[linux-next:master 9208/10007] fs/io_uring.c:7082:42: sparse: sparse: incompatible types in comparison expression (different type sizes):

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

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   19ae1f2bd9c091059f80646604ccef8a1e614f57
commit: 9123c8ffce1610323ec9c0874fa0262353f41fc3 [9208/10007] io_uring: add helpers for 2 level table alloc
config: mips-randconfig-s031-20210615 (attached as .config)
compiler: mips-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-341-g8af24329-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=9123c8ffce1610323ec9c0874fa0262353f41fc3
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 9123c8ffce1610323ec9c0874fa0262353f41fc3
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=mips 

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


sparse warnings: (new ones prefixed by >>)
   command-line: note: in included file:
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
   builtin:0:0: sparse: this was the original definition
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
   builtin:0:0: sparse: this was the original definition
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
   builtin:0:0: sparse: this was the original definition
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
   builtin:0:0: sparse: this was the original definition
   fs/io_uring.c:2921:24: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected void [noderef] __user * @@     got struct io_buffer *[assigned] kbuf @@
   fs/io_uring.c:2921:24: sparse:     expected void [noderef] __user *
   fs/io_uring.c:2921:24: sparse:     got struct io_buffer *[assigned] kbuf
   fs/io_uring.c:4228:14: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct file *file @@     got struct file [noderef] __rcu * @@
   fs/io_uring.c:4228:14: sparse:     expected struct file *file
   fs/io_uring.c:4228:14: sparse:     got struct file [noderef] __rcu *
   fs/io_uring.c:4833:72: sparse: sparse: incorrect type in argument 4 (different base types) @@     expected int mask @@     got restricted __poll_t [usertype] mask @@
   fs/io_uring.c:4833:72: sparse:     expected int mask
   fs/io_uring.c:4833:72: sparse:     got restricted __poll_t [usertype] mask
   fs/io_uring.c:4837:21: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned int [usertype] result @@     got restricted __poll_t [usertype] mask @@
   fs/io_uring.c:4837:21: sparse:     expected unsigned int [usertype] result
   fs/io_uring.c:4837:21: sparse:     got restricted __poll_t [usertype] mask
   fs/io_uring.c:4862:29: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned int [usertype] result @@     got restricted __poll_t @@
   fs/io_uring.c:4862:29: sparse:     expected unsigned int [usertype] result
   fs/io_uring.c:4862:29: sparse:     got restricted __poll_t
   fs/io_uring.c:4946:49: sparse: sparse: incorrect type in argument 2 (different base types) @@     expected restricted __poll_t [usertype] mask @@     got unsigned int [usertype] result @@
   fs/io_uring.c:4946:49: sparse:     expected restricted __poll_t [usertype] mask
   fs/io_uring.c:4946:49: sparse:     got unsigned int [usertype] result
   fs/io_uring.c:5098:41: sparse: sparse: incorrect type in argument 4 (different base types) @@     expected int mask @@     got restricted __poll_t [usertype] @@
   fs/io_uring.c:5098:41: sparse:     expected int mask
   fs/io_uring.c:5098:41: sparse:     got restricted __poll_t [usertype]
   fs/io_uring.c:5186:22: sparse: sparse: invalid assignment: |=
   fs/io_uring.c:5186:22: sparse:    left side has type restricted __poll_t
   fs/io_uring.c:5186:22: sparse:    right side has type int
   fs/io_uring.c:5188:22: sparse: sparse: invalid assignment: |=
   fs/io_uring.c:5188:22: sparse:    left side has type restricted __poll_t
   fs/io_uring.c:5188:22: sparse:    right side has type int
   fs/io_uring.c:5193:22: sparse: sparse: invalid assignment: &=
   fs/io_uring.c:5193:22: sparse:    left side has type restricted __poll_t
   fs/io_uring.c:5193:22: sparse:    right side has type int
   fs/io_uring.c:5195:14: sparse: sparse: invalid assignment: |=
   fs/io_uring.c:5195:14: sparse:    left side has type restricted __poll_t
   fs/io_uring.c:5195:14: sparse:    right side has type int
   fs/io_uring.c:5207:67: sparse: sparse: incorrect type in argument 4 (different base types) @@     expected int mask @@     got restricted __poll_t [assigned] [usertype] mask @@
   fs/io_uring.c:5207:67: sparse:     expected int mask
   fs/io_uring.c:5207:67: sparse:     got restricted __poll_t [assigned] [usertype] mask
   fs/io_uring.c:5208:52: sparse: sparse: incorrect type in argument 5 (different base types) @@     expected int events @@     got restricted __poll_t [usertype] events @@
   fs/io_uring.c:5208:52: sparse:     expected int events
   fs/io_uring.c:5208:52: sparse:     got restricted __poll_t [usertype] events
   fs/io_uring.c:5334:24: sparse: sparse: invalid assignment: |=
   fs/io_uring.c:5334:24: sparse:    left side has type unsigned int
   fs/io_uring.c:5334:24: sparse:    right side has type restricted __poll_t
   fs/io_uring.c:5335:65: sparse: sparse: restricted __poll_t degrades to integer
   fs/io_uring.c:5335:29: sparse: sparse: restricted __poll_t degrades to integer
   fs/io_uring.c:5335:38: sparse: sparse: incorrect type in return expression (different base types) @@     expected restricted __poll_t @@     got unsigned int @@
   fs/io_uring.c:5335:38: sparse:     expected restricted __poll_t
   fs/io_uring.c:5335:38: sparse:     got unsigned int
   fs/io_uring.c:5472:35: sparse: sparse: invalid assignment: &=
   fs/io_uring.c:5472:35: sparse:    left side has type restricted __poll_t
   fs/io_uring.c:5472:35: sparse:    right side has type int
   fs/io_uring.c:5473:54: sparse: sparse: restricted __poll_t degrades to integer
   fs/io_uring.c:5473:35: sparse: sparse: invalid assignment: |=
   fs/io_uring.c:5473:35: sparse:    left side has type restricted __poll_t
   fs/io_uring.c:5473:35: sparse:    right side has type unsigned int
>> fs/io_uring.c:7082:42: sparse: sparse: incompatible types in comparison expression (different type sizes):
>> fs/io_uring.c:7082:42: sparse:    unsigned int *
>> fs/io_uring.c:7082:42: sparse:    unsigned long *
   fs/io_uring.c:7287:9: sparse: sparse: context imbalance in 'io_sq_thread_unpark' - wrong count at exit
   fs/io_uring.c:7298:9: sparse: sparse: context imbalance in 'io_sq_thread_park' - wrong count at exit

vim +7082 fs/io_uring.c

  7070	
  7071	static void **io_alloc_page_table(size_t size)
  7072	{
  7073		unsigned i, nr_tables = DIV_ROUND_UP(size, PAGE_SIZE);
  7074		size_t init_size = size;
  7075		void **table;
  7076	
  7077		table = kcalloc(nr_tables, sizeof(*table), GFP_KERNEL);
  7078		if (!table)
  7079			return NULL;
  7080	
  7081		for (i = 0; i < nr_tables; i++) {
> 7082			unsigned int this_size = min(size, PAGE_SIZE);
  7083	
  7084			table[i] = kzalloc(this_size, GFP_KERNEL);
  7085			if (!table[i]) {
  7086				io_free_page_table(table, init_size);
  7087				return NULL;
  7088			}
  7089			size -= this_size;
  7090		}
  7091		return table;
  7092	}
  7093	

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

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