linux-kernel - Re: [PATCH v4 3/7] lib/hexdump.c: Optionally suppress lines of repeated bytes

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Date:   Wed, 26 Jun 2019 03:13:22 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Alastair D'Silva <alastair@....ibm.com>
Cc:     kbuild-all@...org, alastair@...ilva.org,
        linux-fbdev@...r.kernel.org,
        Stanislaw Gruszka <sgruszka@...hat.com>,
        Petr Mladek <pmladek@...e.com>,
        David Airlie <airlied@...ux.ie>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        dri-devel@...ts.freedesktop.org, devel@...verdev.osuosl.org,
        linux-scsi@...r.kernel.org, Jassi Brar <jassisinghbrar@...il.com>,
        ath10k@...ts.infradead.org, intel-gfx@...ts.freedesktop.org,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Jose Abreu <Jose.Abreu@...opsys.com>,
        Tom Lendacky <thomas.lendacky@....com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        linux-fsdevel@...r.kernel.org,
        Steven Rostedt <rostedt@...dmis.org>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Benson Leung <bleung@...omium.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        Karsten Keil <isdn@...ux-pingi.de>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        David Laight <David.Laight@...LAB.COM>,
        Daniel Vetter <daniel@...ll.ch>, netdev@...r.kernel.org,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "David S. Miller" <davem@...emloft.net>,
        Alexander Viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCH v4 3/7] lib/hexdump.c: Optionally suppress lines of
 repeated bytes

Hi Alastair,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.2-rc6 next-20190625]
[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/Alastair-D-Silva/Hexdump-Enhancements/20190625-224046
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=xtensa 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   lib/hexdump.c: In function 'announce_skipped':
>> lib/hexdump.c:243:28: warning: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'size_t {aka unsigned int}' [-Wformat=]
     printk("%s%s ** Skipped %lu bytes of value 0x%x **\n",
                             ~~^
                             %u

vim +243 lib/hexdump.c

   236	
   237	static void announce_skipped(const char *level, const char *prefix_str,
   238					   u8 val, size_t count)
   239	{
   240		if (count == 0)
   241			return;
   242	
 > 243		printk("%s%s ** Skipped %lu bytes of value 0x%x **\n",
   244		       level, prefix_str, count, val);
   245	}
   246	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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