include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct page, compound_head) == offsetof(struct folio, lru)"

From: kernel test robot
Date: Sun Feb 13 2022 - 06:00:36 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: b81b1829e7e39f6cebdf6e4d5484eacbceda8554
commit: 7b230db3b8d373219f88a3d25c8fbbf12cc7f233 mm: Introduce struct folio
date: 5 months ago
config: parisc-randconfig-r004-20220213 (https://download.01.org/0day-ci/archive/20220213/202202131828.VxAopBqR-lkp@xxxxxxxxx/config)
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/?id=7b230db3b8d373219f88a3d25c8fbbf12cc7f233
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 7b230db3b8d373219f88a3d25c8fbbf12cc7f233
# 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@xxxxxxxxx>

All errors (new ones prefixed by >>):

In file included from arch/parisc/include/asm/bitops.h:203,
from include/linux/bitops.h:33,
from include/linux/kernel.h:12,
from arch/parisc/include/asm/bug.h:5,
from include/linux/bug.h:5,
from include/linux/page-flags.h:10,
from kernel/bounds.c:10:
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/bitops.h:203,
from include/linux/bitops.h:33,
from include/linux/kernel.h:12,
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/current.h:5,
from ./arch/parisc/include/generated/asm/current.h:1,
from include/linux/sched.h:12,
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:17,
from arch/parisc/include/asm/thread_info.h:8,
from include/linux/thread_info.h:60,
from include/asm-generic/current.h:5,
from ./arch/parisc/include/generated/asm/current.h:1,
from include/linux/sched.h:12,
from arch/parisc/kernel/asm-offsets.c:18:
arch/parisc/include/asm/pdc.h: At top level:
arch/parisc/include/asm/pdc.h:75:24: warning: 'struct pdc_memory_table' declared inside parameter list will not be visible outside of this definition or declaration
75 | struct pdc_memory_table *tbl, unsigned long entries);
| ^~~~~~~~~~~~~~~~
arch/parisc/include/asm/pdc.h:74:30: warning: 'struct pdc_memory_table_raddr' declared inside parameter list will not be visible outside of this definition or declaration
74 | 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/bits.h:22,
from include/linux/bitops.h:6,
from include/linux/kernel.h:12,
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/current.h:5,
from ./arch/parisc/include/generated/asm/current.h:1,
from include/linux/sched.h:12,
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:289:9: note: in expansion of macro 'static_assert'
289 | static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
| ^~~~~~~~~~~~~
include/linux/mm_types.h:291:1: note: in expansion of macro 'FOLIO_MATCH'
291 | FOLIO_MATCH(lru, lru);
| ^~~~~~~~~~~
>> 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:289:9: note: in expansion of macro 'static_assert'
289 | static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
| ^~~~~~~~~~~~~
include/linux/mm_types.h:292:1: note: in expansion of macro 'FOLIO_MATCH'
292 | 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:289:9: note: in expansion of macro 'static_assert'
289 | static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
| ^~~~~~~~~~~~~
include/linux/mm_types.h:293:1: note: in expansion of macro 'FOLIO_MATCH'
293 | 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:289:9: note: in expansion of macro 'static_assert'
289 | static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
| ^~~~~~~~~~~~~
include/linux/mm_types.h:294:1: note: in expansion of macro 'FOLIO_MATCH'
294 | 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:289:9: note: in expansion of macro 'static_assert'
289 | static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
| ^~~~~~~~~~~~~
include/linux/mm_types.h:295:1: note: in expansion of macro 'FOLIO_MATCH'
295 | 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:289:9: note: in expansion of macro 'static_assert'
289 | static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
| ^~~~~~~~~~~~~
include/linux/mm_types.h:296:1: note: in expansion of macro 'FOLIO_MATCH'
296 | 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:289:9: note: in expansion of macro 'static_assert'
289 | static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
| ^~~~~~~~~~~~~
include/linux/mm_types.h:298:1: note: in expansion of macro 'FOLIO_MATCH'
298 | 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,
from include/linux/fs.h:8,
from include/linux/huge_mm.h:8,
from include/linux/mm.h:727,
from include/linux/pid_namespace.h:7,
from include/linux/ptrace.h:10,
from arch/parisc/kernel/asm-offsets.c:20:
include/linux/hash.h: In function 'hash32_ptr':
include/linux/hash.h:99:21: warning: right shift count >= width of type [-Wshift-count-overflow]
99 | val ^= (val >> 32);
| ^~
In file included from arch/parisc/kernel/asm-offsets.c:22:
arch/parisc/kernel/asm-offsets.c: In function 'main':
arch/parisc/kernel/asm-offsets.c:270:43: warning: right shift count >= width of type [-Wshift-count-overflow]
270 | DEFINE(ASM_PGD_ENTRY, PAGE_OFFSET >> PGDIR_SHIFT);
| ^~
include/linux/kbuild.h:6:69: note: in definition of macro 'DEFINE'
6 | asm volatile("\n.ascii \"->" #sym " %0 " #val "\"" : : "i" (val))
| ^~~
make[2]: *** [scripts/Makefile.build:121: arch/parisc/kernel/asm-offsets.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [Makefile:1219: prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:219: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.

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@xxxxxxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

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

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