linux-kernel - Re: drivers/opp/of.c:959:12: warning: stack frame size of 2064 bytes in function '_of_add_table

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Date:   Mon, 1 Mar 2021 10:01:07 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     kernel test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org
Subject: Re: drivers/opp/of.c:959:12: warning: stack frame size of 2064 bytes
 in function '_of_add_table_indexed'

On 28-02-21, 02:11, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   3fb6d0e00efc958d01c2f109c8453033a2d96796
> commit: 406e47652161d4f0d9bc4cd6237b36c51497ec75 opp: Create _of_add_table_indexed() to reduce code duplication
> date:   4 weeks ago
> config: powerpc64-randconfig-r002-20210227 (attached as .config)
> compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 83bc7815c4235786111aa2abf7193292e4a602f5)
> 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
>         # install powerpc64 cross compiling tool for clang build
>         # apt-get install binutils-powerpc64-linux-gnu
>         # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=406e47652161d4f0d9bc4cd6237b36c51497ec75
>         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>         git fetch --no-tags linus master
>         git checkout 406e47652161d4f0d9bc4cd6237b36c51497ec75
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All warnings (new ones prefixed by >>):
> 
> >> drivers/opp/of.c:959:12: warning: stack frame size of 2064 bytes in function '_of_add_table_indexed' [-Wframe-larger-than=]
>    static int _of_add_table_indexed(struct device *dev, int index)
>               ^
>    1 warning generated.
> 
> 
> vim +/_of_add_table_indexed +959 drivers/opp/of.c
> 
>    958	
>  > 959	static int _of_add_table_indexed(struct device *dev, int index)
>    960	{
>    961		struct opp_table *opp_table;
>    962		int ret, count;

Is this a false positive ?

-- 
viresh