Hi Florian, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: df3541670ca99b09f2f70d1733516ef7a2289b29 commit: 83abe3a3b85762720192809ac8695ff9255cfd23 [1345/1345] netfilter: nat: remove csum_recalc hook config: x86_64-buildonly-randconfig-004-20241224 (https://download.01.org/0day-ci/archive/20250303/202503032046.ehJfxCPP-lkp@i...) compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250303/202503032046.ehJfxCPP-lkp@i...) 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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202503032046.ehJfxCPP-lkp@intel.com/ All warnings (new ones prefixed by >>): net/netfilter/nf_nat_proto.c:56:6: warning: no previous prototype for function 'nf_nat_csum_recalc' [-Wmissing-prototypes] 56 | void nf_nat_csum_recalc(struct sk_buff *skb, | ^ net/netfilter/nf_nat_proto.c:56:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 56 | void nf_nat_csum_recalc(struct sk_buff *skb, | ^ | static 1 warning generated.
net/netfilter/nf_nat_proto.o: warning: objtool: missing symbol for section .text
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