linux-kernel - Re: [PATCH] memory: brcmstb_dpfe: fix array index out of bounds

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Date:   Fri, 21 Aug 2020 12:42:21 +0800
From:   kernel test robot <lkp@...el.com>
To:     Markus Mayer <markus.mayer@...adcom.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Colin Ian King <colin.king@...onical.com>,
        Krzysztof Kozlowski <krzk@...nel.org>
Cc:     kbuild-all@...ts.01.org, Markus Mayer <markus.mayer@...adcom.com>,
        BCM Kernel Feedback <bcm-kernel-feedback-list@...adcom.com>,
        Linux ARM Kernel <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] memory: brcmstb_dpfe: fix array index out of bounds

Hi Markus,

I love your patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.9-rc1 next-20200820]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Markus-Mayer/memory-brcmstb_dpfe-fix-array-index-out-of-bounds/20200821-090533
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git da2968ff879b9e74688cdc658f646971991d2c56
config: arm-defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
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
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

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 >>):

>> drivers/memory/brcmstb_dpfe.c:305:8: warning: type qualifiers ignored on function return type [-Wignored-qualifiers]
     305 | static const char * const get_error_text(unsigned int i)
         |        ^~~~~

# https://github.com/0day-ci/linux/commit/a2de88715f98369b7e4478457a6455c3e2c72725
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Markus-Mayer/memory-brcmstb_dpfe-fix-array-index-out-of-bounds/20200821-090533
git checkout a2de88715f98369b7e4478457a6455c3e2c72725
vim +305 drivers/memory/brcmstb_dpfe.c

   304	
 > 305	static const char * const get_error_text(unsigned int i)
   306	{
   307		static const char * const error_text[] = {
   308			"Success", "Header code incorrect",
   309			"Unknown command or argument", "Incorrect checksum",
   310			"Malformed command", "Timed out", "Unknown error",
   311		};
   312	
   313		if (unlikely(i >= ARRAY_SIZE(error_text)))
   314			i = ARRAY_SIZE(error_text) - 1;
   315	
   316		return error_text[i];
   317	}
   318	

---
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" (53061 bytes)