Subject: Re: [PATCH net-ipsec v2] xfrm: replay: Fix ESN wrap around for GSO

From: kernel test robot <[email-masked]>
Date: Thu, 29 Sep 2022 05:28:58 +0800

Hi Christian,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on klassert-ipsec/master]
[also build test ERROR on net-next/master net/master linus/master v6.0-rc7 next-20220927]
[cannot apply to klassert-ipsec-next/master]
[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/Christian-Langrock/xfrm-replay-Fix-ESN-wrap-around-for-GSO/20220927-210053
base:   https://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec.git master
config: i386-randconfig-a013
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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/bb1661466e741ea02b82c9d57c6cee6cee07ba7e
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Christian-Langrock/xfrm-replay-Fix-ESN-wrap-around-for-GSO/20220927-210053
        git checkout bb1661466e741ea02b82c9d57c6cee6cee07ba7e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash net/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email-masked]>

All errors (new ones prefixed by >>):

>> net/xfrm/xfrm_replay.c:773:6: error: conflicting types for 'xfrm_replay_overflow_check'
   bool xfrm_replay_overflow_check(struct xfrm_state *x, struct sk_buff *skb)
        ^
   include/net/xfrm.h:1752:5: note: previous declaration is here
   int xfrm_replay_overflow_check(struct xfrm_state *x, struct sk_buff *skb);
       ^
   1 error generated.

vim +/xfrm_replay_overflow_check +773 net/xfrm/xfrm_replay.c

   772	
 > 773	bool xfrm_replay_overflow_check(struct xfrm_state *x, struct sk_buff *skb)
   774	{
   775		if (x->repl_mode == XFRM_REPLAY_MODE_ESN)
   776			return xfrm_replay_overflow_check_offload_esn(x, skb);
   777	
   778		return false;
   779	}
   780	

-- 
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https://01.org/lkp