* [android-common:android11-5.4 5502/25679] mm/page_alloc.c:2741:29: sparse: sparse: Using plain integer as NULL pointer
@ 2023-05-04 23:54 kernel test robot
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From: kernel test robot @ 2023-05-04 23:54 UTC (permalink / raw)
To: cros-kernel-buildreports; +Cc: oe-kbuild-all
tree: https://android.googlesource.com/kernel/common android11-5.4
head: 0779e2b555622658d357b54d96c427bfd8ba8600
commit: b9d3d8f1e991052edb89b0537b8f2e8b2aa941ac [5502/25679] ANDROID: GKI: cma: redirect page allocation to CMA
config: i386-randconfig-s003 (https://download.01.org/0day-ci/archive/20230505/202305050741.ZBUeGqPs-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.4-39-gce1a6720-dirty
git remote add android-common https://android.googlesource.com/kernel/common
git fetch --no-tags android-common android11-5.4
git checkout b9d3d8f1e991052edb89b0537b8f2e8b2aa941ac
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 olddefconfig
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202305050741.ZBUeGqPs-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
mm/page_alloc.c:106:1: sparse: sparse: symbol 'pcpu_drain_mutex' was not declared. Should it be static?
>> mm/page_alloc.c:2741:29: sparse: sparse: Using plain integer as NULL pointer
mm/page_alloc.c:3252:51: sparse: sparse: incorrect type in argument 7 (different base types) @@ expected int cma @@ got restricted gfp_t @@
mm/page_alloc.c:3252:51: sparse: expected int cma
mm/page_alloc.c:3252:51: sparse: got restricted gfp_t
mm/page_alloc.c: note: in included file (through include/linux/mm.h):
include/linux/gfp.h:325:27: sparse: sparse: restricted gfp_t degrades to integer
include/linux/gfp.h:325:27: sparse: sparse: restricted gfp_t degrades to integer
vim +2741 mm/page_alloc.c
2736
2737 static struct page *__rmqueue_cma(struct zone *zone, unsigned int order,
2738 int migratetype,
2739 unsigned int alloc_flags)
2740 {
> 2741 struct page *page = 0;
2742
2743 retry:
2744 #ifdef CONFIG_CMA
2745 if (migratetype == MIGRATE_MOVABLE && !zone->cma_alloc)
2746 page = __rmqueue_cma_fallback(zone, order);
2747 else
2748 #endif
2749 page = __rmqueue_smallest(zone, order, migratetype);
2750
2751 if (unlikely(!page) && __rmqueue_fallback(zone, order, migratetype,
2752 alloc_flags))
2753 goto retry;
2754
2755 trace_mm_page_alloc_zone_locked(page, order, migratetype);
2756 return page;
2757 }
2758
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
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2023-05-04 23:54 [android-common:android11-5.4 5502/25679] mm/page_alloc.c:2741:29: sparse: sparse: Using plain integer as NULL pointer kernel test robot
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