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 C34892DB7BD; Tue, 28 Apr 2026 01:50:55 +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=1777341055; cv=none; b=gpwK3qCjATCeN0obDEnmUmNQHpb14bPwso2IHqFwQUcR6aGEWtndwlJh9a8lgTutxb0jQ5zp193joz4/2Jzj2RKXBLMIX19Y9Pl+SgemcsDPnDPIYF7QoXLwHvgumIPepeQLqjv7mSp011Suv4sMkYFUOHehlU8W2Tp/1NvyZDU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777341055; c=relaxed/simple; bh=blhnT1OhgZfmkBn7i5SypMFOmLdooHT0yasHfhzVmL0=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=O9LNfKYVF4KWkuX8erqfV0s/aLfzgzKKt+ouYBb0AgZ3nq8pCVPhBy3+7eG+DJFpRWy5JgAvVpD38BN/L+0SK+xomhvw63eWLgCO87qYE+tEhJEjgHkRLlJHlWyzl3qmooyo1bZEF11nI9KO7LcGLhg28i3qL+0Z6xpSQWWcgKY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eMidOyBR; 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="eMidOyBR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 84E21C19425; Tue, 28 Apr 2026 01:50:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777341055; bh=blhnT1OhgZfmkBn7i5SypMFOmLdooHT0yasHfhzVmL0=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=eMidOyBRA1zd0r021PRvVAP62k8XR+0zGeFcvzMhPdoFkm730HryHtgSkCMJmDkZD s2XoB2FzkUdYgfSpTJ4Ek3BeLSZ/G7TpXYVF2n75rNLDCDSvjivNcAB2h1xW4HPG07 aW7hii4IVM3hCNxYSPzcQiexyLiWvwFOzhVkscmM7489KDFyED5UdopuWJwbSlKBhy eHg2j/ogESuuma1VgUvpRZECVw7C1d43zLZcCjl4pWmRwmnVlbmjEjwUhuk6VlXpbx DfipXe9YrCfehzKIP8tNLj0gss6Cts7jQPLEcb2IsakwY5UvmcbOftNDS9U0OUQz/8 uozrwBBPBb2Ew== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 02E09392FFDF; Tue, 28 Apr 2026 01:50:14 +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 v5 0/2] net/sched: taprio: fix NULL pointer dereference in class dump From: patchwork-bot+netdevbpf@kernel.org Message-Id: <177734101277.196918.11456842228580431598.git-patchwork-notify@kernel.org> Date: Tue, 28 Apr 2026 01:50:12 +0000 References: <20260422161958.2517539-2-bestswngs@gmail.com> In-Reply-To: <20260422161958.2517539-2-bestswngs@gmail.com> To: Weiming Shi Cc: vinicius.gomes@intel.com, jhs@mojatatu.com, jiri@resnulli.us, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, vladimir.oltean@nxp.com, shuah@kernel.org, xmei5@asu.edu, netdev@vger.kernel.org, linux-kselftest@vger.kernel.org Hello: This series was applied to netdev/net.git (main) by Jakub Kicinski : On Thu, 23 Apr 2026 00:19:57 +0800 you wrote: > Fix a NULL pointer dereference in taprio_dump_class() reachable by an > unprivileged local user on kernels with unprivileged user namespaces > enabled and CONFIG_NET_SCH_TAPRIO=y. The bug allows a local DoS via a > crafted sequence of taprio child-qdisc graft, delete, and class dump. > > Patch 1/2 is the fix: replace NULL entries in q->qdiscs[] with the > global &noop_qdisc singleton so that control-plane dump paths, as well > as the existing NULL guards in the data-plane enqueue/dequeue paths, > cannot deref a NULL child qdisc. > > [...] Here is the summary with links: - [net,v5,1/2] net/sched: taprio: fix NULL pointer dereference in class dump https://git.kernel.org/netdev/net/c/3d07ca5c0fae - [net,v5,2/2] selftests/tc-testing: add taprio test for class dump after child delete https://git.kernel.org/netdev/net/c/a469feed399d You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html