From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.9]) (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 AE3BC2C08C0 for ; Thu, 18 Dec 2025 20:34:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766090073; cv=none; b=F5XJ/l3dXkf+U9FWza/9zccEnTRmB8zIQoV5J+gjhXnR3NBW+ScUfm4EUlOVzL3tCIpsEOeMH8vhhgoY4ZyAF0ZKB59L4ezowBf5+VEteKGKDm3h2j1VX3v9tP418Svuhtg/zb187zkNWjH6dQYBKBpw7XTd2YziAAMwvZMH6ag= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766090073; c=relaxed/simple; bh=UHHh8ZGqgEcJfIrdbp7YZrFg2wJxsqpxWqnw+dHupYo=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=lZXIqYiKn0PZ/4FE3GuqoJjuAWnkDL/Ibw9eXFsVHffkVWTzMUwGGqB+X6aK79YZ0Aelg/9KnuYNgK5xKIau2Btlt+6K0wbMQ5zO1onStcfTCLjo7VI56zoGK23UcldT0lZWw99N0HZ+7zCP2cR0gjTBq33fdbFzI5RA4GUVoLc= 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=fzrkZ1ij; arc=none smtp.client-ip=192.198.163.9 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="fzrkZ1ij" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1766090071; x=1797626071; h=date:from:to:cc:subject:message-id:mime-version; bh=UHHh8ZGqgEcJfIrdbp7YZrFg2wJxsqpxWqnw+dHupYo=; b=fzrkZ1ij6suVqxpY+NEf9WKZRc/u03o3lwL1Zo/7jSsaDWDqw7DIanpY TYJOtZTDEsM7xMyAAFhn8mlmFw2MTqHdB/2u3ELlcEBw7LxameTYgvu9h JbcAnFc90rH9D7VSPwnrLUo1hvphgJjipdqtzcWr1ycSnlE2hWRxsrIDB J8RuHWukvpe1umgs6Vgd1ejXABMM4u1uhaQ5qkBgfFru054YSq5FBEXOj EJGdwa6pAL6IYici1hZOiH0R2isW5ZfMSqYhRYutgHw1+WmToC2DRFrnD ErvQKz99g9Ou8/sdoAVvWIjNFceWL4A2a5ji3YSCaZ3q/DFJukNwZhnMx w==; X-CSE-ConnectionGUID: pMmZTHunQH2D88XqNpsYMw== X-CSE-MsgGUID: 1hInIsAkSMSebgu170FhJg== X-IronPort-AV: E=McAfee;i="6800,10657,11646"; a="78768807" X-IronPort-AV: E=Sophos;i="6.21,159,1763452800"; d="scan'208";a="78768807" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Dec 2025 12:34:30 -0800 X-CSE-ConnectionGUID: xO7JAFWySUOmWlKH8F2IQQ== X-CSE-MsgGUID: 92epcoOXT4G9LjqG+nPqvQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,159,1763452800"; d="scan'208";a="203085488" Received: from lkp-server01.sh.intel.com (HELO 0d09efa1b85f) ([10.239.97.150]) by fmviesa005.fm.intel.com with ESMTP; 18 Dec 2025 12:34:29 -0800 Received: from kbuild by 0d09efa1b85f with local (Exim 4.98.2) (envelope-from ) id 1vWKhe-000000002cj-330A; Thu, 18 Dec 2025 20:34:26 +0000 Date: Fri, 19 Dec 2025 04:33:49 +0800 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com, Dan Carpenter Subject: arch/x86/kernel/crash.c:205 elf_header_exclude_ranges() warn: we never enter this loop Message-ID: <202512190414.AOXweMca-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 BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev CC: linux-kernel@vger.kernel.org TO: Jiri Bohac CC: Andrew Morton CC: Linux Memory Management List tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: ea1013c1539270e372fc99854bc6e4d94eaeff66 commit: bf8be1c3610829056e5445282ca92ca7b7a4ba7b x86: implement crashkernel cma reservation date: 5 months ago :::::: branch date: 2 days ago :::::: commit date: 5 months ago config: i386-randconfig-141-20251219 (https://download.01.org/0day-ci/archive/20251219/202512190414.AOXweMca-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 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 | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202512190414.AOXweMca-lkp@intel.com/ smatch warnings: arch/x86/kernel/crash.c:205 elf_header_exclude_ranges() warn: we never enter this loop vim +205 arch/x86/kernel/crash.c dd5f726076cc76 Vivek Goyal 2014-08-08 179 dd5f726076cc76 Vivek Goyal 2014-08-08 180 /* dd5f726076cc76 Vivek Goyal 2014-08-08 181 * Look for any unwanted ranges between mstart, mend and remove them. This 8d5f894a3108ac AKASHI Takahiro 2018-04-13 182 * might lead to split and split ranges are put in cmem->ranges[] array dd5f726076cc76 Vivek Goyal 2014-08-08 183 */ 8d5f894a3108ac AKASHI Takahiro 2018-04-13 184 static int elf_header_exclude_ranges(struct crash_mem *cmem) dd5f726076cc76 Vivek Goyal 2014-08-08 185 { dd5f726076cc76 Vivek Goyal 2014-08-08 186 int ret = 0; bf8be1c3610829 Jiri Bohac 2025-06-12 187 int i; dd5f726076cc76 Vivek Goyal 2014-08-08 188 7c321eb2b843bf Lianbo Jiang 2019-11-08 189 /* Exclude the low 1M because it is always reserved */ 61bb219f9d83c1 Yuntao Wang 2024-01-02 190 ret = crash_exclude_mem_range(cmem, 0, SZ_1M - 1); 7c321eb2b843bf Lianbo Jiang 2019-11-08 191 if (ret) 7c321eb2b843bf Lianbo Jiang 2019-11-08 192 return ret; 7c321eb2b843bf Lianbo Jiang 2019-11-08 193 dd5f726076cc76 Vivek Goyal 2014-08-08 194 /* Exclude crashkernel region */ babac4a84a8884 AKASHI Takahiro 2018-04-13 195 ret = crash_exclude_mem_range(cmem, crashk_res.start, crashk_res.end); dd5f726076cc76 Vivek Goyal 2014-08-08 196 if (ret) dd5f726076cc76 Vivek Goyal 2014-08-08 197 return ret; dd5f726076cc76 Vivek Goyal 2014-08-08 198 9eff303725da65 Borislav Petkov 2019-11-14 199 if (crashk_low_res.end) babac4a84a8884 AKASHI Takahiro 2018-04-13 200 ret = crash_exclude_mem_range(cmem, crashk_low_res.start, babac4a84a8884 AKASHI Takahiro 2018-04-13 201 crashk_low_res.end); bf8be1c3610829 Jiri Bohac 2025-06-12 202 if (ret) bf8be1c3610829 Jiri Bohac 2025-06-12 203 return ret; dd5f726076cc76 Vivek Goyal 2014-08-08 204 bf8be1c3610829 Jiri Bohac 2025-06-12 @205 for (i = 0; i < crashk_cma_cnt; ++i) { bf8be1c3610829 Jiri Bohac 2025-06-12 206 ret = crash_exclude_mem_range(cmem, crashk_cma_ranges[i].start, bf8be1c3610829 Jiri Bohac 2025-06-12 207 crashk_cma_ranges[i].end); bf8be1c3610829 Jiri Bohac 2025-06-12 208 if (ret) dd5f726076cc76 Vivek Goyal 2014-08-08 209 return ret; dd5f726076cc76 Vivek Goyal 2014-08-08 210 } dd5f726076cc76 Vivek Goyal 2014-08-08 211 bf8be1c3610829 Jiri Bohac 2025-06-12 212 return 0; bf8be1c3610829 Jiri Bohac 2025-06-12 213 } bf8be1c3610829 Jiri Bohac 2025-06-12 214 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki