > from only unlikely races. Still those are bugs that better to fix if > possible. Fix those. > Subject: [PATCH v1.1 0/6] ... So... what is the significance of "1.1" here?