From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 974E8320CD9 for ; Sat, 21 Mar 2026 12:42:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774096962; cv=none; b=EzSuJCGXcTaXp17czdQPgS+2zjSkLWFQ18DG+SG51ZihzDpS+KZYw4XXGqOtnaaWTmgc5BJ3IS6O4XrVW0+L9HhCaiNLPwSBzPB9s7ENWdVms7I8w7BnZtN+CpGgBAPBgcYMZqC6lp9NfvDIFvGQQdvXMoXei2W7ylSEZPctH9Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774096962; c=relaxed/simple; bh=SV6cYAbTVeyj1QhFDwIR9BqvFQ7wqOOroDVXNIONS2g=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=hGQM6w4rmEvI3PhAg9Zmonwhf5Dh4aVAew0FGog7VjsWPJkMMonB0YqVa0t0ZIm+ZOdAwKSTjelVRX2/1f1DoBwBsW6Wts4tKvKWir5NWeP7zh2c435t28uRdrn8w41Edqb38XAHCjweCCj4Rv+1ub06mAgBtk8zanRDS+51TqI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=OfXdW5ty; arc=none smtp.client-ip=192.198.163.16 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) header.d=intel.com header.i=@intel.com header.b="OfXdW5ty" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1774096957; x=1805632957; h=date:from:to:cc:subject:message-id:mime-version; bh=SV6cYAbTVeyj1QhFDwIR9BqvFQ7wqOOroDVXNIONS2g=; b=OfXdW5tyhq0L+ZUDeacaTkl/IhiGvACRquzkc/KVYj7gqXjxVSMuuSPN qqkQFvNH5K0PDS7a+RXSBGGBqM3C+zM8rFvsQBpiQnYRTtGXWFavIqNmg e8aBKDStCQ5Qlv3MpwhKJkNDG6FvNIzSV60X+TYfgKdptzvbS5FFSXZgQ s1+vQhqsD3u1T85s63Pu552L/wCYe+G9GzAN7lNn5OhQZbXVxxSJm7U3f nosnBZ+zrG1UDh89Xg98aXF0lefY8kfCBhPcANGHwnhOx/SvYUhgZjAge DYFHl4wtBRcnBBma1VsBvNyx2SD/tKLJoF5gI/iFrAU3ENE5l9lsxY3iz A==; X-CSE-ConnectionGUID: Vvd7s2B9SSufXRkiDHuZFg== X-CSE-MsgGUID: i3+P4kVBRGmayrgDJ8orvg== X-IronPort-AV: E=McAfee;i="6800,10657,11735"; a="62726041" X-IronPort-AV: E=Sophos;i="6.23,133,1770624000"; d="scan'208";a="62726041" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Mar 2026 05:42:35 -0700 X-CSE-ConnectionGUID: TzjYJj+rRi+tOz6/Gpz4Nw== X-CSE-MsgGUID: b0jGH0E4RTiNEig+FrSRQg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,133,1770624000"; d="scan'208";a="227663716" Received: from igk-lkp-server01.igk.intel.com (HELO 9958d990ccf2) ([10.211.93.152]) by orviesa003.jf.intel.com with ESMTP; 21 Mar 2026 05:42:33 -0700 Received: from kbuild by 9958d990ccf2 with local (Exim 4.98.2) (envelope-from ) id 1w3vex-0000000067D-2Anz; Sat, 21 Mar 2026 12:42:31 +0000 Date: Sat, 21 Mar 2026 13:41:59 +0100 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com Subject: Re: [PATCH v1] perf inject: Factor build ID inject out into a separate tool Message-ID: <202603211341.4yqxPbic-lkp@intel.com> Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline :::::: :::::: Manual check reason: "low confidence bisect report" :::::: Manual check reason: "likely FALSE maybe-used-uninitialized warning on old compiler" :::::: BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev In-Reply-To: <20260320223520.520454-1-irogers@google.com> References: <20260320223520.520454-1-irogers@google.com> TO: Ian Rogers TO: Peter Zijlstra TO: Ingo Molnar TO: Arnaldo Carvalho de Melo TO: Namhyung Kim TO: Alexander Shishkin TO: Jiri Olsa TO: Ian Rogers TO: Adrian Hunter TO: James Clark TO: linux-kernel@vger.kernel.org TO: linux-perf-users@vger.kernel.org Hi Ian, kernel test robot noticed the following build errors: [auto build test ERROR on perf-tools-next/perf-tools-next] [also build test ERROR on tip/perf/core perf-tools/perf-tools linus/master v7.0-rc4 next-20260320] [cannot apply to acme/perf/core] [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/Ian-Rogers/perf-inject-Factor-build-ID-inject-out-into-a-separate-tool/20260321-191906 base: https://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git perf-tools-next patch link: https://lore.kernel.org/r/20260320223520.520454-1-irogers%40google.com patch subject: [PATCH v1] perf inject: Factor build ID inject out into a separate tool :::::: branch date: 81 minutes ago :::::: commit date: 81 minutes ago config: arm64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260321/202603211341.4yqxPbic-lkp@intel.com/config) compiler: aarch64-linux-gnu-gcc (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260321/202603211341.4yqxPbic-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/r/202603211341.4yqxPbic-lkp@intel.com/ Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All errors (new ones prefixed by >>): Makefile.config:576: No elfutils/debuginfod.h found, no debuginfo server support, please install libdebuginfod-dev/elfutils-debuginfod-client-devel or equivalent Makefile.config:963: No libllvm 13+ found, slower source file resolution, please install llvm-devel/llvm-dev Makefile.config:1159: Rust is not found. Test workloads with rust are disabled. PERF_VERSION = 7.0.rc1.g492296b4d64a builtin-inject.c: In function 'cmd_inject': >> builtin-inject.c:2324:16: error: 'ret' may be used uninitialized [-Werror=maybe-uninitialized] 2324 | return ret; | ^~~ builtin-inject.c:2044:13: note: 'ret' was declared here 2044 | int ret; | ^~~ cc1: all warnings being treated as errors make[3]: *** [tools/build/Makefile.build:93: builtin-inject.o] Error 1 make[3]: *** Waiting for unfinished jobs.... make[2]: *** [Makefile.perf:770: perf-in.o] Error 2 make[1]: *** [Makefile.perf:289: sub-make] Error 2 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki