From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) (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 D74EF2309B2; Thu, 13 Nov 2025 17:41:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763055709; cv=none; b=inum6gJgKRXOtHsu2JdYW4Y+45O1TM98Dzu9PMqwptqj6G8LEP/riakWBX+y4we4IBPGJbQr/fT4pAuvz88yhbtn+5BwksZcoPAd2D1aR8ceEVJGwW3J2bOd1UY1NTMV/2joFfVsPmvoxW31C/gssvCsvrlELHGNCoOcqTwMG+o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763055709; c=relaxed/simple; bh=9u/9wooimg78LZNZgyo2Be9GSJ/iR3xJ38ZAqHeLh+E=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=sAAaW5/WdVQxyndNptC481eF5hLiXM74MfyNfyNt/WnC16Ummo/nsE9cL1w87QXm0lIJBT7NyBltmJCedm8oifobkE9qptdRASJSdoxPG7yrqt2qgi+/2Lx9DcNw/gsid8C8bn1vvGckP0/OqWq1Lv8rAtjMi7oJS1GlTNlHCaE= 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=Z2vw0zV2; arc=none smtp.client-ip=192.198.163.10 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="Z2vw0zV2" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1763055708; x=1794591708; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=9u/9wooimg78LZNZgyo2Be9GSJ/iR3xJ38ZAqHeLh+E=; b=Z2vw0zV2bo+Toe+12vwe9nTk7khj+L36wMvo+QGa0WBPFVijLObGL5ve Fi6NiED+uInccZcxNtEpj96eJ8/W2qn+HKfuUhaf+aiJicrogOaIIL4lm +5pctOZV4cP1cG+QE/7Gy92agl33hwP/0EMxsKHMb3p56oV4ct7SaxUjy w19qYEFL0DssXv8Aca82MQwb2+x6iOtra5qhs2ESbd6hPqRQhIY7z8j3S sSDUPbXLBghhmNl050Rl4MuI4TxNoafbdJmGmJ9IUQyqSWODZGsF3ZK2F 8hj0e3mRc3NAIa+MBqLLHJqmzB+KNFYc8dsnom1Ku864YRcvWcLMpmaF/ g==; X-CSE-ConnectionGUID: sIt4NjY5R3OgCclEv1fLkg== X-CSE-MsgGUID: 2f1PLN7OQDWYNmpNB8F7NQ== X-IronPort-AV: E=McAfee;i="6800,10657,11612"; a="76488335" X-IronPort-AV: E=Sophos;i="6.19,302,1754982000"; d="scan'208";a="76488335" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Nov 2025 09:41:47 -0800 X-CSE-ConnectionGUID: GdtCnl6YSxmYdb/L1VHP6Q== X-CSE-MsgGUID: 2Vd9XJXVRSmzNxAHEaOoMQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,302,1754982000"; d="scan'208";a="193996578" Received: from lkp-server01.sh.intel.com (HELO 7b01c990427b) ([10.239.97.150]) by orviesa004.jf.intel.com with ESMTP; 13 Nov 2025 09:41:44 -0800 Received: from kbuild by 7b01c990427b with local (Exim 4.96) (envelope-from ) id 1vJbKI-0005fl-0d; Thu, 13 Nov 2025 17:41:42 +0000 Date: Fri, 14 Nov 2025 01:41:08 +0800 From: kernel test robot To: Donglin Peng , rostedt@goodmis.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-trace-kernel@vger.kernel.org, linux-kernel@vger.kernel.org, Donglin Peng , Sven Schnelle , Masami Hiramatsu Subject: Re: [PATCH v5] function_graph: Enable funcgraph-args and funcgraph-retaddr to work simultaneously Message-ID: <202511140111.X1AImPQE-lkp@intel.com> References: <20251113072938.333657-1-dolinux.peng@gmail.com> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251113072938.333657-1-dolinux.peng@gmail.com> Hi Donglin, kernel test robot noticed the following build warnings: [auto build test WARNING on v6.18-rc5] [also build test WARNING on linus/master] [cannot apply to trace/for-next next-20251113] [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/Donglin-Peng/function_graph-Enable-funcgraph-args-and-funcgraph-retaddr-to-work-simultaneously/20251113-153332 base: v6.18-rc5 patch link: https://lore.kernel.org/r/20251113072938.333657-1-dolinux.peng%40gmail.com patch subject: [PATCH v5] function_graph: Enable funcgraph-args and funcgraph-retaddr to work simultaneously config: x86_64-kexec (https://download.01.org/0day-ci/archive/20251114/202511140111.X1AImPQE-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/20251114/202511140111.X1AImPQE-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/202511140111.X1AImPQE-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/trace/trace_functions_graph.c:169:20: warning: variable 'retaddr' is uninitialized when used here [-Wuninitialized] 169 | entry->args[0] = retaddr; | ^~~~~~~ kernel/trace/trace_functions_graph.c:143:23: note: initialize the variable 'retaddr' to silence this warning 143 | unsigned long retaddr; | ^ | = 0 1 warning generated. vim +/retaddr +169 kernel/trace/trace_functions_graph.c 132 133 static void 134 print_graph_duration(struct trace_array *tr, unsigned long long duration, 135 struct trace_seq *s, u32 flags); 136 137 static int __graph_entry(struct trace_array *tr, struct ftrace_graph_ent *trace, 138 unsigned int trace_ctx, struct ftrace_regs *fregs) 139 { 140 struct ring_buffer_event *event; 141 struct trace_buffer *buffer = tr->array_buffer.buffer; 142 struct ftrace_graph_ent_entry *entry; 143 unsigned long retaddr; 144 int size = sizeof(*entry); 145 int type = TRACE_GRAPH_ENT; 146 int nr_args = 0, args_offs = 0; 147 148 if (IS_ENABLED(CONFIG_FUNCTION_GRAPH_RETADDR) && 149 tracer_flags_is_set(TRACE_GRAPH_PRINT_RETADDR)) { 150 retaddr = ftrace_graph_top_ret_addr(current); 151 type = TRACE_GRAPH_RETADDR_ENT; 152 nr_args += 1; 153 } 154 155 /* If fregs is defined, add FTRACE_REGS_MAX_ARGS long size words */ 156 if (!!fregs) 157 nr_args += FTRACE_REGS_MAX_ARGS; 158 159 size += nr_args * sizeof(long); 160 event = trace_buffer_lock_reserve(buffer, type, size, trace_ctx); 161 if (!event) 162 return 0; 163 164 entry = ring_buffer_event_data(event); 165 entry->graph_ent = *trace; 166 167 /* Store the retaddr in args[0] */ 168 if (type == TRACE_GRAPH_RETADDR_ENT) { > 169 entry->args[0] = retaddr; 170 args_offs += 1; 171 } 172 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki