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Howlett" , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: Re: [PATCH] mm/util: Use kmalloc buckets for kmemdup_nul() Message-ID: <202605220158.VO5WnXl7-lkp@intel.com> References: <20260521124026.work.036-kees@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260521124026.work.036-kees@kernel.org> X-Stat-Signature: hn3g87upwhms8qf8adk5wdpz4knnjyej X-Rspamd-Queue-Id: 5BE8512000B X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1779385635-118231 X-HE-Meta: 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 LPxaUIkd GOoNTonrrPU2EMvmO0dTdAMYgHQ3TXlgdGsmDk4DWwFWrhhuw9j0CQnvGHiqbDDEkFRhOwn24FTc9/JNN4sstmY2xrtlxrTkfxOCIos/Bh62+j1fWWsFtyxqM+wtpJXM4KH0KjKXXSqrChpBW9Z+7UCTv/XR2aRaeKXOri5zwkY4nzzn/Qiul/aOUuDgYjnK7/FARD2wnmnM68H7ZRqnxf93VGEogc2aL4e+SpZgnhnfnfoUZMOG31pywQ5Q1Y4MnKoJnqP68Xx0P8uKfp/JMzePBI56sWeBcM/JMs3toUxmsjLdj6wG6B8h579IcoLQGTR62WZFgw4r1lH5nn+I2W2MRzIZwQS2B4x/NR63oDb1MVm8l7pnptlOjrQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Kees, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Kees-Cook/mm-util-Use-kmalloc-buckets-for-kmemdup_nul/20260521-204404 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20260521124026.work.036-kees%40kernel.org patch subject: [PATCH] mm/util: Use kmalloc buckets for kmemdup_nul() config: s390-allnoconfig (https://download.01.org/0day-ci/archive/20260522/202605220158.VO5WnXl7-lkp@intel.com/config) compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 5bac06718f502014fade905512f1d26d578a18f3) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260522/202605220158.VO5WnXl7-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202605220158.VO5WnXl7-lkp@intel.com/ All warnings (new ones prefixed by >>): mm/util.c:37:22: warning: variable 'user_buckets' set but not used [-Wunused-but-set-global] 37 | static kmem_buckets *user_buckets __ro_after_init; | ^ >> mm/util.c:38:22: warning: variable 'nul_buckets' set but not used [-Wunused-but-set-global] 38 | static kmem_buckets *nul_buckets __ro_after_init; | ^ 2 warnings generated. vim +/nul_buckets +38 mm/util.c 36 > 37 static kmem_buckets *user_buckets __ro_after_init; > 38 static kmem_buckets *nul_buckets __ro_after_init; 39 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki