linux-kernel - Re: Re: [PATCH -next] scsi: core: fix double free in raid_component

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Message-ID: <202308230741.jbMc6KYG-lkp@intel.com>
Date:   Wed, 23 Aug 2023 07:53:09 +0800
From:   kernel test robot <lkp@...el.com>
To:     Bart Van Assche <bvanassche@....org>,
        Zhu Wang <wangzhu9@...wei.com>, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, dan.carpenter@...aro.org,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     oe-kbuild-all@...ts.linux.dev
Subject: Re: Re: [PATCH -next] scsi: core: fix double free in
 raid_component_add()

Hi Bart,

kernel test robot noticed the following build warnings:

[auto build test WARNING on mkp-scsi/for-next]
[cannot apply to next-20230821 jejb-scsi/for-next linus/master v6.5-rc7 next-20230822]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Bart-Van-Assche/Re-PATCH-next-scsi-core-fix-double-free-in-raid_component_add/20230822-035432
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next
patch link:    https://lore.kernel.org/r/baecaad7-7124-b9ae-ab79-1b7c6fa95c98%40acm.org
patch subject: Re: [PATCH -next] scsi: core: fix double free in raid_component_add()
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20230823/202308230741.jbMc6KYG-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20230823/202308230741.jbMc6KYG-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308230741.jbMc6KYG-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/scsi/raid_class.c:212:13: warning: 'raid_component_release' defined but not used [-Wunused-function]
     212 | static void raid_component_release(struct device *dev)
         |             ^~~~~~~~~~~~~~~~~~~~~~


vim +/raid_component_release +212 drivers/scsi/raid_class.c

b1081ea6f000de James Bottomley 2005-11-06  211  
ee959b00c335d7 Tony Jones      2008-02-22 @212  static void raid_component_release(struct device *dev)
b1081ea6f000de James Bottomley 2005-11-06  213  {
ee959b00c335d7 Tony Jones      2008-02-22  214  	struct raid_component *rc =
ee959b00c335d7 Tony Jones      2008-02-22  215  		container_of(dev, struct raid_component, dev);
ee959b00c335d7 Tony Jones      2008-02-22  216  	dev_printk(KERN_ERR, rc->dev.parent, "COMPONENT RELEASE\n");
ee959b00c335d7 Tony Jones      2008-02-22  217  	put_device(rc->dev.parent);
b1081ea6f000de James Bottomley 2005-11-06  218  	kfree(rc);
b1081ea6f000de James Bottomley 2005-11-06  219  }
61a7afa2c476a3 James Bottomley 2005-08-16  220  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki