From: kernel test robot <lkp@intel.com>
To: George Popescu <georgepope@android.com>
Cc: kbuild-all@lists.01.org, clang-built-linux@googlegroups.com,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Linux Memory Management List <linux-mm@kvack.org>,
David Brazdil <dbrazdil@google.com>,
Marco Elver <elver@google.com>
Subject: drivers/media/common/saa7146/saa7146_hlp.c:648:5: warning: stack frame size of 1088 bytes in function 'saa7146_enable_overlay'
Date: Fri, 27 Nov 2020 07:29:56 +0800 [thread overview]
Message-ID: <202011270749.OMX0qbE4-lkp@intel.com> (raw)
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 85a2c56cb4454c73f56d3099d96942e7919b292f
commit: 6a6155f664e31c9be43cd690541a9a682ba3dc22 ubsan: introduce CONFIG_UBSAN_LOCAL_BOUNDS for Clang
date: 6 weeks ago
config: mips-randconfig-r022-20201127 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 175ebad958a0ebaf6c56c20ab30b9d4347742c29)
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 mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6a6155f664e31c9be43cd690541a9a682ba3dc22
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 6a6155f664e31c9be43cd690541a9a682ba3dc22
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/media/common/saa7146/saa7146_hlp.c:648:5: warning: stack frame size of 1088 bytes in function 'saa7146_enable_overlay' [-Wframe-larger-than=]
int saa7146_enable_overlay(struct saa7146_fh *fh)
^
1 warning generated.
vim +/saa7146_enable_overlay +648 drivers/media/common/saa7146/saa7146_hlp.c
^1da177e4c3f415 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 647
^1da177e4c3f415 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 @648 int saa7146_enable_overlay(struct saa7146_fh *fh)
^1da177e4c3f415 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 649 {
^1da177e4c3f415 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 650 struct saa7146_dev *dev = fh->dev;
^1da177e4c3f415 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 651 struct saa7146_vv *vv = dev->vv_data;
^1da177e4c3f415 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 652
5da545ad08a3c6e 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);
5da545ad08a3c6e 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);
^1da177e4c3f415 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 655 saa7146_set_output_format(dev, vv->ov_fmt->trans);
^1da177e4c3f415 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 656 saa7146_set_clipping_rect(fh);
^1da177e4c3f415 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 657
^1da177e4c3f415 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 658 /* enable video dma1 */
^1da177e4c3f415 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 659 saa7146_write(dev, MC1, (MASK_06 | MASK_22));
^1da177e4c3f415 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 660 return 0;
^1da177e4c3f415 drivers/media/common/saa7146_hlp.c Linus Torvalds 2005-04-16 661 }
^1da177e4c3f415 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@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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