tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git pending-4.9
head:   21e2c9d65956fc7ddbcda40e4a99f74cf2346d50
commit: 8336fcda5993b96c3088b25f3d4a0310a9e9400b [16/20] arcnet: fix potential memory leak in com20020_probe()
config: mips-allyesconfig
compiler: mips-linux-gcc (GCC) 7.5.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/commit/?id=8336fcda5993b96c3088b25f3d4a0310a9e9400b
        git remote add sashal-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git
        git fetch --no-tags sashal-stable pending-4.9
        git checkout 8336fcda5993b96c3088b25f3d4a0310a9e9400b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-7.5.0 make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash arch/mips/kernel/ arch/mips/mm/ drivers/net/arcnet/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/net/arcnet/com20020_cs.c: In function 'com20020_probe':
>> drivers/net/arcnet/com20020_cs.c:153:2: error: implicit declaration of function 'free_arcdev'; did you mean 'free_netdev'? [-Werror=implicit-function-declaration]
     free_arcdev(dev);
     ^~~~~~~~~~~
     free_netdev
   cc1: some warnings being treated as errors


vim +153 drivers/net/arcnet/com20020_cs.c

   110	
   111	static int com20020_probe(struct pcmcia_device *p_dev)
   112	{
   113		struct com20020_dev *info;
   114		struct net_device *dev;
   115		struct arcnet_local *lp;
   116		int ret = -ENOMEM;
   117	
   118		dev_dbg(&p_dev->dev, "com20020_attach()\n");
   119	
   120		/* Create new network device */
   121		info = kzalloc(sizeof(*info), GFP_KERNEL);
   122		if (!info)
   123			goto fail_alloc_info;
   124	
   125		dev = alloc_arcdev("");
   126		if (!dev)
   127			goto fail_alloc_dev;
   128	
   129		lp = netdev_priv(dev);
   130		lp->timeout = timeout;
   131		lp->backplane = backplane;
   132		lp->clockp = clockp;
   133		lp->clockm = clockm & 3;
   134		lp->hw.owner = THIS_MODULE;
   135	
   136		/* fill in our module parameters as defaults */
   137		dev->dev_addr[0] = node;
   138	
   139		p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
   140		p_dev->resource[0]->end = 16;
   141		p_dev->config_flags |= CONF_ENABLE_IRQ;
   142	
   143		info->dev = dev;
   144		p_dev->priv = info;
   145	
   146		ret = com20020_config(p_dev);
   147		if (ret)
   148			goto fail_config;
   149	
   150		return 0;
   151	
   152	fail_config:
 > 153		free_arcdev(dev);
   154	fail_alloc_dev:
   155		kfree(info);
   156	fail_alloc_info:
   157		return ret;
   158	} /* com20020_attach */
   159	

-- 
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https://01.org/lkp