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Subjectarch/arm64/kernel/elfcore.c:62:1: warning: the frame size of 2064 bytes is larger than 2048 bytes
Hi Catalin,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 787af64d05cd528aac9ad16752d11bb1c6061bb9
commit: 6dd8b1a0b6cb3ed93d24110e02e67ff9d006610a arm64: mte: Dump the MTE tags in the core file
date: 6 weeks ago
config: arm64-randconfig-s031-20220331 (https://download.01.org/0day-ci/archive/20220331/202203312129.zEYwA7Ce-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6dd8b1a0b6cb3ed93d24110e02e67ff9d006610a
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 6dd8b1a0b6cb3ed93d24110e02e67ff9d006610a
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kernel/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

arch/arm64/kernel/elfcore.c: In function 'mte_dump_tag_range':
>> arch/arm64/kernel/elfcore.c:62:1: warning: the frame size of 2064 bytes is larger than 2048 bytes [-Wframe-larger-than=]
62 | }
| ^


vim +62 arch/arm64/kernel/elfcore.c

23
24 /* Derived from dump_user_range(); start/end must be page-aligned */
25 static int mte_dump_tag_range(struct coredump_params *cprm,
26 unsigned long start, unsigned long end)
27 {
28 unsigned long addr;
29
30 for (addr = start; addr < end; addr += PAGE_SIZE) {
31 char tags[MTE_PAGE_TAG_STORAGE];
32 struct page *page = get_dump_page(addr);
33
34 /*
35 * get_dump_page() returns NULL when encountering an empty
36 * page table entry that would otherwise have been filled with
37 * the zero page. Skip the equivalent tag dump which would
38 * have been all zeros.
39 */
40 if (!page) {
41 dump_skip(cprm, MTE_PAGE_TAG_STORAGE);
42 continue;
43 }
44
45 /*
46 * Pages mapped in user space as !pte_access_permitted() (e.g.
47 * PROT_EXEC only) may not have the PG_mte_tagged flag set.
48 */
49 if (!test_bit(PG_mte_tagged, &page->flags)) {
50 put_page(page);
51 dump_skip(cprm, MTE_PAGE_TAG_STORAGE);
52 continue;
53 }
54
55 mte_save_page_tags(page_address(page), tags);
56 put_page(page);
57 if (!dump_emit(cprm, tags, MTE_PAGE_TAG_STORAGE))
58 return 0;
59 }
60
61 return 1;
> 62 }
63

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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