From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com, Dan Carpenter <error27@gmail.com>
Subject: arch/x86/kernel/crash.c:205 elf_header_exclude_ranges() warn: we never enter this loop
Date: Fri, 19 Dec 2025 04:33:49 +0800 [thread overview]
Message-ID: <202512190414.AOXweMca-lkp@intel.com> (raw)
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Jiri Bohac <jbohac@suse.cz>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Linux Memory Management List <linux-mm@kvack.org>
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 <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| 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
reply other threads:[~2025-12-18 20:34 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202512190414.AOXweMca-lkp@intel.com \
--to=lkp@intel.com \
--cc=error27@gmail.com \
--cc=oe-kbuild@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.