From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=192.198.163.17 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792426132; b=HAgCE+8yBnRtmUxgHamHW+uaaEdPTHqLBp+JeiD9mBdtaRoB7d5FwVsyv7p95dsPwGIY WIuGkdbMB2UvTIL6NhumDz5U5NALXxEq0cXV0kotoIyhIdVP8Oii8QFIk8YKyokT93z/L dxxb1ztZR1YUDWD5m59e6BopC5K0tzR9Sk94aPY7gMGZPClF5A9X/ZNUWojzsBPPNImP4 KwP/KmsLBTw3jT7Cc5NL8uZ+zq+BSrYQJRE4XbygPc0GlBjSF1KhesIGc950hNxGHtqME k5QoN1g6wVRpzjsvNpSFXPoSMTBHjEx6uGiguBNN/r7M4QsLgzyexRBgv9JA7njc51g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792426132; h=DMARC-Filter:DKIM-Signature:X-CSE-ConnectionGUID:X-CSE-MsgGUID: X-IronPort-AV:X-IronPort-AV:Received:X-CSE-ConnectionGUID: X-CSE-MsgGUID:X-ExtLoop1:X-IronPort-AV:Received:Received:Date:From:To: Cc:Subject:Message-ID:References:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; bh=poUPYDGsy3A3qaMJ9gfhwR/7k9/rzOgPJFd+QviZSu4=; b=dCBuWDXFD4WxyT7J1U7lfYOdzQnosFhEhkKG5oxaJUwpgKhCmtsoeXfpAh6/QPWfTL0l mM3bHRChR0APpXVcUM+H9LqTP0AWgoTCEl3QE56yut7FUQVi5elPe5z9ZMEGy3o0yTKgg JzBuRU+1qsvxnbCC1Xi4V1c0XhTnlAHMlLMtR+QqPyLooDzx7TuuNtxMOFIhZH/WbA9b8 v9MokzjqttUlXaSM8Y9p8MUgbxchvNCOzLqxbZmAlpeDeeQS6ztuJqsi2Akfivg/bljGY ibY0FqlHoZZ3DQlyzIlPtR8j+X9lDj3BpA01O2Md3w5oZsYsXqgKfJl4/cBeDGgI1WA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=KugTD+Zt; arc=none smtp.remote-ip=192.198.163.17 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 92394606A319; Mon, 19 Oct 2026 16:08:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 92394606A319 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=KugTD+Zt DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1792426131; x=1823962131; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=tYhhhR8eq9pKvNN5fuGWDReozGHrqdOYBbHVTcKvxBc=; b=KugTD+Zt7PqoHvngfvaYdD3o+2ULemqzgkL7KUWAJiYyv+rG3iea1Dta 5JAe+fUthnIHrlygmvqESBNL8qHE9cUvnlcuHHpLVQbO2RRh3iTyeiGFC 27PMgarxWwKbK5m5pM0in6yvsBE0tU4fQKekEIxA8g2ADARmcUen09M6j nkBQbuumik+j3+ixvSu+6Tn2TVqDLzCymQzJnxB6KcW3YvfIPfeFBNolR Rs5ZOF+B6za9Cog7oFDx90n0wXCJ10+2aVsnZQESK0UrhxEn4Fv3KZu2v n2W3h2P8q1SS+HCXvm7D95l1Z5eJD31XONn1v4RM3/zKSrpkXHQPfS770 A==; X-CSE-ConnectionGUID: 5m5KIbayQASJcPXGdismwA== X-CSE-MsgGUID: zECmI0blRMKATO8hOjuUhQ== X-IronPort-AV: E=McAfee;i="6800,10657,11940"; a="1115517" X-IronPort-AV: E=Sophos;i="6.27,167,1787036400"; d="scan'208";a="1115517" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa111.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Oct 2026 09:08:50 -0700 X-CSE-ConnectionGUID: jYCtRLUTTomG131lll5p9A== X-CSE-MsgGUID: JXzuwFcEQkOgnWp/q2l9oQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,167,1787036400"; d="scan'208";a="2452806" Received: from lkp-server01.sh.intel.com (HELO 0caa9d2d175c) ([10.239.97.150]) by orviesa007.jf.intel.com with ESMTP; 19 Oct 2026 09:08:47 -0700 Received: from kbuild by 0caa9d2d175c with local (Exim 4.98.2) (envelope-from ) id 1xIpum-00000000Lv4-1g5f; Mon, 19 Oct 2026 16:08:44 +0000 Date: Tue, 20 Oct 2026 00:07:48 +0800 From: kernel test robot To: David Laight , Andrew Morton , Petr Mladek , Kees Cook , linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, bpf@vger.kernel.org, Jim Cromie , Lorenzo Stoakes Cc: 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: <202610192356.CItNLOke-lkp@intel.com> References: <20261018155206.132411-4-david.laight.linux@gmail.com> X-Mailing-List: linux-kbuild@vger.kernel.org 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-Disposition: inline In-Reply-To: <20261018155206.132411-4-david.laight.linux@gmail.com> 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: nios2-randconfig-1000-20261019 (https://download.01.org/0day-ci/archive/20261019/202610192356.CItNLOke-lkp@intel.com/config) compiler: nios2-linux-gcc (GCC) 10.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261019/202610192356.CItNLOke-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/202610192356.CItNLOke-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/kallsyms_selftest.c:70:1: warning: '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' defined but not used [-Wunused-variable] 70 | The_time_has_come_the_Walrus_said_To_talk_of_many_things\ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 71 | _Of_shoes_and_ships_and_sealing_wax_Of_cabbages_and_kings\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 72 | _And_why_the_sea_is_boiling_hot_And_whether_pigs_have_wings\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 73 | \ | ~ 74 | _O_Oysters_said_the_Carpenter_Youve_had_a_pleasant_run\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 75 | _Shall_we_be_trotting_home_again_But_answer_came_there_none\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 76 | _And_this_was_scarcely_odd_because_Theyd_eaten_every_one\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 77 | \ | ~ 78 | _The_moon_was_shining_sulkily_Because_she_thought_the_sun\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 79 | _Had_got_no_business_to_be_there_After_the_day_was_done\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 80 | _Its_very_rude_of_him_she_said_To_come_and_spoil_the_fun | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/kallsyms_selftest.c:70:1: note: in definition of macro 'kallsyms_very_long_name' 70 | The_time_has_come_the_Walrus_said_To_talk_of_many_things\ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 71 | _Of_shoes_and_ships_and_sealing_wax_Of_cabbages_and_kings\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 72 | _And_why_the_sea_is_boiling_hot_And_whether_pigs_have_wings\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 73 | \ | ~ 74 | _O_Oysters_said_the_Carpenter_Youve_had_a_pleasant_run\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 75 | _Shall_we_be_trotting_home_again_But_answer_came_there_none\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 76 | _And_this_was_scarcely_odd_because_Theyd_eaten_every_one\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 77 | \ | ~ 78 | _The_moon_was_shining_sulkily_Because_she_thought_the_sun\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 79 | _Had_got_no_business_to_be_there_After_the_day_was_done\ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 80 | _Its_very_rude_of_him_she_said_To_come_and_spoil_the_fun | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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 +70 kernel/kallsyms_selftest.c 67 68 /* This is 509 characters, compresses to about 330 */ 69 #define kallsyms_very_long_name \ > 70 The_time_has_come_the_Walrus_said_To_talk_of_many_things\ 71 _Of_shoes_and_ships_and_sealing_wax_Of_cabbages_and_kings\ 72 _And_why_the_sea_is_boiling_hot_And_whether_pigs_have_wings\ 73 \ 74 _O_Oysters_said_the_Carpenter_Youve_had_a_pleasant_run\ 75 _Shall_we_be_trotting_home_again_But_answer_came_there_none\ 76 _And_this_was_scarcely_odd_because_Theyd_eaten_every_one\ 77 \ 78 _The_moon_was_shining_sulkily_Because_she_thought_the_sun\ 79 _Had_got_no_business_to_be_there_After_the_day_was_done\ 80 _Its_very_rude_of_him_she_said_To_come_and_spoil_the_fun 81 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki