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Message-ID: <202210131207.P38r0cWg-lkp@intel.com>
Date:   Thu, 13 Oct 2022 21:48:16 +0800
From:   kernel test robot <lkp@...el.com>
To:     Saurabh Sengar <ssengar@...ux.microsoft.com>,
        ssengar@...rosoft.com, kys@...rosoft.com, haiyangz@...rosoft.com,
        sthemmin@...rosoft.com, wei.liu@...nel.org, decui@...rosoft.com,
        longli@...rosoft.com, gregkh@...uxfoundation.org,
        linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org,
        mikelley@...rosoft.com
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org
Subject: Re: [PATCH] uio_hv_generic: Enable support for slower vmbus device
 channels

Hi Saurabh,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on char-misc/char-misc-testing]
[also build test ERROR on linus/master v6.0 next-20221012]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Saurabh-Sengar/uio_hv_generic-Enable-support-for-slower-vmbus-device-channels/20221012-195731
config: i386-randconfig-a015
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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/intel-lab-lkp/linux/commit/e7d62290b320f0f50c4f09b8f869b9049ef2c2bd
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Saurabh-Sengar/uio_hv_generic-Enable-support-for-slower-vmbus-device-channels/20221012-195731
        git checkout e7d62290b320f0f50c4f09b8f869b9049ef2c2bd
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

>> drivers/uio/uio_hv_generic.c:44:1: error: incompatible pointer types returning 'size_t *' (aka 'unsigned int *') from a function with result type 'unsigned long *' [-Werror,-Wincompatible-pointer-types]
   module_param(recv_buf_size, ulong, 0644);
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/moduleparam.h:127:2: note: expanded from macro 'module_param'
           module_param_named(name, name, type, perm)
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/moduleparam.h:150:2: note: expanded from macro 'module_param_named'
           param_check_##type(name, &(value));                                \
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   <scratch space>:40:1: note: expanded from here
   param_check_ulong
   ^
   include/linux/moduleparam.h:446:36: note: expanded from macro 'param_check_ulong'
   #define param_check_ulong(name, p) __param_check(name, p, unsigned long)
                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/moduleparam.h:409:67: note: expanded from macro '__param_check'
           static inline type __always_unused *__check_##name(void) { return(p); }
                                                                            ^~~
   drivers/uio/uio_hv_generic.c:48:1: error: incompatible pointer types returning 'size_t *' (aka 'unsigned int *') from a function with result type 'unsigned long *' [-Werror,-Wincompatible-pointer-types]
   module_param(send_buf_size, ulong, 0644);
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/moduleparam.h:127:2: note: expanded from macro 'module_param'
           module_param_named(name, name, type, perm)
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/moduleparam.h:150:2: note: expanded from macro 'module_param_named'
           param_check_##type(name, &(value));                                \
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   <scratch space>:59:1: note: expanded from here
   param_check_ulong
   ^
   include/linux/moduleparam.h:446:36: note: expanded from macro 'param_check_ulong'
   #define param_check_ulong(name, p) __param_check(name, p, unsigned long)
                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/moduleparam.h:409:67: note: expanded from macro '__param_check'
           static inline type __always_unused *__check_##name(void) { return(p); }
                                                                            ^~~
   drivers/uio/uio_hv_generic.c:52:1: error: incompatible pointer types returning 'size_t *' (aka 'unsigned int *') from a function with result type 'unsigned long *' [-Werror,-Wincompatible-pointer-types]
   module_param(ring_size, ulong, 0644);
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/moduleparam.h:127:2: note: expanded from macro 'module_param'
           module_param_named(name, name, type, perm)
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/moduleparam.h:150:2: note: expanded from macro 'module_param_named'
           param_check_##type(name, &(value));                                \
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   <scratch space>:80:1: note: expanded from here
   param_check_ulong
   ^
   include/linux/moduleparam.h:446:36: note: expanded from macro 'param_check_ulong'
   #define param_check_ulong(name, p) __param_check(name, p, unsigned long)
                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/moduleparam.h:409:67: note: expanded from macro '__param_check'
           static inline type __always_unused *__check_##name(void) { return(p); }
                                                                            ^~~
   drivers/uio/uio_hv_generic.c:256:59: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
           dev_dbg(&dev->device, "primary channel ring size = %lx", ring_size);
                                                              ~~~   ^~~~~~~~~
                                                              %zx
   include/linux/dev_printk.h:163:47: note: expanded from macro 'dev_dbg'
                   dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
                                                       ~~~     ^~~~~~~~~~~
   include/linux/dev_printk.h:129:34: note: expanded from macro 'dev_printk'
                   _dev_printk(level, dev, fmt, ##__VA_ARGS__);            \
                                           ~~~    ^~~~~~~~~~~
   1 warning and 3 errors generated.


vim +44 drivers/uio/uio_hv_generic.c

    42	
    43	static size_t recv_buf_size = RECV_BUFFER_SIZE;
  > 44	module_param(recv_buf_size, ulong, 0644);
    45	MODULE_PARM_DESC(recv_buf_size, "receive buffer size in bytes");
    46	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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