Re: [PATCH] [v3] ieee802154: ca8210: Fix a potential UAF in ca8210_probe

[Stefan Schmidt]

Hello Dinghao,


On 01.10.23 09:19, kernel test robot wrote:
> Hi Dinghao,
>
> kernel test robot noticed the following build warnings:
>
> [auto build test WARNING on linus/master]
> [also build test WARNING on v6.6-rc3 next-20230929]
> [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/Dinghao-Liu/ieee802154-ca8210-Fix-a-potential-UAF-in-ca8210_probe/20231001-135130
> base:   linus/master
> patch link:    https://lore.kernel.org/r/20231001054949.14624-1-dinghao.liu%40zju.edu.cn
> patch subject: [PATCH] [v3] ieee802154: ca8210: Fix a potential UAF in ca8210_probe
> config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20231001/202310011548.qyQMuodI-lkp@xxxxxxxxx/config)
> compiler: m68k-linux-gcc (GCC) 13.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231001/202310011548.qyQMuodI-lkp@xxxxxxxxx/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@xxxxxxxxx>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202310011548.qyQMuodI-lkp@xxxxxxxxx/
>
> All warnings (new ones prefixed by >>):
>
>     drivers/net/ieee802154/ca8210.c: In function 'ca8210_register_ext_clock':
> > > drivers/net/ieee802154/ca8210.c:2743:13: warning: unused variable 'ret' [-Wunused-variable]
>      2743 |         int ret = 0;
>           |             ^~~

Please take care of this now unused variable after your re-factor.
With this fixed and send out as v4 I am happy to get this applied to the 
wpan tree.

regards
Stefan Schmidt