Re: [PATCH bpf-next v2 3/5] bpf: support bpf_fastcall patterns for kfuncs

[Eduard Zingerman <eddyz87@gmail.com>]

On Sun, 2024-08-18 at 04:09 +0800, kernel test robot wrote:
> Hi Eduard,
> 
> kernel test robot noticed the following build warnings:
> 
> [auto build test WARNING on bpf-next/master]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Eduard-Zingerman/bpf-rename-nocsr-bpf_fastcall-in-verifier/20240817-095340
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
> patch link:    https://lore.kernel.org/r/20240817015140.1039351-4-eddyz87%40gmail.com
> patch subject: [PATCH bpf-next v2 3/5] bpf: support bpf_fastcall patterns for kfuncs
> config: arc-randconfig-002-20240817 (https://download.01.org/0day-ci/archive/20240818/202408180356.YZnBVEv3-lkp@intel.com/config)
> compiler: arceb-elf-gcc (GCC) 13.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240818/202408180356.YZnBVEv3-lkp@intel.com/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
> > Reported-by: kernel test robot <lkp@intel.com>
> > Closes: https://lore.kernel.org/oe-kbuild-all/202408180356.YZnBVEv3-lkp@intel.com/
> 
> All warnings (new ones prefixed by >>):
> 
>    kernel/bpf/verifier.c: In function 'kfunc_fastcall_clobber_mask':
> > > kernel/bpf/verifier.c:16146:33: warning: variable 'params' set but not used [-Wunused-but-set-variable]
>    16146 |         const struct btf_param *params;
>          |                                 ^~~~~~
> 

Missed this warning.
The params variable is not needed indeed.
Will wait for comments before resubmitting.

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