From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794438009; b=K+zunBXZ7MzCXKUMUAn7rmOSd9ttIrkEWUMT2r3pWYQ6NDvcaV8tjY917lu4ofWFyIG3 zMstKwcPt25dfeLIs4j46gaT7nZRFRqzCa1kbQRyejouUliKF3oZEBsVgVjveC/Ma/jGc OiZq/1SJSpl13aBrR0KJ/rSwe1K1fCSGhXw96hMq0Un1HyXHSMB7oDJq74Be3QeFsIMBi 0EJunnnsLhEmDkMBWhNQREZJ0Iui/cAMbKWdhczRlz6S3LiKuAxrG41HhMIOgtMWweCf7 hDRfOgNRWh+nfHm4oF6SHqW10PsLdVKvptrEbT8McXjAQcODql2f27elYRLovpMGhlQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794438009; h=Received:DKIM-Signature:Received:Content-Type:MIME-Version: Content-Transfer-Encoding:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; bh=u/lyJaSf0jh00R25h2n09r2vJy/Cqs58RLY5lnto2rE=; b=FmvC6UJMpfYCjhLcpEp+k3eG+hFX8R7QFM2TeMBetUNbogD9oWLG1jtLoeg1ZE2f57nE XF/gPfdCFK3yVrRvf9n7ZZ3WO5t5dyiaSKR1aksfofC2tIbxWU+vxADMLt6F52dYBPkCl YxfyUQ2I64ZkjKjA08sY1eAIwjFIf9iL6ZzBNtEWSaPKC7Dois17Zt04tr22NaMcxvOj3 C77jB8AXRoOVkL4HWoaDD6I5A5HFcNciD4mb1rEIsF2/KBWUJFqpH+e8qAQKRg/CRZ3sW yOUlKtaVlmnAaRl/LlQlwq0mZWNYTPTjCxs2qCV4+SCEqqj1JU7QPoPeuebZdpVKvFw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=DDkY0QQ2; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 17891606A327; Wed, 11 Nov 2026 23:00:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=DDkY0QQ2 Received: by smtp.kernel.org (Postfix) with ESMTPSA id A6F171F00A05; Wed, 11 Nov 2026 23:00:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794438008; bh=u/lyJaSf0jh00R25h2n09r2vJy/Cqs58RLY5lnto2rE=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=DDkY0QQ2gyiQj9ji51vw1ZNaVYF3+upGlifhK6ePRIcggKHK1w8XPNJhXs28g7RKE gT4Ohpc5ZbBeT8JBO9VkDCdCH2FnMiGcZ4Z38Y9Wlm4vzbDWDjTr716DCupP25yLFZ ch1k50MThxiu0F3UeqJLxGwgjW3W6N/1YyPqyrvnMsUUlgIORCVswwj3xMusonEZKw Xg//C/lQE1nNZMw9sFcVhwBynT8seZoE7iVa+eBIlNKOwRNb9cHW6qERGjDKi7DBJG UQkh9KGI2I7xj5ctiE6r7cD5jSn8d10U2IU70f6lMQfWNtt2z2i4bbzLOXVJr3IalU jT7sOspQokNJg== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 9B266391AFC6; Wed, 11 Nov 2026 23:00:08 +0000 (UTC) Content-Type: text/plain; charset="utf-8" X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net] net: ena: Keep the RX buffer mapped if skb allocation fails From: patchwork-bot+netdevbpf@kernel.org Message-Id: <179443800718.1692642.15271790587054510634.git-patchwork-notify@kernel.org> Date: Wed, 11 Nov 2026 23:00:07 +0000 References: <20261109-ena-rx-skb-alloc-fail-v1-1-aee2927cb51f@debian.org> In-Reply-To: <20261109-ena-rx-skb-alloc-fail-v1-1-aee2927cb51f@debian.org> To: Breno Leitao Cc: akiyano@amazon.com, darinzon@amazon.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@kernel.org, kuba@kernel.org, pabeni@redhat.com, shayagr@amazon.com, harry@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@meta.com Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Mon, 09 Nov 2026 09:14:29 -0800 you wrote: > We are seeing the following issue in production on arm64 EC2 hosts > (m8g.metal-24xl, 64K pages, SMMUv3 in strict mode, 6.18 based kernel). > Right after a global OOM, the SMMU reports F_TRANSLATION write faults > from the ENA device, followed by a burst of: > > WARNING: CPU: 48 PID: 1656834 at drivers/iommu/dma-iommu.c:1242 iommu_dma_unmap_phys+0xf4/0x108 > Call trace: > iommu_dma_unmap_phys+0xf4/0x108 (P) > dma_unmap_phys+0x194/0x2a8 > dma_unmap_page_attrs+0x1c/0x38 > ena_io_poll+0x7bc/0x1790 [ena] > __napi_poll+0x54/0x220 > net_rx_action+0x250/0x520 > > [...] Here is the summary with links: - [net] net: ena: Keep the RX buffer mapped if skb allocation fails https://git.kernel.org/netdev/net/c/3e8e22a1007a You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html