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Wed, 14 Oct 2026 05:59:50 -0700 (PDT) Received: from kali ([169.224.126.44]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a1b481b7f8sm53105485e9.3.2026.10.14.05.59.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Oct 2026 05:59:49 -0700 (PDT) From: Ali Firas To: netdev@vger.kernel.org, idosch@nvidia.com Cc: kuba@kernel.org, pabeni@redhat.com, davem@davemloft.net, edumazet@google.com, andrew+netdev@lunn.ch, horms@kernel.org, razor@blackwall.org, roopa@nvidia.com, shuah@kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net-next v4 0/7] vxlan: vnifilter: bound a single request and account per-VNI memory Date: Wed, 14 Oct 2026 15:59:34 +0300 Message-ID: <20261014125934.413864-1-alishmery18@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <179198195143.320699.130100546123857623120@kernel.org> References: <179198195143.320699.130100546123857623120@kernel.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On 10/14/26 15:45, netdev-bot+sinfo@kernel.org wrote: > - How the issue was discovered Manual source review of the vnifilter netlink path, after noticing that vxlan_mdb.c range-validates its VNI attributes while vxlan_vnifilter.c does not. Prepared with LLM assistance, as the Assisted-by: tags say. > - Whether the issue was actually triggered, or is only theoretical Triggered and measured in QEMU, from a user namespace holding CAP_NET_ADMIN only inside it. There is no stack trace to quote: the symptoms are rtnl hold time and uncharged memory growth, not a crash. The changelogs carry the numbers. The cover letter states this is a policy and hardening change rather than a fix, targeting net-next with no Fixes tag, at Jakub's request: https://lore.kernel.org/netdev/20260921150904.65a704eb@kernel.org/