linux-kernel - Re: [PATCH 1/1] lz4: Implement lz4 with dynamic offset length.

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Message-ID: <201803230746.yIWYXLwx%fengguang.wu@intel.com>
Date:   Fri, 23 Mar 2018 07:09:49 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Maninder Singh <maninder1.s@...sung.com>
Cc:     kbuild-all@...org, herbert@...dor.apana.org.au,
        davem@...emloft.net, minchan@...nel.org, ngupta@...are.org,
        sergey.senozhatsky.work@...il.com, keescook@...omium.org,
        anton@...msg.org, ccross@...roid.com, tony.luck@...el.com,
        akpm@...ux-foundation.org, colin.king@...onical.com,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        pankaj.m@...sung.com, a.sahrawat@...sung.com, v.narang@...sung.com,
        Maninder Singh <maninder1.s@...sung.com>
Subject: Re: [PATCH 1/1] lz4: Implement lz4 with dynamic offset length.

Hi Maninder,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16-rc6]
[cannot apply to next-20180322]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Maninder-Singh/cover-letter-lz4-Implement-lz4-with-dynamic-offset-length/20180323-064137
config: i386-randconfig-x073-201811 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   fs/pstore/platform.c: In function 'decompress_lz4':
>> fs/pstore/platform.c:357:8: error: too few arguments to function 'LZ4_decompress_safe'
     ret = LZ4_decompress_safe(in, out, inlen, outlen);
           ^~~~~~~~~~~~~~~~~~~
   In file included from fs/pstore/platform.c:38:0:
   include/linux/lz4.h:301:5: note: declared here
    int LZ4_decompress_safe(const char *source, char *dest, int compressedSize,
        ^~~~~~~~~~~~~~~~~~~

vim +/LZ4_decompress_safe +357 fs/pstore/platform.c

8cfc8ddc Geliang Tang 2016-02-18  352  
8cfc8ddc Geliang Tang 2016-02-18  353  static int decompress_lz4(void *in, void *out, size_t inlen, size_t outlen)
8cfc8ddc Geliang Tang 2016-02-18  354  {
8cfc8ddc Geliang Tang 2016-02-18  355  	int ret;
8cfc8ddc Geliang Tang 2016-02-18  356  
d21b5ff1 Sven Schmidt 2017-02-24 @357  	ret = LZ4_decompress_safe(in, out, inlen, outlen);
d21b5ff1 Sven Schmidt 2017-02-24  358  	if (ret < 0) {
d21b5ff1 Sven Schmidt 2017-02-24  359  		/*
d21b5ff1 Sven Schmidt 2017-02-24  360  		 * LZ4_decompress_safe will return an error code
d21b5ff1 Sven Schmidt 2017-02-24  361  		 * (< 0) if decompression failed
d21b5ff1 Sven Schmidt 2017-02-24  362  		 */
d21b5ff1 Sven Schmidt 2017-02-24  363  		pr_err("LZ4_decompress_safe error, ret = %d!\n", ret);
8cfc8ddc Geliang Tang 2016-02-18  364  		return -EIO;
8cfc8ddc Geliang Tang 2016-02-18  365  	}
8cfc8ddc Geliang Tang 2016-02-18  366  
d21b5ff1 Sven Schmidt 2017-02-24  367  	return ret;
8cfc8ddc Geliang Tang 2016-02-18  368  }
8cfc8ddc Geliang Tang 2016-02-18  369  

:::::: The code at line 357 was first introduced by commit
:::::: d21b5ff12df45a65bb220c7e8103a5f0f5609377 fs/pstore: fs/squashfs: change usage of LZ4 to work with new LZ4 version

:::::: TO: Sven Schmidt <4sschmid@...ormatik.uni-hamburg.de>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>

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