Hi Peter, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 773f731853f1368508a0b112047bd9b5a4bb9a5e commit: 1f7b24152a85bec4ea4f5a6219b4702853ffd3e6 [1345/1345] mm/memory: Move mmu_gather and TLB invalidation code into its own file config: x86_64-buildonly-randconfig-001-20241224 (https://download.01.org/0day-ci/archive/20241229/202412290049.0DgodFXr-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/20241229/202412290049.0DgodFXr-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/202412290049.0DgodFXr-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from mm/mmu_gather.c:6: include/linux/pagemap.h:401:21: warning: cast from 'int (*)(struct file *, struct page *)' to 'filler_t *' (aka 'int (*)(void *, struct page *)') converts to incompatible function type [-Wcast-function-type-strict] 401 | filler_t *filler = (filler_t *)mapping->a_ops->readpage; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning generated.

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mm/.tmp_mmu_gather.o: warning: objtool: missing symbol for section .text

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