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 ADBA5514770; Fri, 2 Oct 2026 20:10:08 +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=1790971809; cv=none; b=OL99+xNjxKCanGuLkSCXEW94Dq+Cb9J4LiWQdw+R3hiGt3ZrQjeCQKG/UQddlJrRdnBovnSNv21V+XR5jSySm7cUQe7tDCO/Ymyuv5QOzVy8XMXHnsA3+Z42JAznlTqKl649kv/q2RmY88H55LM6zG9xiXOkbmsWUXmqaVGxUEo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790971809; c=relaxed/simple; bh=AnexBTqckTGgnVZSbd9fIKKXIdiXvyqa+jK1d05HILg=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=PjD39MK1FOELTJR3ssxcarq4emQ/3s1hqXMztXBr0S12w3EZOfzqJOfXn+h/hfRCdA97DVstQPIRv2yjZnRBZ7l19WwS+dLfzstXPk6jl3IgjpVqefZsCI30fIrlozn6B4ti/by8CbbLMLyry+KMek0kTkFbx3YlPo+XSv7Juvs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Hjuwagk9; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Hjuwagk9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 442651F00893; Fri, 2 Oct 2026 20:10:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790971808; bh=jxjwPiIKbDU6MasNt4osX21VBe+cd6oHzOjlTu73SmI=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=Hjuwagk9La0PlJpyZlFaaLG/EPnfiL5Om9kQFRXuOpENKWtvlydE+l54pbq1e8tAr m5T4DYAkPWbNsihZdAnQifeDv30oDgqgYPfOFQOBhnYr2NuOX8jbI43RKcFF4DZ1kU e45gv0Z1tzsDmAAjvHs+POd4VDgrr9bJ/P8+ROSs3WiKUe/+oia367/AIGSE0bLJGa +7jHzRgH5/SfWSam0ky2sK6uGXU/k6I/5jnWGH8xIPNsm10vHUB4gdVv1EqZ924bsU l6sVvwJffF0zf/CtSH7l5QEJO27ouGPSe688DYesO9gLVHuEcaIXb9W9QFd0/3mCVn 9bzb+L9pMcxBg== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 3A3AF3811A72; Fri, 2 Oct 2026 20:10:08 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net v4] net: xilinx: axienet: Free outstanding DMA buffers on dmaengine stop From: patchwork-bot+netdevbpf@kernel.org Message-Id: <179097180677.3568371.6111049801339254960.git-patchwork-notify@kernel.org> Date: Fri, 02 Oct 2026 20:10:06 +0000 References: <20260928184207.2361931-1-suraj.gupta2@amd.com> In-Reply-To: <20260928184207.2361931-1-suraj.gupta2@amd.com> To: Gupta@aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org, Suraj Cc: radhey.shyam.pandey@amd.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, michal.simek@amd.com, netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Tue, 29 Sep 2026 00:12:07 +0530 you wrote: > In the dmaengine path the driver pre-submits RX buffers and holds > in-flight TX buffers whose SKBs are DMA-mapped by the driver and freed > only in the completion callbacks. On ndo_stop() dmaengine_terminate_sync() > aborts these descriptors without running their callbacks, and the driver > then frees only the ring shells, leaking every SKB still owned by the > engine and its DMA mapping on each ifdown. With 128 RX buffers pre-posted > per channel, the mapping leak can eventually exhaust a limited IOMMU > aperture. > > [...] Here is the summary with links: - [net,v4] net: xilinx: axienet: Free outstanding DMA buffers on dmaengine stop https://git.kernel.org/netdev/net/c/bcf2573a68a8 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html