Re: drivers/opp/of.c:959:12: warning: stack frame size of 2064 bytes in function '_of_add_table_indexed'
From: Viresh Kumar
Date: Sun Feb 28 2021 - 23:35:03 EST
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@xxxxxxxxx>
>
> 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