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Message-ID: <202507050529.EoMuEtd8-lkp@intel.com>
Date: Sat, 5 Jul 2025 05:19:34 +0800
From: kernel test robot <lkp@...el.com>
To: lizhe.67@...edance.com, alex.williamson@...hat.com,
akpm@...ux-foundation.org, david@...hat.com, peterx@...hat.com,
jgg@...pe.ca
Cc: oe-kbuild-all@...ts.linux.dev, kvm@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-mm@...ck.org,
lizhe.67@...edance.com
Subject: Re: [PATCH v2 1/5] mm: introduce num_pages_contiguous()
Hi,
kernel test robot noticed the following build errors:
[auto build test ERROR on awilliam-vfio/next]
[also build test ERROR on awilliam-vfio/for-linus akpm-mm/mm-everything linus/master v6.16-rc4 next-20250704]
[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/lizhe-67-bytedance-com/mm-introduce-num_pages_contiguous/20250704-142948
base: https://github.com/awilliam/linux-vfio.git next
patch link: https://lore.kernel.org/r/20250704062602.33500-2-lizhe.67%40bytedance.com
patch subject: [PATCH v2 1/5] mm: introduce num_pages_contiguous()
config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20250705/202507050529.EoMuEtd8-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250705/202507050529.EoMuEtd8-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/202507050529.EoMuEtd8-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/sh/include/asm/page.h:160,
from arch/sh/include/asm/thread_info.h:13,
from include/linux/thread_info.h:60,
from include/asm-generic/preempt.h:5,
from ./arch/sh/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:79,
from include/linux/spinlock.h:56,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:7,
from include/linux/mm.h:7,
from arch/sh/kernel/asm-offsets.c:14:
include/linux/mm.h: In function 'num_pages_contiguous':
>> include/asm-generic/memory_model.h:48:21: error: implicit declaration of function 'page_to_section'; did you mean 'present_section'? [-Wimplicit-function-declaration]
48 | int __sec = page_to_section(__pg); \
| ^~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:53:32: note: in definition of macro '__pfn_to_page'
53 | ({ unsigned long __pfn = (pfn); \
| ^~~
include/asm-generic/memory_model.h:65:21: note: in expansion of macro '__page_to_pfn'
65 | #define page_to_pfn __page_to_pfn
| ^~~~~~~~~~~~~
include/linux/mm.h:200:38: note: in expansion of macro 'page_to_pfn'
200 | #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n))
| ^~~~~~~~~~~
include/linux/mm.h:221:33: note: in expansion of macro 'nth_page'
221 | if (pages[i] != nth_page(first_page, i))
| ^~~~~~~~
include/linux/mm.h: At top level:
>> include/linux/mm.h:2002:29: error: conflicting types for 'page_to_section'; have 'long unsigned int(const struct page *)'
2002 | static inline unsigned long page_to_section(const struct page *page)
| ^~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:48:21: note: previous implicit declaration of 'page_to_section' with type 'int()'
48 | int __sec = page_to_section(__pg); \
| ^~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:53:32: note: in definition of macro '__pfn_to_page'
53 | ({ unsigned long __pfn = (pfn); \
| ^~~
include/asm-generic/memory_model.h:65:21: note: in expansion of macro '__page_to_pfn'
65 | #define page_to_pfn __page_to_pfn
| ^~~~~~~~~~~~~
include/linux/mm.h:200:38: note: in expansion of macro 'page_to_pfn'
200 | #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n))
| ^~~~~~~~~~~
include/linux/mm.h:221:33: note: in expansion of macro 'nth_page'
221 | if (pages[i] != nth_page(first_page, i))
| ^~~~~~~~
make[3]: *** [scripts/Makefile.build:98: arch/sh/kernel/asm-offsets.s] Error 1
make[3]: Target 'prepare' not remade because of errors.
make[2]: *** [Makefile:1274: prepare0] Error 2
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:248: __sub-make] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:248: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +2002 include/linux/mm.h
bf4e8902ee5080 Daniel Kiper 2011-05-24 2001
aa462abe8aaf21 Ian Campbell 2011-08-17 @2002 static inline unsigned long page_to_section(const struct page *page)
d41dee369bff3b Andy Whitcroft 2005-06-23 2003 {
d41dee369bff3b Andy Whitcroft 2005-06-23 2004 return (page->flags >> SECTIONS_PGSHIFT) & SECTIONS_MASK;
d41dee369bff3b Andy Whitcroft 2005-06-23 2005 }
308c05e35e3517 Christoph Lameter 2008-04-28 2006 #endif
d41dee369bff3b Andy Whitcroft 2005-06-23 2007
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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