Re: [linux-next:master 7677/9696] mm/kmsan/hooks.c:372:6: error: too many arguments to function call, expected 3, have 4

[Leon Romanovsky <leon@kernel.org>]

On Wed, Sep 17, 2025 at 06:15:12AM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   05af764719214d6568adb55c8749dec295228da8
> commit: 6eb1e769b2c13a33cb2ca694454a7561d3d72c0a [7677/9696] kmsan: convert kmsan_handle_dma to use physical addresses

I think that it is old report.
The commit in the DMA tree has different SHA and correct kmsan_handle_dma() callers:
b420b31f009f ("kmsan: convert kmsan_handle_dma to use physical addresses")

Thanks

> config: x86_64-buildonly-randconfig-002-20250917 (https://download.01.org/0day-ci/archive/20250917/202509170638.AMGNCMEE-lkp@intel.com/config)
> compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250917/202509170638.AMGNCMEE-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/202509170638.AMGNCMEE-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
> >> mm/kmsan/hooks.c:372:6: error: too many arguments to function call, expected 3, have 4
>      371 |                 kmsan_handle_dma(sg_page(item), item->offset, item->length,
>          |                 ~~~~~~~~~~~~~~~~
>      372 |                                  dir);
>          |                                  ^~~
>    mm/kmsan/hooks.c:362:19: note: 'kmsan_handle_dma' declared here
>      362 | EXPORT_SYMBOL_GPL(kmsan_handle_dma);
>          |                   ^~~~~~~~~~~~~~~~
>    include/linux/export.h:90:48: note: expanded from macro 'EXPORT_SYMBOL_GPL'
>       90 | #define EXPORT_SYMBOL_GPL(sym)          _EXPORT_SYMBOL(sym, "GPL")
>          |                                                        ^~~
>    include/linux/export.h:86:54: note: expanded from macro '_EXPORT_SYMBOL'
>       86 | #define _EXPORT_SYMBOL(sym, license)    __EXPORT_SYMBOL(sym, license, "")
>          |                                                         ^~~
>    include/linux/export.h:76:21: note: expanded from macro '__EXPORT_SYMBOL'
>       76 |         extern typeof(sym) sym;                                 \
>          |                            ^~~
>    1 error generated.
> 
> 
> vim +372 mm/kmsan/hooks.c
> 
> 7ade4f10779cb4 Alexander Potapenko 2022-09-15  363  
> 7ade4f10779cb4 Alexander Potapenko 2022-09-15  364  void kmsan_handle_dma_sg(struct scatterlist *sg, int nents,
> 7ade4f10779cb4 Alexander Potapenko 2022-09-15  365  			 enum dma_data_direction dir)
> 7ade4f10779cb4 Alexander Potapenko 2022-09-15  366  {
> 7ade4f10779cb4 Alexander Potapenko 2022-09-15  367  	struct scatterlist *item;
> 7ade4f10779cb4 Alexander Potapenko 2022-09-15  368  	int i;
> 7ade4f10779cb4 Alexander Potapenko 2022-09-15  369  
> 7ade4f10779cb4 Alexander Potapenko 2022-09-15  370  	for_each_sg(sg, item, nents, i)
> 7ade4f10779cb4 Alexander Potapenko 2022-09-15  371  		kmsan_handle_dma(sg_page(item), item->offset, item->length,
> 7ade4f10779cb4 Alexander Potapenko 2022-09-15 @372  				 dir);
> 7ade4f10779cb4 Alexander Potapenko 2022-09-15  373  }
> 7ade4f10779cb4 Alexander Potapenko 2022-09-15  374  
> 
> :::::: The code at line 372 was first introduced by commit
> :::::: 7ade4f10779cb46f5c29ced9b7a41f68501cf0ed dma: kmsan: unpoison DMA mappings
> 
> :::::: TO: Alexander Potapenko <glider@google.com>
> :::::: CC: Andrew Morton <akpm@linux-foundation.org>
> 
> -- 
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki