linux-kernel - Re: [PATCH 2/2] drivers: nfc: nfcmrvl: fix double free bug in nfc_fw_download

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Message-ID: <202204130040.8kwehlO8-lkp@intel.com>
Date:   Wed, 13 Apr 2022 01:00:13 +0800
From:   kernel test robot <lkp@...el.com>
To:     Duoming Zhou <duoming@....edu.cn>, krzk@...nel.org,
        linux-kernel@...r.kernel.org
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org, davem@...emloft.net,
        gregkh@...uxfoundation.org, alexander.deucher@....com,
        broonie@...nel.org, akpm@...ux-foundation.org,
        netdev@...r.kernel.org, pabeni@...hat.com,
        Duoming Zhou <duoming@....edu.cn>
Subject: Re: [PATCH 2/2] drivers: nfc: nfcmrvl: fix double free bug in
 nfc_fw_download_done()

Hi Duoming,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net-next/master]
[also build test ERROR on net/master linus/master linux/master v5.18-rc2 next-20220412]
[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/intel-lab-lkp/linux/commits/Duoming-Zhou/Fix-double-free-bugs-in-nfcmrvl-module/20220412-203028
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git b66bfc131c69bd9a5ed3ae90be4cf47ec46c1526
config: i386-randconfig-a004-20220411 (https://download.01.org/0day-ci/archive/20220413/202204130040.8kwehlO8-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project fe2478d44e4f7f191c43fef629ac7a23d0251e72)
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://github.com/intel-lab-lkp/linux/commit/1f4dba76cb2e854d8ae29781d066257f58b33dee
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Duoming-Zhou/Fix-double-free-bugs-in-nfcmrvl-module/20220412-203028
        git checkout 1f4dba76cb2e854d8ae29781d066257f58b33dee
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

>> drivers/nfc/nfcmrvl/fw_dnld.c:120:6: error: use of undeclared identifier 'dev'
           if (dev->fw_download_in_progress)
               ^
   1 error generated.


vim +/dev +120 drivers/nfc/nfcmrvl/fw_dnld.c

    92	
    93	static void fw_dnld_over(struct nfcmrvl_private *priv, u32 error)
    94	{
    95		spin_lock_irq(&priv->fw_dnld.lock);
    96		if (priv->fw_dnld.fw) {
    97			release_firmware(priv->fw_dnld.fw);
    98			priv->fw_dnld.fw = NULL;
    99			priv->fw_dnld.header = NULL;
   100			priv->fw_dnld.binary_config = NULL;
   101		}
   102		spin_unlock_irq(&priv->fw_dnld.lock);
   103	
   104		atomic_set(&priv->ndev->cmd_cnt, 0);
   105	
   106		if (timer_pending(&priv->ndev->cmd_timer))
   107			del_timer_sync(&priv->ndev->cmd_timer);
   108	
   109		if (timer_pending(&priv->fw_dnld.timer))
   110			del_timer_sync(&priv->fw_dnld.timer);
   111	
   112		nfc_info(priv->dev, "FW loading over (%d)]\n", error);
   113	
   114		if (error != 0) {
   115			/* failed, halt the chip to avoid power consumption */
   116			nfcmrvl_chip_halt(priv);
   117		}
   118	
   119		spin_lock_irq(&priv->fw_dnld.lock);
 > 120		if (dev->fw_download_in_progress)
   121			nfc_fw_download_done(priv->ndev->nfc_dev, priv->fw_dnld.name, error);
   122		spin_unlock_irq(&priv->fw_dnld.lock);
   123	}
   124	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp