linux-kernel - lib/zstd/compress/zstd_opt.c:1324:15: warning: stack frame size (2384) exceeds limit (2048) in 'ZSTD_compressBlock

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Message-ID: <202307232022.GrGHbMYi-lkp@intel.com>
Date:   Sun, 23 Jul 2023 20:30:50 +0800
From:   kernel test robot <lkp@...el.com>
To:     Nick Terrell <terrelln@...com>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: lib/zstd/compress/zstd_opt.c:1324:15: warning: stack frame size
 (2384) exceeds limit (2048) in 'ZSTD_compressBlock_opt0'

Hi Nick,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   c2782531397f5cb19ca3f8f9c17727f1cdf5bee8
commit: 2aa14b1ab2c41a4fe41efae80d58bb77da91f19f zstd: import usptream v1.5.2
date:   9 months ago
config: riscv-randconfig-r032-20230723 (https://download.01.org/0day-ci/archive/20230723/202307232022.GrGHbMYi-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce: (https://download.01.org/0day-ci/archive/20230723/202307232022.GrGHbMYi-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307232022.GrGHbMYi-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> lib/zstd/compress/zstd_opt.c:1324:15: warning: stack frame size (2384) exceeds limit (2048) in 'ZSTD_compressBlock_opt0' [-Wframe-larger-than]
   static size_t ZSTD_compressBlock_opt0(
                 ^
>> lib/zstd/compress/zstd_opt.c:1331:15: warning: stack frame size (2320) exceeds limit (2048) in 'ZSTD_compressBlock_opt2' [-Wframe-larger-than]
   static size_t ZSTD_compressBlock_opt2(
                 ^
   2 warnings generated.


vim +/ZSTD_compressBlock_opt0 +1324 lib/zstd/compress/zstd_opt.c

  1323	
> 1324	static size_t ZSTD_compressBlock_opt0(
  1325	        ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
  1326	        const void* src, size_t srcSize, const ZSTD_dictMode_e dictMode)
  1327	{
  1328	    return ZSTD_compressBlock_opt_generic(ms, seqStore, rep, src, srcSize, 0 /* optLevel */, dictMode);
  1329	}
  1330	
> 1331	static size_t ZSTD_compressBlock_opt2(
  1332	        ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
  1333	        const void* src, size_t srcSize, const ZSTD_dictMode_e dictMode)
  1334	{
  1335	    return ZSTD_compressBlock_opt_generic(ms, seqStore, rep, src, srcSize, 2 /* optLevel */, dictMode);
  1336	}
  1337	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki