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 230483FDC14; Tue, 9 Jun 2026 11:20:07 +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=1781004009; cv=none; b=lvUNzP7R6lacPsknyrWATVgq14jJZhTrD6pXR9HV6Id4NfCsCn0HDSRGZNpcBZKAJ0kin3/zklJU/yAgomXyUgHhlZjYygDELqbMKVvNCP0moEsbEc12YThjIt/jFsGg28f78FuQgQ5mMkpB07owyYaGojsJ6ocgE97E8qsknB8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781004009; c=relaxed/simple; bh=MBFAi68cJtixTUTtV59+COSQ13IaoHt2+pFDOEIsZ18=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=njYtxYVD4YLp/CuSx41avndFrBWJMc3sej5ma4YI4w6NjAV0iCFt98N+CJFWCvnhoxTbzIEYz4rQAMPx4IRVJZe/x29Lsvjwmeh9vo5wtILrf7TjT3VQOi0airo18Zi/1WkvOTklAQndwrGSIYwtONP+TtsW/Lx79Ohv56pI0ns= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UYe936jy; 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="UYe936jy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A44AB1F00898; Tue, 9 Jun 2026 11:20:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781004007; bh=B+0wrW3LJMtKIonMBpQtLyzYJHDYU4NBKPOvxGEYvMw=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=UYe936jyRJW2+aafPUtPauKXAaeI3cXoBE1GRAj2h103ItuHEZOBZuqbk6Ob8TE8l O2Pcc0ZkQ6h9MBuA+xzTnYSf8qjuSkE8bTSXw/DCxmPEwwE1DOqEaZr8J2lJ753h84 iWePXc63msI4+r+P/x+CjNPSQBr5nOQemGUhRCC24emzDS9gKKgqFTqm9u+Gg56Q4g uN2t09RPf/fi28CmJVADKP1xDGYrTae8C9tecdB0ZTBAdnuBHu9YWBRz5pKNWaD9Uq dRGDnm4wwGJAKBkMj7XTEXAOMskcggjajwitr16ujo9iRlzTXS5zJjMJXQykHnsevG C4kD5vIR10A2A== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 5691039308A0; Tue, 9 Jun 2026 11:20:07 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net v3] hv_netvsc: use kmap_local_page in netvsc_copy_to_send_buf From: patchwork-bot+netdevbpf@kernel.org Message-Id: <178100400590.1968131.4057700163237910047.git-patchwork-notify@kernel.org> Date: Tue, 09 Jun 2026 11:20:05 +0000 References: <20260604165938.32033-1-leontyevantony@gmail.com> In-Reply-To: <20260604165938.32033-1-leontyevantony@gmail.com> To: Anton Leontev Cc: netdev@vger.kernel.org, linux-hyperv@vger.kernel.org, haiyangz@microsoft.com, kys@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, longli@microsoft.com, kuba@kernel.org, pabeni@redhat.com, edumazet@google.com, davem@davemloft.net, stable@vger.kernel.org, linux-kernel@vger.kernel.org Hello: This patch was applied to netdev/net.git (main) by Paolo Abeni : On Thu, 4 Jun 2026 19:59:38 +0300 you wrote: > netvsc_copy_to_send_buf() copies page buffer entries into the VMBus > send buffer using phys_to_virt() on the entry PFN. Entries for the > RNDIS header and the skb linear data come from kmalloc'd memory and > are always in the kernel direct map, but entries for skb fragments > reference page cache or user pages, which on 32-bit x86 with > CONFIG_HIGHMEM=y can live above the LOWMEM boundary. For such a page > phys_to_virt() returns an address outside the direct map and the > subsequent memcpy() faults on the transmit softirq path, which is > fatal. > > [...] Here is the summary with links: - [net,v3] hv_netvsc: use kmap_local_page in netvsc_copy_to_send_buf https://git.kernel.org/netdev/net/c/004e9ecfe6c5 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html