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b=Onc99M3HOtj4PWSLc24/2tOMzX3rWDXGz3ckeBHfIU0L2Kx/ftQMTwST75DC33knk SrqQpfz11owMFv3jocga3xHpZlHzf4JaUlPUEUHlBnYNDqFAqruWqyGlNKaVD7oaOa N4icBkVOgChGdxppM1XCsBr4wFfxyFEHZ+g2/8wvtVjlvXjL0EBxPkHP/WDVfi6JJX Y0tMWvaLZg8XJ98O/kb9stEgg71rvODX+68MC7I0REFzn7B7thNF3SdSSwHRs37Eza j/d3RvKN1k52jpPorH+10qyHTaZOJGBRDIRuuYWkjdsVv4A9NioJyhuNnjsEgXITh4 UlX6r3JL6AN+w== Date: Mon, 3 Mar 2025 08:39:33 -0800 From: Kees Cook To: jeffxu@chromium.org Cc: akpm@linux-foundation.org, jannh@google.com, torvalds@linux-foundation.org, vbabka@suse.cz, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, adhemerval.zanella@linaro.org, oleg@redhat.com, avagin@gmail.com, benjamin@sipsolutions.net, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, jorgelo@chromium.org, sroettger@google.com, hch@lst.de, ojeda@kernel.org, thomas.weissschuh@linutronix.de, adobriyan@gmail.com, johannes@sipsolutions.net, pedro.falcato@gmail.com, hca@linux.ibm.com, willy@infradead.org, anna-maria@linutronix.de, mark.rutland@arm.com, linus.walleij@linaro.org, Jason@zx2c4.com, deller@gmx.de, rdunlap@infradead.org, davem@davemloft.net, peterx@redhat.com, f.fainelli@gmail.com, gerg@kernel.org, dave.hansen@linux.intel.com, mingo@kernel.org, ardb@kernel.org, mhocko@suse.com, 42.hyeyoo@gmail.com, peterz@infradead.org, ardb@google.com, enh@google.com, rientjes@google.com, groeck@chromium.org, mpe@ellerman.id.au, aleksandr.mikhalitsyn@canonical.com, mike.rapoport@gmail.com Subject: Re: [PATCH v8 5/7] mseal sysmap: uprobe mapping Message-ID: <202503030839.6333DA9@keescook> References: <20250303050921.3033083-1-jeffxu@google.com> <20250303050921.3033083-6-jeffxu@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250303050921.3033083-6-jeffxu@google.com> X-Stat-Signature: xoz6dnq519j5fd8f13hk6ryacuzuigpp X-Rspamd-Queue-Id: 02E1E1C001B X-Rspamd-Server: rspam06 X-Rspam-User: X-HE-Tag: 1741019976-86960 X-HE-Meta: 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 pqkE08fa fpZQLnTxvgP6q1BObo89hsQCglFQn6WhvVRSt19/TLTWZYpE8mXWRuJje7z53ChAhBL0npTQAeGCLVywk7Q1YkkUXlGFnm9fkOorNAbsMR8UIBokHX6Pchffvl1Wsop/lYhS63vHtothJkyTMmakqwDg79tqVLYWv6JIHEmz15C4v2tsXUi9L/r92uYBvGrRJVL7EvEbv7YM3jpiaRacdWz7Pw0rlzZUe8L5H9aVlcjwI9S6Nha64bP2fwRAAsY2ztJtpo9tPXKwnUdxM9Ys3OzeiY3cVM0b4gr2grURm1KxyHYAXRLQhPVQSmLmRPAzC76lYThi61jtlXFwrXcxNNOl/nQ/12ORKEEJZjeA3alEspAmQk1hI66zK+g== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000004, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, Mar 03, 2025 at 05:09:19AM +0000, jeffxu@chromium.org wrote: > From: Jeff Xu > > Provide support to mseal the uprobe mapping. > > Unlike other system mappings, the uprobe mapping is not > established during program startup. However, its lifetime is the same > as the process's lifetime. It could be sealed from creation. > > Test was done with perf tool, and observe the uprobe mapping is sealed. > > Signed-off-by: Jeff Xu Reviewed-by: Kees Cook -- Kees Cook