linux-kernel - Re: drivers/opp/of.c:959:12: warning: stack frame size of 1056 bytes in function '_of_add_table

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Date:   Tue, 23 Mar 2021 17:39:32 +0800
From:   Rong Chen <rong.a.chen@...el.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>,
        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 1056 bytes
 in function '_of_add_table_indexed'



On 3/23/21 3:25 PM, Viresh Kumar wrote:
> On 23-03-21, 15:23, kernel test robot wrote:
>> Hi Viresh,
>>
>> FYI, the error/warning still remains.
>>
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>> head:   84196390620ac0e5070ae36af84c137c6216a7dc
>> commit: 406e47652161d4f0d9bc4cd6237b36c51497ec75 opp: Create _of_add_table_indexed() to reduce code duplication
>> date:   7 weeks ago
>> config: powerpc64-randconfig-r023-20210323 (attached as .config)
>> compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 14696baaf4c43fe53f738bc292bbe169eed93d5d)
>> 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 1056 bytes in function '_of_add_table_indexed' [-Wframe-larger-than=]
>>     static int _of_add_table_indexed(struct device *dev, int index)
>>                ^
>>     1 warning generated.
> I have reported this on 1st march as well. Looks to be false positive.
>

Hi Viresh,

Thanks for the feedback, we'll stop the bot sending such report again.

Best Regards,
Rong Chen