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X-CSE-ConnectionGUID: Pa7IGg3JRmS+YjPqlfYJ0A== X-CSE-MsgGUID: vGtVhjiHRa64IdITg4MSaw== X-IronPort-AV: E=McAfee;i="6800,10657,11697"; a="82618745" X-IronPort-AV: E=Sophos;i="6.21,283,1763452800"; d="scan'208";a="82618745" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Feb 2026 10:57:57 -0800 X-CSE-ConnectionGUID: PtIeTR/jRY+jT+Spna1GSA== X-CSE-MsgGUID: 3ZsBTh6nQpaAKNUUFYRqfA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,283,1763452800"; d="scan'208";a="216538346" Received: from lkp-server01.sh.intel.com (HELO 765f4a05e27f) ([10.239.97.150]) by orviesa004.jf.intel.com with ESMTP; 10 Feb 2026 10:57:55 -0800 Received: from kbuild by 765f4a05e27f with local (Exim 4.98.2) (envelope-from ) id 1vpsvo-00000000pJw-1Mbo; Tue, 10 Feb 2026 18:57:52 +0000 Date: Wed, 11 Feb 2026 02:57:03 +0800 From: kernel test robot To: Petr Pavlu , Steven Rostedt , Masami Hiramatsu Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Mathieu Desnoyers , Tom Zanussi , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Petr Pavlu Subject: Re: [PATCH 1/5] tracing: Fix checking of freed trace_event_file for hist files Message-ID: <202602110247.8HeuKXss-lkp@intel.com> References: <20260210113427.1068932-2-petr.pavlu@suse.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260210113427.1068932-2-petr.pavlu@suse.com> Hi Petr, kernel test robot noticed the following build errors: [auto build test ERROR on 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b] url: https://github.com/intel-lab-lkp/linux/commits/Petr-Pavlu/tracing-Fix-checking-of-freed-trace_event_file-for-hist-files/20260210-194023 base: 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b patch link: https://lore.kernel.org/r/20260210113427.1068932-2-petr.pavlu%40suse.com patch subject: [PATCH 1/5] tracing: Fix checking of freed trace_event_file for hist files config: sparc64-defconfig (https://download.01.org/0day-ci/archive/20260211/202602110247.8HeuKXss-lkp@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260211/202602110247.8HeuKXss-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/202602110247.8HeuKXss-lkp@intel.com/ All errors (new ones prefixed by >>): >> kernel/trace/trace_events.c:1300:2: error: call to undeclared function 'hist_poll_wakeup'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 1300 | hist_poll_wakeup(); | ^ 1 error generated. vim +/hist_poll_wakeup +1300 kernel/trace/trace_events.c 1289 1290 static void remove_event_file_dir(struct trace_event_file *file) 1291 { 1292 eventfs_remove_dir(file->ei); 1293 list_del(&file->list); 1294 remove_subsystem(file->system); 1295 free_event_filter(file->filter); 1296 file->flags |= EVENT_FILE_FL_FREED; 1297 event_file_put(file); 1298 1299 /* Wake up hist poll waiters to notice the EVENT_FILE_FL_FREED flag. */ > 1300 hist_poll_wakeup(); 1301 } 1302 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki