Re: [PATCH v7 13/17] mm/debug: print vm_refcnt state when dumping the vma

[kernel test robot <lkp@intel.com>]

Hi Suren,

kernel test robot noticed the following build errors:

[auto build test ERROR on 431614f1580a03c1a653340c55ea76bd12a9403f]

url:    https://github.com/intel-lab-lkp/linux/commits/Suren-Baghdasaryan/mm-introduce-vma_start_read_locked-_nested-helpers/20241227-010925
base:   431614f1580a03c1a653340c55ea76bd12a9403f
patch link:    https://lore.kernel.org/r/20241226170710.1159679-14-surenb%40google.com
patch subject: [PATCH v7 13/17] mm/debug: print vm_refcnt state when dumping the vma
config: hexagon-randconfig-002-20241227 (https://download.01.org/0day-ci/archive/20241227/202412270328.HiJX1mRt-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241227/202412270328.HiJX1mRt-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/202412270328.HiJX1mRt-lkp@intel.com/

All errors (new ones prefixed by >>):

>> mm/debug.c:189:54: error: no member named 'vm_refcnt' in 'struct vm_area_struct'
     189 |                 vma->vm_flags, &vma->vm_flags, refcount_read(&vma->vm_refcnt));
         |                                                               ~~~  ^
   include/linux/printk.h:514:35: note: expanded from macro 'pr_emerg'
     514 |         printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
         |                                          ^~~~~~~~~~~
   include/linux/printk.h:501:60: note: expanded from macro 'printk'
     501 | #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
         |                                                            ^~~~~~~~~~~
   include/linux/printk.h:473:19: note: expanded from macro 'printk_index_wrap'
     473 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                                 ^~~~~~~~~~~
   1 error generated.


vim +189 mm/debug.c

   178	
   179	void dump_vma(const struct vm_area_struct *vma)
   180	{
   181		pr_emerg("vma %px start %px end %px mm %px\n"
   182			"prot %lx anon_vma %px vm_ops %px\n"
   183			"pgoff %lx file %px private_data %px\n"
   184			"flags: %#lx(%pGv) refcnt %x\n",
   185			vma, (void *)vma->vm_start, (void *)vma->vm_end, vma->vm_mm,
   186			(unsigned long)pgprot_val(vma->vm_page_prot),
   187			vma->anon_vma, vma->vm_ops, vma->vm_pgoff,
   188			vma->vm_file, vma->vm_private_data,
 > 189			vma->vm_flags, &vma->vm_flags, refcount_read(&vma->vm_refcnt));
   190	}
   191	EXPORT_SYMBOL(dump_vma);
   192	

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