fs/dax.c:1370:41: sparse: sparse: incorrect type in argument 3 (different base types)

From: kernel test robot

Date: Thu Jun 04 2026 - 10:46:54 EST

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ba3e43a9e601636f5edb54e259a74f96ca3b8fd8
commit: d438d273417055241ebaaf1ba3be23459fc27cba mm: remove devmap related functions and page table bits
date: 11 months ago
config: s390-randconfig-r134-20260604 (https://download.01.org/0day-ci/archive/20260604/202606042228.F7YX6xYX-lkp@xxxxxxxxx/config)
compiler: s390-linux-gcc (GCC) 15.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260604/202606042228.F7YX6xYX-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
| Fixes: d438d2734170 ("mm: remove devmap related functions and page table bits")
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606042228.F7YX6xYX-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:105:1: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long mask @@ got restricted vm_fault_t @@
include/trace/events/fs_dax.h:105:1: sparse: expected unsigned long mask
include/trace/events/fs_dax.h:105:1: sparse: got restricted vm_fault_t
include/trace/events/fs_dax.h:105:1: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long mask @@ got restricted vm_fault_t @@
include/trace/events/fs_dax.h:105:1: sparse: expected unsigned long mask
include/trace/events/fs_dax.h:105:1: sparse: got restricted vm_fault_t
include/trace/events/fs_dax.h:105:1: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long mask @@ got restricted vm_fault_t @@
include/trace/events/fs_dax.h:105:1: sparse: expected unsigned long mask
include/trace/events/fs_dax.h:105:1: sparse: got restricted vm_fault_t
include/trace/events/fs_dax.h:105:1: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long mask @@ got restricted vm_fault_t @@
include/trace/events/fs_dax.h:105:1: sparse: expected unsigned long mask
include/trace/events/fs_dax.h:105:1: sparse: got restricted vm_fault_t
include/trace/events/fs_dax.h:105:1: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long mask @@ got restricted vm_fault_t @@
include/trace/events/fs_dax.h:105:1: sparse: expected unsigned long mask
include/trace/events/fs_dax.h:105:1: sparse: got restricted vm_fault_t
include/trace/events/fs_dax.h:105:1: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long mask @@ got restricted vm_fault_t @@
include/trace/events/fs_dax.h:105:1: sparse: expected unsigned long mask
include/trace/events/fs_dax.h:105:1: sparse: got restricted vm_fault_t
include/trace/events/fs_dax.h:105:1: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long mask @@ got restricted vm_fault_t @@
include/trace/events/fs_dax.h:105:1: sparse: expected unsigned long mask
include/trace/events/fs_dax.h:105:1: sparse: got restricted vm_fault_t
include/trace/events/fs_dax.h:105:1: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long mask @@ got restricted vm_fault_t @@
include/trace/events/fs_dax.h:105:1: sparse: expected unsigned long mask
include/trace/events/fs_dax.h:105:1: sparse: got restricted vm_fault_t
include/trace/events/fs_dax.h:105:1: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long mask @@ got restricted vm_fault_t @@
include/trace/events/fs_dax.h:105:1: sparse: expected unsigned long mask
include/trace/events/fs_dax.h:105:1: sparse: got restricted vm_fault_t
include/trace/events/fs_dax.h:105:1: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long mask @@ got restricted vm_fault_t @@
include/trace/events/fs_dax.h:105:1: sparse: expected unsigned long mask
include/trace/events/fs_dax.h:105:1: sparse: got restricted vm_fault_t
include/trace/events/fs_dax.h:105:1: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long mask @@ got restricted vm_fault_t @@
include/trace/events/fs_dax.h:105:1: sparse: expected unsigned long mask
include/trace/events/fs_dax.h:105:1: sparse: got restricted vm_fault_t
include/trace/events/fs_dax.h:105:1: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long mask @@ got restricted vm_fault_t @@
include/trace/events/fs_dax.h:105:1: sparse: expected unsigned long mask
include/trace/events/fs_dax.h:105:1: sparse: got restricted vm_fault_t
include/trace/events/fs_dax.h:105:1: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long mask @@ got restricted vm_fault_t @@
include/trace/events/fs_dax.h:105:1: sparse: expected unsigned long mask
include/trace/events/fs_dax.h:105:1: sparse: got restricted vm_fault_t
fs/dax.c:728:39: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned long v @@ got restricted vm_fault_t @@
fs/dax.c:728:39: sparse: expected unsigned long v
fs/dax.c:728:39: sparse: got restricted vm_fault_t
fs/dax.c:730:39: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned long v @@ got restricted vm_fault_t @@
fs/dax.c:730:39: sparse: expected unsigned long v
fs/dax.c:730:39: sparse: got restricted vm_fault_t
fs/dax.c:734:31: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned long v @@ got restricted vm_fault_t @@
fs/dax.c:734:31: sparse: expected unsigned long v
fs/dax.c:734:31: sparse: got restricted vm_fault_t
>> fs/dax.c:1370:41: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int result @@ got restricted vm_fault_t [assigned] [usertype] ret @@
fs/dax.c:1370:41: sparse: expected int result
fs/dax.c:1370:41: sparse: got restricted vm_fault_t [assigned] [usertype] ret
fs/dax.c:1878:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected int ret @@ got restricted vm_fault_t @@
fs/dax.c:1878:21: sparse: expected int ret
fs/dax.c:1878:21: sparse: got restricted vm_fault_t
fs/dax.c:1881:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected int ret @@ got restricted vm_fault_t @@
fs/dax.c:1881:21: sparse: expected int ret
fs/dax.c:1881:21: sparse: got restricted vm_fault_t
fs/dax.c:1884:16: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted vm_fault_t @@ got int ret @@
fs/dax.c:1884:16: sparse: expected restricted vm_fault_t
fs/dax.c:1884:16: sparse: got int ret
fs/dax.c:1902:46: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int result @@ got restricted vm_fault_t [usertype] ret @@
fs/dax.c:1902:46: sparse: expected int result
fs/dax.c:1902:46: sparse: got restricted vm_fault_t [usertype] ret
fs/dax.c:1918:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted vm_fault_t [assigned] [usertype] ret @@ got unsigned long @@
fs/dax.c:1918:21: sparse: expected restricted vm_fault_t [assigned] [usertype] ret
fs/dax.c:1918:21: sparse: got unsigned long
fs/dax.c:1961:51: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int result @@ got restricted vm_fault_t [assigned] [usertype] ret @@
fs/dax.c:1961:51: sparse: expected int result
fs/dax.c:1961:51: sparse: got restricted vm_fault_t [assigned] [usertype] ret
fs/dax.c:2041:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted vm_fault_t [assigned] [usertype] ret @@ got unsigned long @@
fs/dax.c:2041:21: sparse: expected restricted vm_fault_t [assigned] [usertype] ret
fs/dax.c:2041:21: sparse: got unsigned long
fs/dax.c:2076:62: sparse: sparse: incorrect type in argument 4 (different base types) @@ expected int result @@ got restricted vm_fault_t [assigned] [usertype] ret @@
fs/dax.c:2076:62: sparse: expected int result
fs/dax.c:2076:62: sparse: got restricted vm_fault_t [assigned] [usertype] ret
fs/dax.c:2138:55: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int result @@ got restricted vm_fault_t @@
fs/dax.c:2138:55: sparse: expected int result
fs/dax.c:2138:55: sparse: got restricted vm_fault_t
fs/dax.c:2156:58: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int result @@ got restricted vm_fault_t [assigned] [usertype] ret @@
fs/dax.c:2156:58: sparse: expected int result
fs/dax.c:2156:58: 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:509:49: sparse: sparse: context imbalance in 'dax_lock_folio' - different lock contexts for basic block
fs/dax.c:576:17: sparse: sparse: context imbalance in 'dax_lock_mapping_entry' - different lock contexts for basic block
fs/dax.c:1142:9: sparse: sparse: context imbalance in 'dax_writeback_one' - unexpected unlock

vim +1370 fs/dax.c

ff17b8df224b98 Shiyang Ruan 2022-06-03 1351
e30331ff05f689 Ross Zwisler 2017-09-06 1352 /*
91d25ba8a6b0d8 Ross Zwisler 2017-09-06 1353 * The user has performed a load from a hole in the file. Allocating a new
91d25ba8a6b0d8 Ross Zwisler 2017-09-06 1354 * page in the file would cause excessive storage usage for workloads with
91d25ba8a6b0d8 Ross Zwisler 2017-09-06 1355 * sparse files. Instead we insert a read-only mapping of the 4k zero page.
91d25ba8a6b0d8 Ross Zwisler 2017-09-06 1356 * If this page is ever written to we will re-fault and change the mapping to
91d25ba8a6b0d8 Ross Zwisler 2017-09-06 1357 * point to real DAX storage instead.
e30331ff05f689 Ross Zwisler 2017-09-06 1358 */
e5d6df73302c8d Shiyang Ruan 2022-06-03 1359 static vm_fault_t dax_load_hole(struct xa_state *xas, struct vm_fault *vmf,
e5d6df73302c8d Shiyang Ruan 2022-06-03 1360 const struct iomap_iter *iter, void **entry)
e30331ff05f689 Ross Zwisler 2017-09-06 1361 {
e5d6df73302c8d Shiyang Ruan 2022-06-03 1362 struct inode *inode = iter->inode;
91d25ba8a6b0d8 Ross Zwisler 2017-09-06 1363 unsigned long vaddr = vmf->address;
b90ca5cc32f59b Matthew Wilcox 2018-09-11 1364 pfn_t pfn = pfn_to_pfn_t(my_zero_pfn(vaddr));
b90ca5cc32f59b Matthew Wilcox 2018-09-11 1365 vm_fault_t ret;
e30331ff05f689 Ross Zwisler 2017-09-06 1366
e5d6df73302c8d Shiyang Ruan 2022-06-03 1367 *entry = dax_insert_entry(xas, vmf, iter, *entry, pfn, DAX_ZERO_PAGE);
3159f943aafdba Matthew Wilcox 2017-11-03 1368
38607c62b34b46 Alistair Popple 2025-02-28 1369 ret = vmf_insert_page_mkwrite(vmf, pfn_t_to_page(pfn), false);
e30331ff05f689 Ross Zwisler 2017-09-06 @1370 trace_dax_load_hole(inode, vmf, ret);
e30331ff05f689 Ross Zwisler 2017-09-06 1371 return ret;
e30331ff05f689 Ross Zwisler 2017-09-06 1372 }
e30331ff05f689 Ross Zwisler 2017-09-06 1373

:::::: The code at line 1370 was first introduced by commit
:::::: e30331ff05f689f8f2faeb51664299c4d7841f15 dax: relocate some dax functions

:::::: TO: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

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