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 AAA24321F42; Tue, 17 Feb 2026 11:10:14 +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=1771326614; cv=none; b=Bjv9AhJvTEP6HNeNY2OPKWMrTvVcd63kGMFABKS7I5XRzLeSrieN/KiF0gdpE7HEfJhyPP5dh1ibQ0DThx1XiQVI/bD9sMw5xtYbw/iGt2B7Zw5PbveedNti7wql4vAPg8UT4bIFizcrnFAZsf3H454hq8QRZP2ToU6YfldhfQY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771326614; c=relaxed/simple; bh=HYQmNgXbaSDujkNgDA1fNaE5PjxPfwLo/OS9lM7Yecw=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=p25EDQzknj8f9YukmWbZ2+AkYJoHcPv9Ja+W2x3pqKSE4SC0YxNvy6WVfOCwl2tOwZYKePmpUO78d/8NwUZ/pniqTG1br0krVCgjW8Pf+Fdl2R4fPFS/at9W6H+ipXulQyvXXaI8z78Lom3bQWSwGjgzVRS1UfZgZXPEKJobVw8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XNWndunu; 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="XNWndunu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 81010C4CEF7; Tue, 17 Feb 2026 11:10:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771326614; bh=HYQmNgXbaSDujkNgDA1fNaE5PjxPfwLo/OS9lM7Yecw=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=XNWndunu9rdO3xm0aWJNp9GJ46fJuu/ZKAlJXhb3G3FILuxuDgIN7Q/hW8uKEgSEK CLYaM9Y8NqfkArvCnYq7rDbciZulwBUr0pWXdtYZR6SCtQBnaLeQkTFjqIsufK5Sb2 rvlCMBE/fzRRkoKeGyvlhl/gbB0aTxzmbTRomut4GoO6qYgT12LNORAAi8hSPM+XNZ dwow6X4MrrGkC0ZP24hG9th/NUKCHVtC3N43lFYwKjVpaCdVpBS/lKWgtOxxxQmsQG 20Ru8Z9bMk9fFtIqlAxqcPVlLH+5w9Y4hrQBnVOlemWAVgQRGsHm/Or4gNDl4wfvGt 7gtfn2oV/47eA== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id C22C6380AAD0; Tue, 17 Feb 2026 11:10:07 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net] xen-netback: reject zero-queue configuration from guest From: patchwork-bot+netdevbpf@kernel.org Message-Id: <177132660658.24996.8282922634336932490.git-patchwork-notify@kernel.org> Date: Tue, 17 Feb 2026 11:10:06 +0000 References: <20260212224040.86674-1-n7l8m4@u.northwestern.edu> In-Reply-To: <20260212224040.86674-1-n7l8m4@u.northwestern.edu> To: Ziyi Guo Cc: wei.liu@kernel.org, paul@xen.org, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, andrew.bennieston@citrix.com, xen-devel@lists.xenproject.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Hello: This patch was applied to netdev/net.git (main) by Paolo Abeni : On Thu, 12 Feb 2026 22:40:40 +0000 you wrote: > A malicious or buggy Xen guest can write "0" to the xenbus key > "multi-queue-num-queues". The connect() function in the backend only > validates the upper bound (requested_num_queues > xenvif_max_queues) > but not zero, allowing requested_num_queues=0 to reach > vzalloc(array_size(0, sizeof(struct xenvif_queue))), which triggers > WARN_ON_ONCE(!size) in __vmalloc_node_range(). > > [...] Here is the summary with links: - [net] xen-netback: reject zero-queue configuration from guest https://git.kernel.org/netdev/net/c/6d1dc8014334 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html