[zen:5.15/futex2 4/8] kernel/futex2.c:1089:37: error: storage size of 'tmp' isn't known

[zen:5.15/futex2 4/8] kernel/futex2.c:1089:37: error: storage size of 'tmp' isn't known

[kernel test robot]

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tree:   https://github.com/zen-kernel/zen-kernel 5.15/futex2
head:   17e5d20f03d1d96a2bedb48cc72a61522f05f127
commit: c0a4ecd9072952c0bda39c4d232d59e3d67751ce [4/8] futex2: Implement requeue operation
config: sparc64-randconfig-r016-20211104 (attached as .config)
compiler: sparc64-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://github.com/zen-kernel/zen-kernel/commit/c0a4ecd9072952c0bda39c4d232d59e3d67751ce
        git remote add zen https://github.com/zen-kernel/zen-kernel
        git fetch --no-tags zen 5.15/futex2
        git checkout c0a4ecd9072952c0bda39c4d232d59e3d67751ce
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=sparc64 SHELL=/bin/bash

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

All error/warnings (new ones prefixed by >>):

   kernel/futex2.c:723:44: warning: 'struct compat_futex_waitv' declared inside parameter list will not be visible outside of this definition or declaration
     723 |                                     struct compat_futex_waitv __user *uwaitv,
         |                                            ^~~~~~~~~~~~~~~~~~
   kernel/futex2.c: In function 'compat_futex_parse_waitv':
   kernel/futex2.c:727:35: error: storage size of 'waitv' isn't known
     727 |         struct compat_futex_waitv waitv;
         |                                   ^~~~~
   kernel/futex2.c:731:51: error: invalid use of undefined type 'struct compat_futex_waitv'
     731 |                 if (copy_from_user(&waitv, &uwaitv[i], sizeof(waitv)))
         |                                                   ^
   kernel/futex2.c:740:45: error: implicit declaration of function 'compat_ptr' [-Werror=implicit-function-declaration]
     740 |                 futexv->objects[i].uaddr  = compat_ptr(waitv.uaddr);
         |                                             ^~~~~~~~~~
   kernel/futex2.c:727:35: warning: unused variable 'waitv' [-Wunused-variable]
     727 |         struct compat_futex_waitv waitv;
         |                                   ^~~~~
   kernel/futex2.c: At top level:
   kernel/futex2.c:759:36: error: expected ')' before 'struct'
     759 | COMPAT_SYSCALL_DEFINE4(futex_waitv, struct compat_futex_waitv __user *, waiters,
         |                                    ^~~~~~~
         |                                    )
>> kernel/futex2.c:1086:46: warning: 'struct compat_futex_requeue' declared inside parameter list will not be visible outside of this definition or declaration
    1086 |                                       struct compat_futex_requeue __user *uaddr,
         |                                              ^~~~~~~~~~~~~~~~~~~~
   kernel/futex2.c: In function 'compat_futex_parse_requeue':
>> kernel/futex2.c:1089:37: error: storage size of 'tmp' isn't known
    1089 |         struct compat_futex_requeue tmp;
         |                                     ^~~
   kernel/futex2.c:1089:37: warning: unused variable 'tmp' [-Wunused-variable]
   kernel/futex2.c: At top level:
   kernel/futex2.c:1106:38: error: expected ')' before 'struct'
    1106 | COMPAT_SYSCALL_DEFINE6(futex_requeue, struct compat_futex_requeue __user *, uaddr1,
         |                                      ^~~~~~~
         |                                      )
   kernel/futex2.c:1085:12: warning: 'compat_futex_parse_requeue' defined but not used [-Wunused-function]
    1085 | static int compat_futex_parse_requeue(struct futex_requeue *rq,
         |            ^~~~~~~~~~~~~~~~~~~~~~~~~~
   kernel/futex2.c:722:12: warning: 'compat_futex_parse_waitv' defined but not used [-Wunused-function]
     722 | static int compat_futex_parse_waitv(struct futex_waiter_head *futexv,
         |            ^~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +1089 kernel/futex2.c

  1083	
  1084	#ifdef CONFIG_COMPAT
  1085	static int compat_futex_parse_requeue(struct futex_requeue *rq,
> 1086					      struct compat_futex_requeue __user *uaddr,
  1087					      bool *shared)
  1088	{
> 1089		struct compat_futex_requeue tmp;
  1090	
  1091		if (copy_from_user(&tmp, uaddr, sizeof(tmp)))
  1092			return -EFAULT;
  1093	
  1094		if (tmp.flags & ~FUTEXV_WAITER_MASK ||
  1095		    (tmp.flags & FUTEX_SIZE_MASK) != FUTEX_32)
  1096			return -EINVAL;
  1097	
  1098		*shared = (tmp.flags & FUTEX_SHARED_FLAG) ? true : false;
  1099	
  1100		rq->uaddr = compat_ptr(tmp.uaddr);
  1101		rq->flags = tmp.flags;
  1102	
  1103		return 0;
  1104	}
  1105	

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

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