include/linux/compiler_types.h:706:45: error: call to '__compiletime_assert_756' declared with attribute error: BUILD_BUG failed
From: kernel test robot
Date: Sat Jun 13 2026 - 01:22:48 EST
Hi Matthew,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 062871f1371b2e02a272ff5279c6479aff0a37ef
commit: 139ab31aea8a9436460568d556b432bb7e9311f7 drm/pagemap: Correct cpages calculation for migrate_vma_setup
date: 3 months ago
config: arm64-randconfig-001-20260612 (https://download.01.org/0day-ci/archive/20260613/202606131321.k8HAYMJH-lkp@xxxxxxxxx/config)
compiler: aarch64-linux-gcc (GCC) 13.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260613/202606131321.k8HAYMJH-lkp@xxxxxxxxx/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
| Fixes: 139ab31aea8a ("drm/pagemap: Correct cpages calculation for migrate_vma_setup")
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606131321.k8HAYMJH-lkp@xxxxxxxxx/
All errors (new ones prefixed by >>):
In file included from <command-line>:
drivers/gpu/drm/drm_pagemap.c: In function 'drm_pagemap_cpages':
>> include/linux/compiler_types.h:706:45: error: call to '__compiletime_assert_756' declared with attribute error: BUILD_BUG failed
706 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:687:25: note: in definition of macro '__compiletime_assert'
687 | prefix ## suffix(); \
| ^~~~~~
include/linux/compiler_types.h:706:9: note: in expansion of macro '_compiletime_assert'
706 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:59:21: note: in expansion of macro 'BUILD_BUG_ON_MSG'
59 | #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
| ^~~~~~~~~~~~~~~~
include/linux/huge_mm.h:113:28: note: in expansion of macro 'BUILD_BUG'
113 | #define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; })
| ^~~~~~~~~
include/linux/huge_mm.h:117:26: note: in expansion of macro 'HPAGE_PMD_SHIFT'
117 | #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
| ^~~~~~~~~~~~~~~
drivers/gpu/drm/drm_pagemap.c:480:33: note: in expansion of macro 'HPAGE_PMD_ORDER'
480 | order = HPAGE_PMD_ORDER;
| ^~~~~~~~~~~~~~~
--
In file included from <command-line>:
drm_pagemap.c: In function 'drm_pagemap_cpages':
>> include/linux/compiler_types.h:706:45: error: call to '__compiletime_assert_756' declared with attribute error: BUILD_BUG failed
706 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:687:25: note: in definition of macro '__compiletime_assert'
687 | prefix ## suffix(); \
| ^~~~~~
include/linux/compiler_types.h:706:9: note: in expansion of macro '_compiletime_assert'
706 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:59:21: note: in expansion of macro 'BUILD_BUG_ON_MSG'
59 | #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
| ^~~~~~~~~~~~~~~~
include/linux/huge_mm.h:113:28: note: in expansion of macro 'BUILD_BUG'
113 | #define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; })
| ^~~~~~~~~
include/linux/huge_mm.h:117:26: note: in expansion of macro 'HPAGE_PMD_SHIFT'
117 | #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
| ^~~~~~~~~~~~~~~
drm_pagemap.c:480:33: note: in expansion of macro 'HPAGE_PMD_ORDER'
480 | order = HPAGE_PMD_ORDER;
| ^~~~~~~~~~~~~~~
vim +/__compiletime_assert_756 +706 include/linux/compiler_types.h
eb5c2d4b45e3d2d Will Deacon 2020-07-21 692
eb5c2d4b45e3d2d Will Deacon 2020-07-21 693 #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21 694 __compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2d Will Deacon 2020-07-21 695
eb5c2d4b45e3d2d Will Deacon 2020-07-21 696 /**
eb5c2d4b45e3d2d Will Deacon 2020-07-21 697 * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21 698 * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2d Will Deacon 2020-07-21 699 * @msg: a message to emit if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21 700 *
eb5c2d4b45e3d2d Will Deacon 2020-07-21 701 * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21 702 * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21 703 * compiler has support to do so.
eb5c2d4b45e3d2d Will Deacon 2020-07-21 704 */
eb5c2d4b45e3d2d Will Deacon 2020-07-21 705 #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21 @706 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2d Will Deacon 2020-07-21 707
:::::: The code at line 706 was first introduced by commit
:::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h
:::::: TO: Will Deacon <will@xxxxxxxxxx>
:::::: CC: Will Deacon <will@xxxxxxxxxx>
--
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