* [linux-next:master 2241/2462] include/linux/compiler_types.h:542:45: error: call to '__compiletime_assert_413' declared with attribute error: clamp() low limit source_min greater than high limit source_max
@ 2024-12-10 1:06 kernel test robot
2024-12-10 10:26 ` David Laight
0 siblings, 1 reply; 2+ messages in thread
From: kernel test robot @ 2024-12-10 1:06 UTC (permalink / raw)
To: David Laight; +Cc: oe-kbuild-all, Andrew Morton, Linux Memory Management List
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: d1486dca38afd08ca279ae94eb3a397f10737824
commit: 58febb0202b31e9e8d55a603a70f7f131455ef2f [2241/2462] minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp()
config: parisc-allmodconfig (https://download.01.org/0day-ci/archive/20241210/202412100848.HfPEKlvV-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241210/202412100848.HfPEKlvV-lkp@intel.com/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
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202412100848.HfPEKlvV-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from <command-line>:
drivers/gpu/drm/i915/display/intel_backlight.c: In function 'scale':
>> include/linux/compiler_types.h:542:45: error: call to '__compiletime_assert_413' declared with attribute error: clamp() low limit source_min greater than high limit source_max
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:523:25: note: in definition of macro '__compiletime_assert'
523 | prefix ## suffix(); \
| ^~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _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/minmax.h:109:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
109 | BUILD_BUG_ON_MSG(statically_true(ulo > uhi), \
| ^~~~~~~~~~~~~~~~
include/linux/minmax.h:116:9: note: in expansion of macro '__clamp_once'
116 | __clamp_once(val, lo, hi, __UNIQUE_ID(v_), __UNIQUE_ID(l_), __UNIQUE_ID(h_))
| ^~~~~~~~~~~~
include/linux/minmax.h:192:28: note: in expansion of macro '__careful_clamp'
192 | #define clamp(val, lo, hi) __careful_clamp(val, lo, hi)
| ^~~~~~~~~~~~~~~
drivers/gpu/drm/i915/display/intel_backlight.c:47:22: note: in expansion of macro 'clamp'
47 | source_val = clamp(source_val, source_min, source_max);
| ^~~~~
vim +/__compiletime_assert_413 +542 include/linux/compiler_types.h
eb5c2d4b45e3d2 Will Deacon 2020-07-21 528
eb5c2d4b45e3d2 Will Deacon 2020-07-21 529 #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 530 __compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2 Will Deacon 2020-07-21 531
eb5c2d4b45e3d2 Will Deacon 2020-07-21 532 /**
eb5c2d4b45e3d2 Will Deacon 2020-07-21 533 * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21 534 * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2 Will Deacon 2020-07-21 535 * @msg: a message to emit if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21 536 *
eb5c2d4b45e3d2 Will Deacon 2020-07-21 537 * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21 538 * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21 539 * compiler has support to do so.
eb5c2d4b45e3d2 Will Deacon 2020-07-21 540 */
eb5c2d4b45e3d2 Will Deacon 2020-07-21 541 #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 @542 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2 Will Deacon 2020-07-21 543
:::::: The code at line 542 was first introduced by commit
:::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h
:::::: TO: Will Deacon <will@kernel.org>
:::::: CC: Will Deacon <will@kernel.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread* RE: [linux-next:master 2241/2462] include/linux/compiler_types.h:542:45: error: call to '__compiletime_assert_413' declared with attribute error: clamp() low limit source_min greater than high limit source_max
2024-12-10 1:06 [linux-next:master 2241/2462] include/linux/compiler_types.h:542:45: error: call to '__compiletime_assert_413' declared with attribute error: clamp() low limit source_min greater than high limit source_max kernel test robot
@ 2024-12-10 10:26 ` David Laight
0 siblings, 0 replies; 2+ messages in thread
From: David Laight @ 2024-12-10 10:26 UTC (permalink / raw)
To: 'kernel test robot',
Jani Nikula, 'jbarnes@virtuousgeek.org',
Daniel Vetter
Cc: oe-kbuild-all, Andrew Morton, Linux Memory Management List
> drivers/gpu/drm/i915/display/intel_backlight.c: In function 'scale':
I think this has been reported before.
The 'problem' is in drivers/gpu/drm/i915/display/intel_backlight.c
The compiler is inlining functions enough to detect a call to clamp()
with min > max.
The error isn't obvious and even the full compiler output doesn't say where
'scale' is being inlined from so it is hard to see why there is a problem.
I'm not in a position to rerun the failing build.
Probably needs rerunning with the lines commented out one by one to see which
is responsible.
David
> -----Original Message-----
> From: kernel test robot <lkp@intel.com>
> Sent: 10 December 2024 01:07
> To: David Laight <David.Laight@ACULAB.COM>
> Cc: oe-kbuild-all@lists.linux.dev; Andrew Morton <akpm@linux-foundation.org>; Linux Memory Management
> List <linux-mm@kvack.org>
> Subject: [linux-next:master 2241/2462] include/linux/compiler_types.h:542:45: error: call to
> '__compiletime_assert_413' declared with attribute error: clamp() low limit source_min greater than
> high limit source_max
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head: d1486dca38afd08ca279ae94eb3a397f10737824
> commit: 58febb0202b31e9e8d55a603a70f7f131455ef2f [2241/2462] minmax.h: use BUILD_BUG_ON_MSG() for the
> lo < hi test in clamp()
> config: parisc-allmodconfig (https://download.01.org/0day-ci/archive/20241210/202412100848.HfPEKlvV-
> lkp@intel.com/config)
> compiler: hppa-linux-gcc (GCC) 14.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-
> ci/archive/20241210/202412100848.HfPEKlvV-lkp@intel.com/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
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202412100848.HfPEKlvV-lkp@intel.com/
>
> All errors (new ones prefixed by >>):
>
> In file included from <command-line>:
> drivers/gpu/drm/i915/display/intel_backlight.c: In function 'scale':
> >> include/linux/compiler_types.h:542:45: error: call to '__compiletime_assert_413' declared with
> attribute error: clamp() low limit source_min greater than high limit source_max
> 542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
> | ^
> include/linux/compiler_types.h:523:25: note: in definition of macro '__compiletime_assert'
> 523 | prefix ## suffix(); \
> | ^~~~~~
> include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
> 542 | _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/minmax.h:109:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
> 109 | BUILD_BUG_ON_MSG(statically_true(ulo > uhi), \
> | ^~~~~~~~~~~~~~~~
> include/linux/minmax.h:116:9: note: in expansion of macro '__clamp_once'
> 116 | __clamp_once(val, lo, hi, __UNIQUE_ID(v_), __UNIQUE_ID(l_), __UNIQUE_ID(h_))
> | ^~~~~~~~~~~~
> include/linux/minmax.h:192:28: note: in expansion of macro '__careful_clamp'
> 192 | #define clamp(val, lo, hi) __careful_clamp(val, lo, hi)
> | ^~~~~~~~~~~~~~~
> drivers/gpu/drm/i915/display/intel_backlight.c:47:22: note: in expansion of macro 'clamp'
> 47 | source_val = clamp(source_val, source_min, source_max);
> | ^~~~~
>
>
> vim +/__compiletime_assert_413 +542 include/linux/compiler_types.h
>
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 528
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 529 #define _compiletime_assert(condition, msg, prefix,
> suffix) \
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 530 __compiletime_assert(condition, msg, prefix, suffix)
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 531
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 532 /**
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 533 * compiletime_assert - break build and emit msg if
> condition is false
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 534 * @condition: a compile-time constant condition to check
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 535 * @msg: a message to emit if condition is false
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 536 *
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 537 * In tradition of POSIX assert, this macro will break the
> build if the
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 538 * supplied condition is *false*, emitting the supplied
> error message if the
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 539 * compiler has support to do so.
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 540 */
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 541 #define compiletime_assert(condition, msg) \
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 @542 _compiletime_assert(condition, msg,
> __compiletime_assert_, __COUNTER__)
> eb5c2d4b45e3d2 Will Deacon 2020-07-21 543
>
> :::::: The code at line 542 was first introduced by commit
> :::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into
> compiler_types.h
>
> :::::: TO: Will Deacon <will@kernel.org>
> :::::: CC: Will Deacon <will@kernel.org>
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki
-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
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