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Date: Sun, 13 Feb 2022 19:51:34 +0800
From: kernel test robot <lkp@...el.com>
To: Wei Yang <richard.weiyang@...il.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
"Matthew Wilcox (Oracle)" <willy@...radead.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Linux Memory Management List <linux-mm@...ck.org>
Subject: include/linux/build_bug.h:78:41: error: static assertion failed:
"offsetof(struct page, mapping) == offsetof(struct folio, mapping)"
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-lkp@intel.com/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=536f4217ced62b671bd759f6b549621a5654a70f
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@...el.com>
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@...musvillemoes.dk>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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