Re: [PATCH] cifs: fix UAF read of server->hostname in cifs_get_spnego_key()

[kernel test robot]

Hi Henry,

kernel test robot noticed the following build warnings:

[auto build test WARNING on manguebit/cifs-next]
[also build test WARNING on manguebit/cifs-fixes linus/master v7.3 next-20261027]
[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/Henry-Martin/cifs-fix-UAF-read-of-server-hostname-in-cifs_get_spnego_key/20261027-230438
base:   https://git.manguebit.org/linux.git cifs-next
patch link:    https://lore.kernel.org/r/20261027150438.943354-1-bsdhenrymartin%40gmail.com
patch subject: [PATCH] cifs: fix UAF read of server->hostname in cifs_get_spnego_key()
config: arm-allyesconfig (https://download.01.org/0day-ci/archive/20261029/202610290208.vMXHYOZa-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 16.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261029/202610290208.vMXHYOZa-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/202610290208.vMXHYOZa-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   fs/smb/client/cifs_spnego.c: In function 'cifs_get_spnego_key':
>> fs/smb/client/cifs_spnego.c:199:1: warning: the frame size of 1304 bytes is larger than 1280 bytes [-Wframe-larger-than=]
     199 | }
         | ^


vim +199 fs/smb/client/cifs_spnego.c

f1d662a7d5e532 fs/cifs/cifs_spnego.c Steve French  2007-11-05  195  
f1d662a7d5e532 fs/cifs/cifs_spnego.c Steve French  2007-11-05  196  out:
f1d662a7d5e532 fs/cifs/cifs_spnego.c Steve French  2007-11-05  197  	kfree(description);
f1d662a7d5e532 fs/cifs/cifs_spnego.c Steve French  2007-11-05  198  	return spnego_key;
f1d662a7d5e532 fs/cifs/cifs_spnego.c Steve French  2007-11-05 @199  }
b74cb9a80268be fs/cifs/cifs_spnego.c Sachin Prabhu 2016-05-17  200  

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