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[82.69.66.36]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a1f2c1e0e6sm25118305e9.0.2026.10.19.14.25.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Oct 2026 14:25:25 -0700 (PDT) Date: Mon, 19 Oct 2026 22:25:24 +0100 From: David Laight To: kernel test robot Cc: Andrew Morton , Petr Mladek , Kees Cook , linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, bpf@vger.kernel.org, Jim Cromie , Lorenzo Stoakes , llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Linux Memory Management List , Luis Chamberlain , Andrey Grodzovsky , Steven Rostedt Subject: Re: [PATCH v2 next 03/15] kallsyms: Improve selftest test_perf_kallsyms_lookup_name() output Message-ID: <20261019222524.695a4d31@pumpkin> In-Reply-To: <202610200434.qSHPOyDo-lkp@intel.com> References: <20261018155206.132411-4-david.laight.linux@gmail.com> <202610200434.qSHPOyDo-lkp@intel.com> X-Mailer: Claws Mail 4.1.1 (GTK 3.24.38; arm-unknown-linux-gnueabihf) X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Tue, 20 Oct 2026 04:57:54 +0800 kernel test robot wrote: > Hi David, > > kernel test robot noticed the following build warnings: > > [auto build test WARNING on akpm-mm/mm-everything] > [also build test WARNING on linus/master v7.3] > [cannot apply to next-20261016 next-20261016] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > url: https://github.com/intel-lab-lkp/linux/commits/David-Laight/kallsyms-scripts-kallsyms-c-Avoid-overrunning-on-stack-buffer/20261018-165152 > base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything > patch link: https://lore.kernel.org/r/20261018155206.132411-4-david.laight.linux%40gmail.com > patch subject: [PATCH v2 next 03/15] kallsyms: Improve selftest test_perf_kallsyms_lookup_name() output > config: arm64-randconfig-1000-20261019 (https://download.01.org/0day-ci/archive/20261020/202610200434.qSHPOyDo-lkp@intel.com/config) > compiler: clang version 21.1.8 (https://github.com/llvm/llvm-project 2078da43e25a4623cab2d0d60decddf709aaea28) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261020/202610200434.qSHPOyDo-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/202610200434.qSHPOyDo-lkp@intel.com/ > > All warnings (new ones prefixed by >>): > > >> kernel/kallsyms_selftest.c:82:12: warning: unused variable 'The_time_has_come_the_Walrus_said_To_talk_of_many_things_Of_shoes_and_ships_and_sealing_wax_Of_cabbages_and_kings_And_why_the_sea_is_boiling_hot_And_whether_pigs_have_wings_O_Oysters_said_the_Carpenter_Youve_had_a_pleasant_run_Shall_we_be_trotting_home_again_But_answer_came_there_none_And_this_was_scarcely_odd_because_Theyd_eaten_every_one_The_moon_was_shining_sulkily_Because_she_thought_the_sun_Had_got_no_business_to_be_there_After_the_day_was_done_Its_very_rude_of_him_she_said_To_come_and_spoil_the_fun' [-Wunused-variable] > 82 | static int kallsyms_very_long_name = 1; > | ^~~~~~~~~~~~~~~~~~~~~~~ > kernel/kallsyms_selftest.c:69:33: note: expanded from macro 'kallsyms_very_long_name' > 69 | #define kallsyms_very_long_name \ > | ^ > 1 warning generated. Duplicate, depends on config options. David > > > vim +/The_time_has_come_the_Walrus_said_To_talk_of_many_things_Of_shoes_and_ships_and_sealing_wax_Of_cabbages_and_kings_And_why_the_sea_is_boiling_hot_And_whether_pigs_have_wings_O_Oysters_said_the_Carpenter_Youve_had_a_pleasant_run_Shall_we_be_trotting_home_again_But_answer_came_there_none_And_this_was_scarcely_odd_because_Theyd_eaten_every_one_The_moon_was_shining_sulkily_Because_she_thought_the_sun_Had_got_no_business_to_be_there_After_the_day_was_done_Its_very_rude_of_him_she_said_To_come_and_spoil_the_fun +82 kernel/kallsyms_selftest.c > > 81 > > 82 static int kallsyms_very_long_name = 1; > 83 > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki