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

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Message-ID: <202107222105.fOZEbvak-lkp@intel.com>
Date:   Thu, 22 Jul 2021 21:46:10 +0800
From:   kernel test robot <lkp@...el.com>
To:     Benjamin Gaignard <benjamin.gaignard@...labora.com>
Cc:     clang-built-linux@...glegroups.com, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org,
        Adrian Ratiu <adrian.ratiu@...labora.com>,
        Ezequiel Garcia <ezequiel@...labora.com>,
        Hans Verkuil <hverkuil@...all.nl>
Subject: drivers/staging/media/hantro/hantro_g2_hevc_dec.c:536:5: warning:
 stack frame size (1248) exceeds limit (1024) in function
 'hantro_g2_hevc_dec_run'

Hi Benjamin,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   3d5895cd351757f69c9a66fb5fc8cf19f454d773
commit: cb5dd5a0fa518dff14ff2b90837c3c8f98f4dd5c media: hantro: Introduce G2/HEVC decoder
date:   6 weeks ago
config: powerpc64-randconfig-r013-20210722 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 9625ca5b602616b2f5584e8a49ba93c52c141e40)
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=cb5dd5a0fa518dff14ff2b90837c3c8f98f4dd5c
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout cb5dd5a0fa518dff14ff2b90837c3c8f98f4dd5c
        # 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 >>):

   In file included from drivers/staging/media/hantro/hantro_g2_hevc_dec.c:8:
   In file included from drivers/staging/media/hantro/hantro_hw.h:12:
   In file included from include/linux/interrupt.h:6:
   In file included from include/linux/kernel.h:12:
   In file included from include/linux/bitops.h:32:
   In file included from arch/powerpc/include/asm/bitops.h:62:
   arch/powerpc/include/asm/barrier.h:49:9: warning: '__lwsync' macro redefined [-Wmacro-redefined]
   #define __lwsync()      __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory")
           ^
   <built-in>:310:9: note: previous definition is here
   #define __lwsync __builtin_ppc_lwsync
           ^
>> drivers/staging/media/hantro/hantro_g2_hevc_dec.c:536:5: warning: stack frame size (1248) exceeds limit (1024) in function 'hantro_g2_hevc_dec_run' [-Wframe-larger-than]
   int hantro_g2_hevc_dec_run(struct hantro_ctx *ctx)
       ^
   2 warnings generated.


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

   535	
 > 536	int hantro_g2_hevc_dec_run(struct hantro_ctx *ctx)

---
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" (42962 bytes)