Hi all,
After merging the mm tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:
In file included from <command-line>:
mm/rmap.c: In function 'try_to_unmap_one':
include/linux/compiler_types.h:460:45: error: call to '__compiletime_assert_344' declared with attribute error: BUILD_BUG failed
460 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:441:25: note: in definition of macro '__compiletime_assert'
441 | prefix ## suffix(); \
| ^~~~~~
include/linux/compiler_types.h:460:9: note: in expansion of macro '_compiletime_assert'
460 | _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:99:28: note: in expansion of macro 'BUILD_BUG'
99 | #define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; })
| ^~~~~~~~~
include/linux/huge_mm.h:106:35: note: in expansion of macro 'HPAGE_PMD_SHIFT'
106 | #define HPAGE_PMD_SIZE ((1UL) << HPAGE_PMD_SHIFT)
| ^~~~~~~~~~~~~~~
include/linux/huge_mm.h:105:28: note: in expansion of macro 'HPAGE_PMD_SIZE'
105 | #define HPAGE_PMD_MASK (~(HPAGE_PMD_SIZE - 1))
| ^~~~~~~~~~~~~~
mm/rmap.c:1651:41: note: in expansion of macro 'HPAGE_PMD_MASK'
1651 | range.start = address & HPAGE_PMD_MASK;
| ^~~~~~~~~~~~~~
Caused by commit
34d66beb14bd ("mm/rmap: integrate PMD-mapped folio splitting into pagewalk loop")
from the mm-unstable branch of the mm tree.
I have reverted that commit and the following one for today.
--
Cheers,
Stephen Rothwell
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