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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Saeed Mahameed , Leon Romanovsky , Tariq Toukan , ath10k@lists.infradead.org, linux-kernel@vger.kernel.org, ath11k@lists.infradead.org, ath12k@lists.infradead.org, wcn36xx@lists.infradead.org, linux-wireless@vger.kernel.org, intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, linux-rdma@vger.kernel.org Subject: Re: [PATCH net-next 0/7] net: Don't use %pK through printk Message-ID: References: <20250414-restricted-pointers-net-v1-0-12af0ce46cdd@linutronix.de> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20250414-restricted-pointers-net-v1-0-12af0ce46cdd@linutronix.de> On Mon, Apr 14, 2025 at 10:26:01AM +0200, Thomas Weißschuh wrote: > Furthermore, restricted pointers ("%pK") were never meant to be used > through printk(). Is this really true? Documentation/admin-guide/sysctl/kernel.rst still has a section on kptr_restrict which talks about dmesg, CAP_SYSLOG, and %pK, which sounds like it's intended. But I'm not highly familiar with this space, so maybe I'm misreading something. (I do see that commit a48849e2358e ("printk: clarify the documentation for plain pointer printing") updated Documentation/core-api/printk-formats.rst.) In any case, even if the advice has changed, it seems (again, to an outsider) a bit much to say it was "never" meant to be used through printk(). Brian