linux-kernel - Re: [PATCH 4/4] test_bitmap: add testcases for bitmap

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Message-ID: <201812232014.oUJDQidV%fengguang.wu@intel.com>
Date:   Sun, 23 Dec 2018 20:41:35 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Yuri Norov <ynorov@...vell.com>
Cc:     kbuild-all@...org, Andrew Morton <akpm@...ux-foundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Arnd Bergmann <arnd@...db.de>,
        Kees Cook <keescook@...omium.org>,
        Matthew Wilcox <willy@...radead.org>,
        Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
        Yuri Norov <ynorov@...vell.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/4] test_bitmap: add testcases for bitmap_parselist

Hi Yuri,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.20-rc7 next-20181221]
[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/Yuri-Norov/rework-bitmap_parselist/20181223-175529
config: x86_64-allmodconfig (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=x86_64 

All warnings (new ones prefixed by >>):

>> lib//bitmap.c:519:24: warning: incorrect type in argument 1 (different address spaces)
   lib//bitmap.c:519:24:    expected void const volatile [noderef] <asn:1> *
   lib//bitmap.c:519:24:    got char const *str
   lib//bitmap.c:735:53: warning: incorrect type in argument 2 (different address spaces)
   lib//bitmap.c:735:53:    expected char const *const end
   lib//bitmap.c:735:53:    got char const [noderef] <asn:1> *
   include/linux/slab.h:332:43: warning: dubious: x & !y

vim +519 lib//bitmap.c

87ac23b8 Yuri Norov 2018-12-23  515  
32eb0e6b Yuri Norov 2018-12-23  516  static long get_char(char *c, const char *str, int is_user)
32eb0e6b Yuri Norov 2018-12-23  517  {
32eb0e6b Yuri Norov 2018-12-23  518  	if (unlikely(is_user))
32eb0e6b Yuri Norov 2018-12-23 @519  		return __get_user(*c, str);
32eb0e6b Yuri Norov 2018-12-23  520  
32eb0e6b Yuri Norov 2018-12-23  521  	*c = *str;
32eb0e6b Yuri Norov 2018-12-23  522  	return 0;
32eb0e6b Yuri Norov 2018-12-23  523  }
32eb0e6b Yuri Norov 2018-12-23  524  

:::::: The code at line 519 was first introduced by commit
:::::: 32eb0e6b5e705132d4efef268c65730a2f2b9c41 bitmap_parselist: rework input string parser

:::::: TO: Yuri Norov <ynorov@...vell.com>
:::::: CC: 0day robot <lkp@...el.com>

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