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Message-ID: <202409131650.lUO7EoXP-lkp@intel.com>
Date: Fri, 13 Sep 2024 16:51:44 +0800
From: kernel test robot <lkp@...el.com>
To: Oscar Salvador <osalvador@...e.de>,
Andrew Morton <akpm@...ux-foundation.org>
Cc: oe-kbuild-all@...ts.linux.dev,
Linux Memory Management List <linux-mm@...ck.org>,
linux-kernel@...r.kernel.org, Peter Xu <peterx@...hat.com>,
Muchun Song <muchun.song@...ux.dev>,
David Hildenbrand <david@...hat.com>,
Donet Tom <donettom@...ux.ibm.com>,
Vlastimil Babka <vbabka@...e.cz>, Michal Hocko <mhocko@...e.com>,
Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
"Liam R . Howlett" <Liam.Howlett@...cle.com>,
Oscar Salvador <osalvador@...e.de>
Subject: Re: [PATCH v3 9/9] mm: Consolidate common checks in
hugetlb_get_unmapped_area
Hi Oscar,
kernel test robot noticed the following build warnings:
[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on next-20240912]
[cannot apply to s390/features powerpc/next powerpc/fixes deller-parisc/for-next arnd-asm-generic/master linus/master v6.11-rc7]
[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/Oscar-Salvador/mm-mmap-Teach-generic_get_unmapped_area-_topdown-to-handle-hugetlb-mappings/20240910-160312
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20240910080030.1272373-10-osalvador%40suse.de
patch subject: [PATCH v3 9/9] mm: Consolidate common checks in hugetlb_get_unmapped_area
config: loongarch-randconfig-002-20240913 (https://download.01.org/0day-ci/archive/20240913/202409131650.lUO7EoXP-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240913/202409131650.lUO7EoXP-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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409131650.lUO7EoXP-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from include/linux/hugetlb.h:792,
from include/linux/migrate.h:8,
from fs/aio.c:40:
arch/loongarch/include/asm/hugetlb.h: In function 'prepare_hugepage_range':
>> arch/loongarch/include/asm/hugetlb.h:19:24: warning: unused variable 'h' [-Wunused-variable]
19 | struct hstate *h = hstate_file(file);
| ^
vim +/h +19 arch/loongarch/include/asm/hugetlb.h
09cfefb7fa70c3 Huacai Chen 2022-05-31 12
09cfefb7fa70c3 Huacai Chen 2022-05-31 13 #define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
09cfefb7fa70c3 Huacai Chen 2022-05-31 14 static inline int prepare_hugepage_range(struct file *file,
09cfefb7fa70c3 Huacai Chen 2022-05-31 15 unsigned long addr,
09cfefb7fa70c3 Huacai Chen 2022-05-31 16 unsigned long len)
09cfefb7fa70c3 Huacai Chen 2022-05-31 17 {
09cfefb7fa70c3 Huacai Chen 2022-05-31 18 unsigned long task_size = STACK_TOP;
09cfefb7fa70c3 Huacai Chen 2022-05-31 @19 struct hstate *h = hstate_file(file);
09cfefb7fa70c3 Huacai Chen 2022-05-31 20
09cfefb7fa70c3 Huacai Chen 2022-05-31 21 if (len > task_size)
09cfefb7fa70c3 Huacai Chen 2022-05-31 22 return -ENOMEM;
09cfefb7fa70c3 Huacai Chen 2022-05-31 23 if (task_size - len < addr)
09cfefb7fa70c3 Huacai Chen 2022-05-31 24 return -EINVAL;
09cfefb7fa70c3 Huacai Chen 2022-05-31 25 return 0;
09cfefb7fa70c3 Huacai Chen 2022-05-31 26 }
09cfefb7fa70c3 Huacai Chen 2022-05-31 27
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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