[sashal-stable:pending-5.4 226/320] arch/s390/mm/gmap.c:687:21: warning: assignment to 'struct vm_area_struct *' from 'int' makes pointer from integer without a cast

[sashal-stable:pending-5.4 226/320] arch/s390/mm/gmap.c:687:21: warning: assignment to 'struct vm_area_struct *' from 'int' makes pointer from integer without a cast

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git pending-5.4
head:   1f9e7a61c29e139420352f203f2aa2bad3bac189
commit: 25b543df1007266478f6e995ad92f1a5c51d8525 [226/320] s390/gmap: validate VMA in __gmap_zap()
config: s390-buildonly-randconfig-r002-20211114 (attached as .config)
compiler: s390-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/commit/?id=25b543df1007266478f6e995ad92f1a5c51d8525
        git remote add sashal-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git
        git fetch --no-tags sashal-stable pending-5.4
        git checkout 25b543df1007266478f6e995ad92f1a5c51d8525
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=s390 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   arch/s390/mm/gmap.c: In function '__gmap_zap':
   arch/s390/mm/gmap.c:687:23: error: implicit declaration of function 'vma_lookup'; did you mean 'key_lookup'? [-Werror=implicit-function-declaration]
     687 |                 vma = vma_lookup(gmap->mm, vmaddr);
         |                       ^~~~~~~~~~
         |                       key_lookup
>> arch/s390/mm/gmap.c:687:21: warning: assignment to 'struct vm_area_struct *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     687 |                 vma = vma_lookup(gmap->mm, vmaddr);
         |                     ^
   cc1: some warnings being treated as errors


vim +687 arch/s390/mm/gmap.c

   670	
   671	/*
   672	 * this function is assumed to be called with mmap_sem held
   673	 */
   674	void __gmap_zap(struct gmap *gmap, unsigned long gaddr)
   675	{
   676		struct vm_area_struct *vma;
   677		unsigned long vmaddr;
   678		spinlock_t *ptl;
   679		pte_t *ptep;
   680	
   681		/* Find the vm address for the guest address */
   682		vmaddr = (unsigned long) radix_tree_lookup(&gmap->guest_to_host,
   683							   gaddr >> PMD_SHIFT);
   684		if (vmaddr) {
   685			vmaddr |= gaddr & ~PMD_MASK;
   686	
 > 687			vma = vma_lookup(gmap->mm, vmaddr);
   688			if (!vma || is_vm_hugetlb_page(vma))
   689				return;
   690	
   691			/* Get pointer to the page table entry */
   692			ptep = get_locked_pte(gmap->mm, vmaddr, &ptl);
   693			if (likely(ptep))
   694				ptep_zap_unused(gmap->mm, vmaddr, ptep, 0);
   695			pte_unmap_unlock(ptep, ptl);
   696		}
   697	}
   698	EXPORT_SYMBOL_GPL(__gmap_zap);
   699	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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