From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 2C53F125B9 for ; Fri, 11 Jul 2025 00:37:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752194226; cv=none; b=tZJkahKsZIg8LA6MRnenFxGtp7tCdJBPDwu6rS3ff7aVO+zQ3POy8w4UO4y9oJYHZVQUTE76DVVYP3HJ/1xkGupvh4Y3EJEgbnhck3J6gIPjFLafiwVjuCdUSc6IAjkYzZiEsBUWmBjZ14jMnk6W+uhcfK7W63h+GR4ycjfeH94= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752194226; c=relaxed/simple; bh=7u5+cf2nJZoDvmfkGRcyh5Fe4HAs8tplHaitTwUCHWk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=A1WohzE4HpGl+OwNGpwKzddXAJvn2ezob37xdDoNfUV4uxlqzOFZKpnQDazHPbCkziJfkyQ13vWGILvEa7Z2bJpA2epp60cW4134NttNC82g6HMJmrdbClqIDuOmQc4X+agldDe3av4tpUzlfyElvNDwf5qzaOhoAh09A+625sQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Sqm12vd9; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Sqm12vd9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 37622C4CEE3; Fri, 11 Jul 2025 00:37:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1752194225; bh=7u5+cf2nJZoDvmfkGRcyh5Fe4HAs8tplHaitTwUCHWk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Sqm12vd9TY/Nk7pcL72xtGHsxJB2aGz4GX4/Iy7SCuXKfdNSIeMpjgT3p2SJAHMD7 jRJT1IWcHOYotojPgRMOhsQbiwVP33H7vUwcKMslz51Z3cLD8ylN4aA2pwq6cqzpZr M4HeN/UPTISa4xw//cuSX1IENDvGQ8OY6c1RdOgZ+AWM0Y1r3+i78mXfQBr9yaQMTU fw3PH0ByiCTkJZL6xvafI0/Zyl3fKDdoAbTSPctw4If+pFHGxiVbGee9KWaKlXo0e1 6VJ13eKdGROA34cUpAhBBt4Xb9B9arIUfdrGYEUHeN7vBg8FpZ16qSu90MW+jINSoE 2nK05e6x/oz2g== Date: Thu, 10 Jul 2025 18:37:03 -0600 From: Keith Busch To: Klara Modin Cc: Christoph Hellwig , axboe@kernel.dk, sagi@grimberg.me, ben.copeland@linaro.org, leon@kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org Subject: Re: [PATCH] nvme-pci: fix dma unmapping when using PRPs and not using the IOVA mapping Message-ID: References: <20250707125223.3022531-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-block@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 Fri, Jul 11, 2025 at 02:25:12AM +0200, Klara Modin wrote: > This patch seems to introduce a memory leak, causing the slab to grow > continuously. The easiest way I found to trigger it is along the lines > of > > # dd if=/dev/nvme0n1 of=/dev/null bs=8M Doh! Thank you for the report, I appreciate notification for regressions on the -next branches. I'll look into it tomorrow if hch doesn't beat me to it.