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Message-ID: <202308181520.yCq9Z26w-lkp@intel.com>
Date: Fri, 18 Aug 2023 15:16:04 +0800
From: kernel test robot <lkp@...el.com>
To: Muhammad Usama Anjum <usama.anjum@...labora.com>,
Peter Xu <peterx@...hat.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Michał Mirosław <emmir@...gle.com>,
Andrei Vagin <avagin@...il.com>,
Danylo Mocherniuk <mdanylo@...gle.com>,
Paul Gofman <pgofman@...eweavers.com>
Cc: oe-kbuild-all@...ts.linux.dev,
Linux Memory Management List <linux-mm@...ck.org>,
Alexander Viro <viro@...iv.linux.org.uk>,
Shuah Khan <skhan@...uxfoundation.org>,
Christian Brauner <brauner@...nel.org>,
Yang Shi <shy828301@...il.com>,
Vlastimil Babka <vbabka@...e.cz>,
"Liam R . Howlett" <Liam.Howlett@...cle.com>,
Yun Zhou <yun.zhou@...driver.com>,
Suren Baghdasaryan <surenb@...gle.com>,
Alex Sierra <alex.sierra@....com>,
Muhammad Usama Anjum <usama.anjum@...labora.com>,
Matthew Wilcox <willy@...radead.org>,
Pasha Tatashin <pasha.tatashin@...een.com>,
Axel Rasmussen <axelrasmussen@...gle.com>,
"Gustavo A . R . Silva" <gustavoars@...nel.org>,
Dan Williams <dan.j.williams@...el.com>,
linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-kselftest@...r.kernel.org, Greg KH <greg@...ah.com>,
kernel@...labora.com, Cyrill Gorcunov <gorcunov@...il.com>,
Mike Rapoport <rppt@...nel.org>, Nadav Amit <namit@...are.com>
Subject: Re: [PATCH v32 2/6] fs/proc/task_mmu: Implement IOCTL to get and
optionally clear info about PTEs
Hi Muhammad,
kernel test robot noticed the following build errors:
[auto build test ERROR on akpm-mm/mm-everything]
[also build test ERROR on next-20230817]
[cannot apply to linus/master v6.5-rc6]
[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/Muhammad-Usama-Anjum/userfaultfd-UFFD_FEATURE_WP_ASYNC/20230816-193454
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20230816113049.1697849-3-usama.anjum%40collabora.com
patch subject: [PATCH v32 2/6] fs/proc/task_mmu: Implement IOCTL to get and optionally clear info about PTEs
config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20230818/202308181520.yCq9Z26w-lkp@intel.com/config)
compiler: arceb-elf-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230818/202308181520.yCq9Z26w-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/202308181520.yCq9Z26w-lkp@intel.com/
All errors (new ones prefixed by >>):
fs/proc/task_mmu.c: In function 'pagemap_scan_thp_entry':
>> fs/proc/task_mmu.c:2077:28: error: 'HPAGE_SIZE' undeclared (first use in this function); did you mean 'PAGE_SIZE'?
2077 | if (end != start + HPAGE_SIZE) {
| ^~~~~~~~~~
| PAGE_SIZE
fs/proc/task_mmu.c:2077:28: note: each undeclared identifier is reported only once for each function it appears in
vim +2077 fs/proc/task_mmu.c
2044
2045 static int pagemap_scan_thp_entry(pmd_t *pmd, unsigned long start,
2046 unsigned long end, struct mm_walk *walk)
2047 {
2048 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
2049 struct pagemap_scan_private *p = walk->private;
2050 struct vm_area_struct *vma = walk->vma;
2051 unsigned long categories;
2052 spinlock_t *ptl;
2053 int ret = 0;
2054
2055 ptl = pmd_trans_huge_lock(pmd, vma);
2056 if (!ptl)
2057 return -ENOENT;
2058
2059 categories = p->cur_vma_category | pagemap_thp_category(*pmd);
2060
2061 if (!pagemap_scan_is_interesting_page(categories, p))
2062 goto out_unlock;
2063
2064 ret = pagemap_scan_output(categories, p, start, &end);
2065 if (start == end)
2066 goto out_unlock;
2067
2068 if (~p->arg.flags & PM_SCAN_WP_MATCHING)
2069 goto out_unlock;
2070 if (~categories & PAGE_IS_WRITTEN)
2071 goto out_unlock;
2072
2073 /*
2074 * Break huge page into small pages if the WP operation
2075 * needs to be performed on a portion of the huge page.
2076 */
> 2077 if (end != start + HPAGE_SIZE) {
2078 spin_unlock(ptl);
2079 split_huge_pmd(vma, pmd, start);
2080 pagemap_scan_backout_range(p, start, end);
2081 /* Report as if there was no THP */
2082 return -ENOENT;
2083 }
2084
2085 make_uffd_wp_pmd(vma, start, pmd);
2086 flush_tlb_range(vma, start, end);
2087 out_unlock:
2088 spin_unlock(ptl);
2089 return ret;
2090 #else /* !CONFIG_TRANSPARENT_HUGEPAGE */
2091 return -ENOENT;
2092 #endif
2093 }
2094
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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