[linux-next:master 1796/2407] fs/dax.c:1885:21: sparse: sparse: incorrect type in assignment (different base types)

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   df5d6180169ae06a2eac57e33b077ad6f6252440
commit: 046f7dac066cf5bc28d85f7f753cd272e8332be0 [1796/2407] fs/dax: properly refcount fs dax pages
config: x86_64-randconfig-121-20250210 (https://download.01.org/0day-ci/archive/20250211/202502110703.hGC7ZWMU-lkp@xxxxxxxxx/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250211/202502110703.hGC7ZWMU-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/202502110703.hGC7ZWMU-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
   fs/dax.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, include/trace/events/fs_dax.h):
   include/trace/events/fs_dax.h:10:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:10:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:10:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:10:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:10:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:10:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:10:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:10:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:10:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:10:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:10:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:10:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:10:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:10:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:10:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:10:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:10:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:10:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:10:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:10:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:10:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:10:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:10:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:10:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:10:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:10:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:10:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:10:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:10:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:10:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:10:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:10:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:10:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:10:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:10:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:10:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:10:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:10:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:10:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:153:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:153:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:153:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:153:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:153:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:153:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:153:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:153:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:153:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:153:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:153:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:153:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:153:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:153:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:153:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:153:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:153:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:153:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:153:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:153:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:153:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:153:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:153:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:153:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:153:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:153:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:153:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:153:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:153:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:153:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:153:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:153:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:153:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:153:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:153:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:153:1: sparse:     got restricted vm_fault_t
   include/trace/events/fs_dax.h:153:1: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask @@     got restricted vm_fault_t @@
   include/trace/events/fs_dax.h:153:1: sparse:     expected unsigned long mask
   include/trace/events/fs_dax.h:153:1: sparse:     got restricted vm_fault_t
   fs/dax.c:727:39: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned long v @@     got restricted vm_fault_t @@
   fs/dax.c:727:39: sparse:     expected unsigned long v
   fs/dax.c:727:39: sparse:     got restricted vm_fault_t
   fs/dax.c:729:39: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned long v @@     got restricted vm_fault_t @@
   fs/dax.c:729:39: sparse:     expected unsigned long v
   fs/dax.c:729:39: sparse:     got restricted vm_fault_t
   fs/dax.c:733:31: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned long v @@     got restricted vm_fault_t @@
   fs/dax.c:733:31: sparse:     expected unsigned long v
   fs/dax.c:733:31: sparse:     got restricted vm_fault_t
   fs/dax.c:1376:41: sparse: sparse: incorrect type in argument 3 (different base types) @@     expected int result @@     got restricted vm_fault_t [assigned] [usertype] ret @@
   fs/dax.c:1376:41: sparse:     expected int result
   fs/dax.c:1376:41: sparse:     got restricted vm_fault_t [assigned] [usertype] ret
>> fs/dax.c:1885:21: sparse: sparse: incorrect type in assignment (different base types) @@     expected int ret @@     got restricted vm_fault_t @@
   fs/dax.c:1885:21: sparse:     expected int ret
   fs/dax.c:1885:21: sparse:     got restricted vm_fault_t
   fs/dax.c:1887:21: sparse: sparse: incorrect type in assignment (different base types) @@     expected int ret @@     got restricted vm_fault_t @@
   fs/dax.c:1887:21: sparse:     expected int ret
   fs/dax.c:1887:21: sparse:     got restricted vm_fault_t
>> fs/dax.c:1890:16: sparse: sparse: incorrect type in return expression (different base types) @@     expected restricted vm_fault_t @@     got int ret @@
   fs/dax.c:1890:16: sparse:     expected restricted vm_fault_t
   fs/dax.c:1890:16: sparse:     got int ret
   fs/dax.c:1908:46: sparse: sparse: incorrect type in argument 3 (different base types) @@     expected int result @@     got restricted vm_fault_t [usertype] ret @@
   fs/dax.c:1908:46: sparse:     expected int result
   fs/dax.c:1908:46: sparse:     got restricted vm_fault_t [usertype] ret
   fs/dax.c:1924:21: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted vm_fault_t [assigned] [usertype] ret @@     got unsigned long @@
   fs/dax.c:1924:21: sparse:     expected restricted vm_fault_t [assigned] [usertype] ret
   fs/dax.c:1924:21: sparse:     got unsigned long
   fs/dax.c:1965:51: sparse: sparse: incorrect type in argument 3 (different base types) @@     expected int result @@     got restricted vm_fault_t [assigned] [usertype] ret @@
   fs/dax.c:1965:51: sparse:     expected int result
   fs/dax.c:1965:51: sparse:     got restricted vm_fault_t [assigned] [usertype] ret
   fs/dax.c:2141:55: sparse: sparse: incorrect type in argument 3 (different base types) @@     expected int result @@     got restricted vm_fault_t @@
   fs/dax.c:2141:55: sparse:     expected int result
   fs/dax.c:2141:55: sparse:     got restricted vm_fault_t
   fs/dax.c:2159:58: sparse: sparse: incorrect type in argument 3 (different base types) @@     expected int result @@     got restricted vm_fault_t [assigned] [usertype] ret @@
   fs/dax.c:2159:58: sparse:     expected int result
   fs/dax.c:2159:58: sparse:     got restricted vm_fault_t [assigned] [usertype] ret
   fs/dax.c:279:13: sparse: sparse: context imbalance in 'wait_entry_unlocked' - unexpected unlock
   fs/dax.c:508:49: sparse: sparse: context imbalance in 'dax_lock_folio' - different lock contexts for basic block
   fs/dax.c:575:17: sparse: sparse: context imbalance in 'dax_lock_mapping_entry' - different lock contexts for basic block
   fs/dax.c:1148:9: sparse: sparse: context imbalance in 'dax_writeback_one' - unexpected unlock

vim +1885 fs/dax.c

  1826	
  1827	/**
  1828	 * dax_fault_iter - Common actor to handle pfn insertion in PTE/PMD fault.
  1829	 * @vmf:	vm fault instance
  1830	 * @iter:	iomap iter
  1831	 * @pfnp:	pfn to be returned
  1832	 * @xas:	the dax mapping tree of a file
  1833	 * @entry:	an unlocked dax entry to be inserted
  1834	 * @pmd:	distinguish whether it is a pmd fault
  1835	 */
  1836	static vm_fault_t dax_fault_iter(struct vm_fault *vmf,
  1837			const struct iomap_iter *iter, pfn_t *pfnp,
  1838			struct xa_state *xas, void **entry, bool pmd)
  1839	{
  1840		const struct iomap *iomap = &iter->iomap;
  1841		const struct iomap *srcmap = iomap_iter_srcmap(iter);
  1842		size_t size = pmd ? PMD_SIZE : PAGE_SIZE;
  1843		loff_t pos = (loff_t)xas->xa_index << PAGE_SHIFT;
  1844		bool write = iter->flags & IOMAP_WRITE;
  1845		unsigned long entry_flags = pmd ? DAX_PMD : 0;
  1846		struct folio *folio;
  1847		int ret, err = 0;
  1848		pfn_t pfn;
  1849		void *kaddr;
  1850	
  1851		if (!pmd && vmf->cow_page)
  1852			return dax_fault_cow_page(vmf, iter);
  1853	
  1854		/* if we are reading UNWRITTEN and HOLE, return a hole. */
  1855		if (!write &&
  1856		    (iomap->type == IOMAP_UNWRITTEN || iomap->type == IOMAP_HOLE)) {
  1857			if (!pmd)
  1858				return dax_load_hole(xas, vmf, iter, entry);
  1859			return dax_pmd_load_hole(xas, vmf, iter, entry);
  1860		}
  1861	
  1862		if (iomap->type != IOMAP_MAPPED && !(iomap->flags & IOMAP_F_SHARED)) {
  1863			WARN_ON_ONCE(1);
  1864			return pmd ? VM_FAULT_FALLBACK : VM_FAULT_SIGBUS;
  1865		}
  1866	
  1867		err = dax_iomap_direct_access(iomap, pos, size, &kaddr, &pfn);
  1868		if (err)
  1869			return pmd ? VM_FAULT_FALLBACK : dax_fault_return(err);
  1870	
  1871		*entry = dax_insert_entry(xas, vmf, iter, *entry, pfn, entry_flags);
  1872	
  1873		if (write && iomap->flags & IOMAP_F_SHARED) {
  1874			err = dax_iomap_copy_around(pos, size, size, srcmap, kaddr);
  1875			if (err)
  1876				return dax_fault_return(err);
  1877		}
  1878	
  1879		folio = dax_to_folio(*entry);
  1880		if (dax_fault_is_synchronous(iter, vmf->vma))
  1881			return dax_fault_synchronous_pfnp(pfnp, pfn);
  1882	
  1883		folio_ref_inc(folio);
  1884		if (pmd)
> 1885			ret = vmf_insert_folio_pmd(vmf, pfn_folio(pfn_t_to_pfn(pfn)), write);
  1886		else
  1887			ret = vmf_insert_page_mkwrite(vmf, pfn_t_to_page(pfn), write);
  1888		folio_put(folio);
  1889	
> 1890		return ret;
  1891	}
  1892	

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https://github.com/intel/lkp-tests/wiki




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