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Message-ID: <202212180736.U43v4n2d-lkp@intel.com>
Date: Sun, 18 Dec 2022 07:31:36 +0800
From: kernel test robot <lkp@...el.com>
To: Hans Verkuil <hverkuil@...all.nl>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
linux-kernel@...r.kernel.org,
Mauro Carvalho Chehab <mchehab@...nel.org>,
linux-media@...r.kernel.org
Subject: drivers/staging/media/deprecated/saa7146/common/saa7146_hlp.c:648:5:
warning: stack frame size (1072) exceeds limit (1024) in
'saa7146_enable_overlay'
Hi Hans,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f9ff5644bcc04221bae56f922122f2b7f5d24d62
commit: e33fdb5a02490059e2f48ced2c038c8a46c6476d media: saa7146: deprecate hexium_gemini/orion, mxb and ttpci
date: 4 months ago
config: powerpc-allyesconfig
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 98b13979fb05f3ed288a900deb843e7b27589e58)
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 powerpc cross compiling tool for clang build
# apt-get install binutils-powerpc-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e33fdb5a02490059e2f48ced2c038c8a46c6476d
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout e33fdb5a02490059e2f48ced2c038c8a46c6476d
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/net/ethernet/mellanox/mlx5/core/steering/ drivers/staging/media/deprecated/saa7146/common/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> drivers/staging/media/deprecated/saa7146/common/saa7146_hlp.c:648:5: warning: stack frame size (1072) exceeds limit (1024) in 'saa7146_enable_overlay' [-Wframe-larger-than]
int saa7146_enable_overlay(struct saa7146_fh *fh)
^
257/1072 (23.97%) spills, 815/1072 (76.03%) variables
1 warning generated.
vim +/saa7146_enable_overlay +648 drivers/staging/media/deprecated/saa7146/common/saa7146_hlp.c
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 647
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 @648 int saa7146_enable_overlay(struct saa7146_fh *fh)
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 649 {
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 650 struct saa7146_dev *dev = fh->dev;
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 651 struct saa7146_vv *vv = dev->vv_data;
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 652
5da545ad08a3c6 drivers/media/common/saa7146_hlp.c Hans Verkuil 2012-05-01 653 saa7146_set_window(dev, vv->ov.win.w.width, vv->ov.win.w.height, vv->ov.win.field);
5da545ad08a3c6 drivers/media/common/saa7146_hlp.c Hans Verkuil 2012-05-01 654 saa7146_set_position(dev, vv->ov.win.w.left, vv->ov.win.w.top, vv->ov.win.w.height, vv->ov.win.field, vv->ov_fmt->pixelformat);
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 655 saa7146_set_output_format(dev, vv->ov_fmt->trans);
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 656 saa7146_set_clipping_rect(fh);
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 657
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 658 /* enable video dma1 */
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 659 saa7146_write(dev, MC1, (MASK_06 | MASK_22));
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 660 return 0;
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 661 }
^1da177e4c3f41 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 662
:::::: The code at line 648 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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