Re: [PATCH 3/3] mm: check for VMA being detached before destroying it
From: kernel test robot
Date: Wed Jun 21 2023 - 01:55:13 EST
Hi Suren,
kernel test robot noticed the following build errors:
[auto build test ERROR on akpm-mm/mm-everything]
url: https://github.com/intel-lab-lkp/linux/commits/Suren-Baghdasaryan/mm-change-vma_start_read-to-fail-to-lock-a-detached-VMA/20230621-075833
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20230620235726.3873043-3-surenb%40google.com
patch subject: [PATCH 3/3] mm: check for VMA being detached before destroying it
config: sparc-randconfig-r022-20230620 (https://download.01.org/0day-ci/archive/20230621/202306211345.Xt94CVTt-lkp@xxxxxxxxx/config)
compiler: sparc64-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230621/202306211345.Xt94CVTt-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
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306211345.Xt94CVTt-lkp@xxxxxxxxx/
All errors (new ones prefixed by >>):
In file included from include/sound/pcm.h:15,
from sound/drivers/aloop.c:27:
include/linux/mm.h: In function 'vma_init':
include/linux/mm.h:753:12: error: 'struct vm_area_struct' has no member named 'detached'
753 | vma->detached = true;
| ^~
In file included from include/linux/init.h:5,
from sound/drivers/aloop.c:18:
sound/drivers/aloop.c: At top level:
>> include/linux/build_bug.h:16:51: error: bit-field '<anonymous>' width not an integer constant
16 | #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); })))
| ^
include/linux/compiler.h:231:33: note: in expansion of macro 'BUILD_BUG_ON_ZERO'
231 | #define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
| ^~~~~~~~~~~~~~~~~
include/linux/kernel.h:56:59: note: in expansion of macro '__must_be_array'
56 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^~~~~~~~~~~~~~~
include/linux/moduleparam.h:517:20: note: in expansion of macro 'ARRAY_SIZE'
517 | = { .max = ARRAY_SIZE(array), .num = nump, \
| ^~~~~~~~~~
include/linux/moduleparam.h:501:9: note: in expansion of macro 'module_param_array_named'
501 | module_param_array_named(name, name, type, nump, perm)
| ^~~~~~~~~~~~~~~~~~~~~~~~
sound/drivers/aloop.c:46:1: note: in expansion of macro 'module_param_array'
46 | module_param_array(index, int, NULL, 0444);
| ^~~~~~~~~~~~~~~~~~
sound/drivers/aloop.c:39:12: warning: 'index' defined but not used [-Wunused-variable]
39 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
| ^~~~~
--
In file included from include/sound/pcm.h:15,
from sound/drivers/dummy.c:20:
include/linux/mm.h: In function 'vma_init':
include/linux/mm.h:753:12: error: 'struct vm_area_struct' has no member named 'detached'
753 | vma->detached = true;
| ^~
In file included from include/linux/init.h:5,
from sound/drivers/dummy.c:7:
sound/drivers/dummy.c: At top level:
>> include/linux/build_bug.h:16:51: error: bit-field '<anonymous>' width not an integer constant
16 | #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); })))
| ^
include/linux/compiler.h:231:33: note: in expansion of macro 'BUILD_BUG_ON_ZERO'
231 | #define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
| ^~~~~~~~~~~~~~~~~
include/linux/kernel.h:56:59: note: in expansion of macro '__must_be_array'
56 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^~~~~~~~~~~~~~~
include/linux/moduleparam.h:517:20: note: in expansion of macro 'ARRAY_SIZE'
517 | = { .max = ARRAY_SIZE(array), .num = nump, \
| ^~~~~~~~~~
include/linux/moduleparam.h:501:9: note: in expansion of macro 'module_param_array_named'
501 | module_param_array_named(name, name, type, nump, perm)
| ^~~~~~~~~~~~~~~~~~~~~~~~
sound/drivers/dummy.c:62:1: note: in expansion of macro 'module_param_array'
62 | module_param_array(index, int, NULL, 0444);
| ^~~~~~~~~~~~~~~~~~
sound/drivers/dummy.c:48:12: warning: 'index' defined but not used [-Wunused-variable]
48 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
| ^~~~~
vim +16 include/linux/build_bug.h
bc6245e5efd70c Ian Abbott 2017-07-10 6
bc6245e5efd70c Ian Abbott 2017-07-10 7 #ifdef __CHECKER__
bc6245e5efd70c Ian Abbott 2017-07-10 8 #define BUILD_BUG_ON_ZERO(e) (0)
bc6245e5efd70c Ian Abbott 2017-07-10 9 #else /* __CHECKER__ */
bc6245e5efd70c Ian Abbott 2017-07-10 10 /*
bc6245e5efd70c Ian Abbott 2017-07-10 11 * Force a compilation error if condition is true, but also produce a
8788994376d84d Rikard Falkeborn 2019-12-04 12 * result (of value 0 and type int), so the expression can be used
bc6245e5efd70c Ian Abbott 2017-07-10 13 * e.g. in a structure initializer (or where-ever else comma expressions
bc6245e5efd70c Ian Abbott 2017-07-10 14 * aren't permitted).
bc6245e5efd70c Ian Abbott 2017-07-10 15 */
8788994376d84d Rikard Falkeborn 2019-12-04 @16 #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); })))
527edbc18a70e7 Masahiro Yamada 2019-01-03 17 #endif /* __CHECKER__ */
527edbc18a70e7 Masahiro Yamada 2019-01-03 18
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