linux-kernel - drivers/staging/media/hantro/hantro_g2_hevc_dec.c:536:5: warning: stack frame size (1248) exceeds limit (1024) in 'hantro_g2_hevc_dec

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Date:   Tue, 16 Nov 2021 16:04:18 +0800
From:   kernel test robot <lkp@...el.com>
To:     Jisheng Zhang <jszhang@...nel.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org,
        Palmer Dabbelt <palmerdabbelt@...gle.com>
Subject: drivers/staging/media/hantro/hantro_g2_hevc_dec.c:536:5: warning:
 stack frame size (1248) exceeds limit (1024) in 'hantro_g2_hevc_dec_run'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   8ab774587903771821b59471cc723bba6d893942
commit: 8341dcfbd8dda98a3b2836a421016f7d88e35b1c riscv: Enable Undefined Behavior Sanitizer UBSAN
date:   3 months ago
config: riscv-randconfig-r036-20211116 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project fbe72e41b99dc7994daac300d208a955be3e4a0a)
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 riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8341dcfbd8dda98a3b2836a421016f7d88e35b1c
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 8341dcfbd8dda98a3b2836a421016f7d88e35b1c
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=riscv 

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/staging/media/hantro/hantro_g2_hevc_dec.c:536:5: warning: stack frame size (1248) exceeds limit (1024) in 'hantro_g2_hevc_dec_run' [-Wframe-larger-than]
   int hantro_g2_hevc_dec_run(struct hantro_ctx *ctx)
       ^
   1 warning generated.


vim +/hantro_g2_hevc_dec_run +536 drivers/staging/media/hantro/hantro_g2_hevc_dec.c

cb5dd5a0fa518d Benjamin Gaignard 2021-06-03  535  
cb5dd5a0fa518d Benjamin Gaignard 2021-06-03 @536  int hantro_g2_hevc_dec_run(struct hantro_ctx *ctx)

:::::: The code at line 536 was first introduced by commit
:::::: cb5dd5a0fa518dff14ff2b90837c3c8f98f4dd5c media: hantro: Introduce G2/HEVC decoder

:::::: TO: Benjamin Gaignard <benjamin.gaignard@...labora.com>
:::::: CC: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (32443 bytes)