[kbuild-all] include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct page, mapping) == offsetof(struct folio, mapping)"

Sunday, 13 February 2022

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b81b1829e7e39f6cebdf6e4d5484eacbceda8554
commit: 536f4217ced62b671bd759f6b549621a5654a70f mm: page->mapping folio->mapping
should have the same offset
date:   2 weeks ago
config: parisc-randconfig-r004-20220213
(https://download.01.org/0day-ci/archive/20220213/202202131932.diaqTbxo-lk...)
compiler: hppa64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
        chmod +x ~/bin/make.cross
        #
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit...
        git remote add linus
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 536f4217ced62b671bd759f6b549621a5654a70f
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir
ARCH=parisc prepare

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com&gt;

All errors (new ones prefixed by >>):

      18 |         if (!(word & (~0ul << 32))) {
         |                            ^~
   include/asm-generic/bitops/__fls.h:20:22: warning: left shift count >= width of type
[-Wshift-count-overflow]
      20 |                 word <<= 32;
         |                      ^~~
   include/asm-generic/bitops/__fls.h:23:28: warning: left shift count >= width of type
[-Wshift-count-overflow]
      23 |         if (!(word & (~0ul << (BITS_PER_LONG-16)))) {
         |                            ^~
   include/asm-generic/bitops/__fls.h:27:28: warning: left shift count >= width of type
[-Wshift-count-overflow]
      27 |         if (!(word & (~0ul << (BITS_PER_LONG-8)))) {
         |                            ^~
   include/asm-generic/bitops/__fls.h:31:28: warning: left shift count >= width of type
[-Wshift-count-overflow]
      31 |         if (!(word & (~0ul << (BITS_PER_LONG-4)))) {
         |                            ^~
   include/asm-generic/bitops/__fls.h:35:28: warning: left shift count >= width of type
[-Wshift-count-overflow]
      35 |         if (!(word & (~0ul << (BITS_PER_LONG-2)))) {
         |                            ^~
   include/asm-generic/bitops/__fls.h:39:28: warning: left shift count >= width of type
[-Wshift-count-overflow]
      39 |         if (!(word & (~0ul << (BITS_PER_LONG-1))))
         |                            ^~
   In file included from arch/parisc/include/asm/bitops.h:201,
                    from include/linux/bitops.h:33,
                    from include/linux/kernel.h:22,
                    from arch/parisc/include/asm/bug.h:5,
                    from include/linux/bug.h:5,
                    from include/linux/thread_info.h:13,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/parisc/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:78,
                    from include/linux/rcupdate.h:27,
                    from include/linux/rculist.h:11,
                    from include/linux/pid.h:5,
                    from include/linux/sched.h:14,
                    from arch/parisc/kernel/asm-offsets.c:18:
   include/asm-generic/bitops/__fls.h: In function '__fls':
   include/asm-generic/bitops/__fls.h:18:28: warning: left shift count >= width of type
[-Wshift-count-overflow]
      18 |         if (!(word & (~0ul << 32))) {
         |                            ^~
   include/asm-generic/bitops/__fls.h:20:22: warning: left shift count >= width of type
[-Wshift-count-overflow]
      20 |                 word <<= 32;
         |                      ^~~
   include/asm-generic/bitops/__fls.h:23:28: warning: left shift count >= width of type
[-Wshift-count-overflow]
      23 |         if (!(word & (~0ul << (BITS_PER_LONG-16)))) {
         |                            ^~
   include/asm-generic/bitops/__fls.h:27:28: warning: left shift count >= width of type
[-Wshift-count-overflow]
      27 |         if (!(word & (~0ul << (BITS_PER_LONG-8)))) {
         |                            ^~
   include/asm-generic/bitops/__fls.h:31:28: warning: left shift count >= width of type
[-Wshift-count-overflow]
      31 |         if (!(word & (~0ul << (BITS_PER_LONG-4)))) {
         |                            ^~
   include/asm-generic/bitops/__fls.h:35:28: warning: left shift count >= width of type
[-Wshift-count-overflow]
      35 |         if (!(word & (~0ul << (BITS_PER_LONG-2)))) {
         |                            ^~
   include/asm-generic/bitops/__fls.h:39:28: warning: left shift count >= width of type
[-Wshift-count-overflow]
      39 |         if (!(word & (~0ul << (BITS_PER_LONG-1))))
         |                            ^~
   In file included from arch/parisc/include/asm/processor.h:18,
                    from arch/parisc/include/asm/thread_info.h:6,
                    from include/linux/thread_info.h:60,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/parisc/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:78,
                    from include/linux/rcupdate.h:27,
                    from include/linux/rculist.h:11,
                    from include/linux/pid.h:5,
                    from include/linux/sched.h:14,
                    from arch/parisc/kernel/asm-offsets.c:18:
   arch/parisc/include/asm/pdc.h: At top level:
   arch/parisc/include/asm/pdc.h:77:24: warning: 'struct pdc_memory_table'
declared inside parameter list will not be visible outside of this definition or
declaration
      77 |                 struct pdc_memory_table *tbl, unsigned long entries);
         |                        ^~~~~~~~~~~~~~~~
   arch/parisc/include/asm/pdc.h:76:30: warning: 'struct pdc_memory_table_raddr'
declared inside parameter list will not be visible outside of this definition or
declaration
      76 | int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr,
         |                              ^~~~~~~~~~~~~~~~~~~~~~
   In file included from include/linux/compiler_types.h:65,
                    from <command-line>:
   include/linux/smp.h:34:33: error: requested alignment '20' is not a positive
power of 2
      34 |         __aligned(sizeof(struct __call_single_data));
         |                                 ^~~~~~~~~~~~~~~~~~
   include/linux/compiler_attributes.h:33:68: note: in definition of macro
'__aligned'
      33 | #define __aligned(x)                    __attribute__((__aligned__(x)))
         |                                                                    ^
   In file included from include/linux/container_of.h:5,
                    from include/linux/list.h:5,
                    from include/linux/rculist.h:10,
                    from include/linux/pid.h:5,
                    from include/linux/sched.h:14,
                    from arch/parisc/kernel/asm-offsets.c:18:
   include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct
page, lru) == offsetof(struct folio, lru)"
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                         ^~~~~~~~~~~~~~
   include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
      77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
         |                                  ^~~~~~~~~~~~~~~
   include/linux/mm_types.h:261:9: note: in expansion of macro 'static_assert'
     261 |         static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
         |         ^~~~~~~~~~~~~
   include/linux/mm_types.h:263:1: note: in expansion of macro 'FOLIO_MATCH'
     263 | FOLIO_MATCH(lru, lru);
         | ^~~~~~~~~~~
...
> include/linux/build_bug.h:78:41: error: static assertion failed:
"offsetof(struct page, mapping) == offsetof(struct folio, mapping)"      
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                         ^~~~~~~~~~~~~~
   include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
      77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
         |                                  ^~~~~~~~~~~~~~~
   include/linux/mm_types.h:261:9: note: in expansion of macro 'static_assert'
     261 |         static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
         |         ^~~~~~~~~~~~~
   include/linux/mm_types.h:264:1: note: in expansion of macro 'FOLIO_MATCH'
     264 | FOLIO_MATCH(mapping, mapping);
         | ^~~~~~~~~~~
   include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct
page, compound_head) == offsetof(struct folio, lru)"
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                         ^~~~~~~~~~~~~~
   include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
      77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
         |                                  ^~~~~~~~~~~~~~~
   include/linux/mm_types.h:261:9: note: in expansion of macro 'static_assert'
     261 |         static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
         |         ^~~~~~~~~~~~~
   include/linux/mm_types.h:265:1: note: in expansion of macro 'FOLIO_MATCH'
     265 | FOLIO_MATCH(compound_head, lru);
         | ^~~~~~~~~~~
   include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct
page, index) == offsetof(struct folio, index)"
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                         ^~~~~~~~~~~~~~
   include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
      77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
         |                                  ^~~~~~~~~~~~~~~
   include/linux/mm_types.h:261:9: note: in expansion of macro 'static_assert'
     261 |         static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
         |         ^~~~~~~~~~~~~
   include/linux/mm_types.h:266:1: note: in expansion of macro 'FOLIO_MATCH'
     266 | FOLIO_MATCH(index, index);
         | ^~~~~~~~~~~
   include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct
page, private) == offsetof(struct folio, private)"
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                         ^~~~~~~~~~~~~~
   include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
      77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
         |                                  ^~~~~~~~~~~~~~~
   include/linux/mm_types.h:261:9: note: in expansion of macro 'static_assert'
     261 |         static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
         |         ^~~~~~~~~~~~~
   include/linux/mm_types.h:267:1: note: in expansion of macro 'FOLIO_MATCH'
     267 | FOLIO_MATCH(private, private);
         | ^~~~~~~~~~~
   include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct
page, _mapcount) == offsetof(struct folio, _mapcount)"
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                         ^~~~~~~~~~~~~~
   include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
      77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
         |                                  ^~~~~~~~~~~~~~~
   include/linux/mm_types.h:261:9: note: in expansion of macro 'static_assert'
     261 |         static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
         |         ^~~~~~~~~~~~~
   include/linux/mm_types.h:268:1: note: in expansion of macro 'FOLIO_MATCH'
     268 | FOLIO_MATCH(_mapcount, _mapcount);
         | ^~~~~~~~~~~
   include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct
page, _refcount) == offsetof(struct folio, _refcount)"
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                         ^~~~~~~~~~~~~~
   include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
      77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
         |                                  ^~~~~~~~~~~~~~~
   include/linux/mm_types.h:261:9: note: in expansion of macro 'static_assert'
     261 |         static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
         |         ^~~~~~~~~~~~~
   include/linux/mm_types.h:269:1: note: in expansion of macro 'FOLIO_MATCH'
     269 | FOLIO_MATCH(_refcount, _refcount);
         | ^~~~~~~~~~~
   include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct
page, memcg_data) == offsetof(struct folio, memcg_data)"
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                         ^~~~~~~~~~~~~~
   include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
      77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
         |                                  ^~~~~~~~~~~~~~~
   include/linux/mm_types.h:261:9: note: in expansion of macro 'static_assert'
     261 |         static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
         |         ^~~~~~~~~~~~~
   include/linux/mm_types.h:271:1: note: in expansion of macro 'FOLIO_MATCH'
     271 | FOLIO_MATCH(memcg_data, memcg_data);
         | ^~~~~~~~~~~
   In file included from include/linux/mm.h:33,
                    from include/linux/pid_namespace.h:7,
                    from include/linux/ptrace.h:10,
                    from arch/parisc/kernel/asm-offsets.c:20:
   include/linux/pgtable.h: In function 'pud_index':
   include/linux/pgtable.h:77:25: warning: right shift count >= width of type
[-Wshift-count-overflow]
      77 |         return (address >> PUD_SHIFT) & (PTRS_PER_PUD - 1);
         |                         ^~
   include/linux/pgtable.h: In function 'pgd_offset_pgd':
   include/linux/pgtable.h:84:29: warning: right shift count >= width of type
[-Wshift-count-overflow]
      84 | #define pgd_index(a)  (((a) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
         |                             ^~
   include/linux/pgtable.h:124:23: note: in expansion of macro 'pgd_index'
     124 |         return (pgd + pgd_index(address));
         |                       ^~~~~~~~~
   In file included from include/linux/stringhash.h:7,
                    from include/linux/dcache.h:15,

vim +78 include/linux/build_bug.h

bc6245e5efd70c Ian Abbott       2017-07-10  60  
6bab69c65013be Rasmus Villemoes 2019-03-07  61  /**
6bab69c65013be Rasmus Villemoes 2019-03-07  62   * static_assert - check integer constant
expression at build time
6bab69c65013be Rasmus Villemoes 2019-03-07  63   *
6bab69c65013be Rasmus Villemoes 2019-03-07  64   * static_assert() is a wrapper for the
C11 _Static_assert, with a
6bab69c65013be Rasmus Villemoes 2019-03-07  65   * little macro magic to make the message
optional (defaulting to the
6bab69c65013be Rasmus Villemoes 2019-03-07  66   * stringification of the tested
expression).
6bab69c65013be Rasmus Villemoes 2019-03-07  67   *
6bab69c65013be Rasmus Villemoes 2019-03-07  68   * Contrary to BUILD_BUG_ON(),
static_assert() can be used at global
6bab69c65013be Rasmus Villemoes 2019-03-07  69   * scope, but requires the expression to
be an integer constant
6bab69c65013be Rasmus Villemoes 2019-03-07  70   * expression (i.e., it is not enough that
__builtin_constant_p() is
6bab69c65013be Rasmus Villemoes 2019-03-07  71   * true for expr).
6bab69c65013be Rasmus Villemoes 2019-03-07  72   *
6bab69c65013be Rasmus Villemoes 2019-03-07  73   * Also note that BUILD_BUG_ON() fails the
build if the condition is
6bab69c65013be Rasmus Villemoes 2019-03-07  74   * true, while static_assert() fails the
build if the expression is
6bab69c65013be Rasmus Villemoes 2019-03-07  75   * false.
6bab69c65013be Rasmus Villemoes 2019-03-07  76   */
6bab69c65013be Rasmus Villemoes 2019-03-07  77  #define static_assert(expr, ...)
__static_assert(expr, ##__VA_ARGS__, #expr)
6bab69c65013be Rasmus Villemoes 2019-03-07 @78  #define __static_assert(expr, msg, ...)
_Static_assert(expr, msg)
6bab69c65013be Rasmus Villemoes 2019-03-07  79  

:::::: The code at line 78 was first introduced by commit
:::::: 6bab69c65013bed5fce9f101a64a84d0385b3946 build_bug.h: add wrapper for
_Static_assert

:::::: TO: Rasmus Villemoes <linux(a)rasmusvillemoes.dk&gt;
:::::: CC: Linus Torvalds <torvalds(a)linux-foundation.org&gt;

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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[kbuild-all] include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct page, mapping) == offsetof(struct folio, mapping)"