Re: [PATCH v6 2/2] ptrace,syscall_user_dispatch: add a getter/setter for sud configuration

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

Hi Gregory,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[cannot apply to tip/core/entry]
[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/Gregory-Price/ptrace-syscall_user_dispatch-add-a-getter-setter-for-sud-configuration/20230125-115155
patch link:    https://lore.kernel.org/r/20230125025126.787431-3-gregory.price%40memverge.com
patch subject: [PATCH v6 2/2] ptrace,syscall_user_dispatch: add a getter/setter for sud configuration
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20230125/202301251548.C0OCmAX0-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/581ad4d3309b94aafb967b0ca56607436c18127f
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Gregory-Price/ptrace-syscall_user_dispatch-add-a-getter-setter-for-sud-configuration/20230125-115155
        git checkout 581ad4d3309b94aafb967b0ca56607436c18127f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash kernel/

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

All warnings (new ones prefixed by >>):

   kernel/entry/syscall_user_dispatch.c: In function 'syscall_user_dispatch_set_config':
>> kernel/entry/syscall_user_dispatch.c:143:13: warning: unused variable 'ret' [-Wunused-variable]
     143 |         int ret;
         |             ^~~


vim +/ret +143 kernel/entry/syscall_user_dispatch.c

   138	
   139	int syscall_user_dispatch_set_config(struct task_struct *task, unsigned long size,
   140			void __user *data)
   141	{
   142		struct syscall_user_dispatch_config config;
 > 143		int ret;

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